G682 Granite (Sunset Gold)

What Is G682 Granite?

Granite G682 — a medium-grained golden-yellow Chinese granite with rust-coloured flecking — is quarried in Fujian Province and sold internationally as Sunset Gold, Rusty Yellow, Rustic Yellow, Golden Peach, Desert Gold, Ming Gold and Padang Yellow. In Chinese it is 黄锈石 — literally "yellow rust stone" — a name that describes the warm rust-coloured spots through the base colour rather than any defect. It also carries the newer four-digit code G3582.

The stone is valued for being one of the few genuinely warm-toned granites available at volume. Greys, blacks and whites dominate the granite market; a granite that reads golden-yellow without being obviously artificial is unusual, which is why G682 holds a distinct position in cladding, landscaping and countertop work.

That same iron content that produces the colour also produces the stone's defining risk. We cover it in detail below, because a supplier page that describes G682 as simply durable and low-maintenance is leaving out the part that determines whether the project looks right in five years.

The Colour Grade System

Before anything else, understand this: G682 is not one colour. Suppliers grade the material on a scale from deep yellow through to white, and the grade you buy determines both the appearance and the price.

Colour consistency within a grade is what separates good supply from poor supply. Two bundles of "Grade A G682" from different factories can differ enough to be visible when laid side by side, because what drives the colour is the iron oxide concentration in the specific quarry layer — and different factories draw from different benches. Material with consistent, well-developed rust spotting and no black speckling or blemishes is regarded as the better grade.

The practical consequences for a buyer:

• Name the grade in the purchase order. "G682" is not a specification; "G682 Grade A, deep yellow, consistent rust spotting" is.
• Approve the actual material, not a sample. Where colour consistency matters — a facade, a large paving contract, a countertop run — request bundle photographs in daylight, or dry-lay a sample area from production material.
• Expect price to track grade. A quotation that looks unusually low for G682 is usually Grade C material, or material from a different quarry, or both.

G682 Technical Specifications

Published test data for G682 clusters more tightly than for some Chinese granites, with two independent sets of figures broadly agreeing. The ranges below reflect that.

Two numbers worth understanding

The flexural strength is the low one. At around 11–12 MPa, G682 is the weakest of the Chinese granites we handle in bending. That does not make it unsuitable — most paving and cladding never approaches its limit — but it does mean thin formats deserve more thought than they would in a stronger stone. A 10 mm G682 tile on an uneven substrate is more vulnerable than the same tile in G654. Where the format is thin or the spanning condition is demanding, increase thickness rather than relying on the material's strength.

Water absorption above 0.35% is the number that drives the maintenance plan. More absorbed water means more opportunity for the iron in the stone to oxidise, and more freeze-thaw exposure in cold climates. G682 is not a high-absorption stone by the standards of natural stone generally, but relative to the grey granites it needs sealing more, and needs it more consistently.

The Rust Question

G682 is called 锈石 — rust stone — and this is not a marketing flourish. It is iron-rich, and iron oxidises. Industry sources identify G682 by name as one of the granites particularly prone to deep rust spotting, and this deserves to be understood before specification rather than discovered after installation.

How the rust happens

Three things are needed: iron, water and oxygen. Remove any one and the reaction stops.

Deep rust spots come from iron minerals naturally present in the stone. They develop when moisture reaches the iron and air is available — slow, but persistent. A second pathway is alkaline attack: cement-based bedding and pointing materials are alkaline, and in the presence of water, alkaline compounds can react with the stone's iron and accelerate staining. This is why wet-laid installations on cement are more rust-prone than dry-laid or dry indoor installations.

Surface rust spots come from something else entirely: fine iron residue left on the stone during quarrying, processing, transport and installation. It reacts with atmospheric moisture and oxygen. Some of the most common sources are mundane — steel wool used to clean the stone leaves iron fibres behind, and those fibres rust.

Aggravating factors include prolonged moisture (bathrooms, pool surrounds, damp or shaded exterior paving), and acidic cleaning products, which can attack the iron chemically.

What actually prevents it

• Six-sided sealing before installation. Applying a penetrating sealer to all faces — including the back and edges, not just the visible surface — blocks contact between the stone's iron and water and air. This is the single most effective measure, and it has to happen before the stone is laid, not after.
• Avoid high-alkaline cement. Where the specification allows it, use low-alkali bedding and pointing materials. On soft or high-absorption stones this matters more, and G682 sits at the higher end of absorption among the granites.
• Seal on a schedule. Typically every one to two years depending on exposure. A sealer is not permanent, and the interval shortens in wet or coastal conditions.
• Use pH-neutral cleaners. Acidic cleaners accelerate iron attack. Mild, stone-specific neutral cleaners cost little more and remove one of the aggravating factors entirely.
• Never use steel wool. Use polyester pads instead. The iron debris left by steel wool is a direct cause of surface rust spotting.

What to do if rust appears

Rust that has already developed can be treated, but the treatment matters. Do not use oxalic acid for direct cleaning. Oxalic acid reduces Fe³⁺ to Fe²⁺, which is unstable — it re-oxidises once water and oxygen are present again, so the rust returns and typically spreads along the path the solution ran. Use a purpose-made granite rust remover formulated with additives that stabilise the iron ions after the reaction, so the treated area stays clean for a sustained period. Surface spotting sometimes responds to grinding and re-polishing; deep spotting is slower and may need repeated applications.

After treatment, rinse thoroughly, allow to dry, and re-apply a sealer. Treating rust without re-sealing simply resets the clock. And note the formulation distinction: granite rust removers are acidic and will damage marble, whose chemistry is the opposite. Never interchange them.

The honest summary

G682 is a durable, attractive and economical granite that will perform well for decades in most applications — provided the iron is managed. In dry interior use the risk is low. In wet exterior use, and particularly on pool surrounds or in coastal or humid climates, the risk is real and the mitigation has to be designed in from the start: sealed on six sides before laying, on low-alkali bedding, cleaned with neutral products, resealed on schedule.

Used without those measures, G682 is one of the few granites that can visibly deteriorate in ways the buyer will notice. We would rather say so at the specification stage than have you find out on a completed facade.

G682 vs Other Yellow and Warm-Toned Granites

G682 is not the only yellow granite on the market, and the substitutes that appeared after the Fujian quarry closures are worth understanding.

G682 vs Giallo Fiorito and other imported yellows. Giallo Fiorito is a Brazilian granite with a similar warm yellow-pink palette and a more pronounced flowing pattern. It is generally more expensive and more variable slab to slab. G682 is the volume choice: more consistent, better priced, and available cut to size rather than only as slabs.

G682 vs newer Fujian substitutes. Since 2015 the Fujian quarry closures have constrained supply and pushed prices up, and substitute stones carrying similar trade names have entered the market. These may be geologically different material sold under a familiar name. If the specification calls for G682 specifically — for appearance or for its known performance — ask for the quarry of origin, and treat a large price difference as a question rather than an opportunity.

G682 vs the grey granites. The choice here is usually aesthetic rather than technical. If the constraint is maximum durability in a wet freeze-thaw environment, the grey granites have the advantage: lower absorption, higher flexural strength, lower iron content. If the design needs warm colour, G682 is the available option, and the specification should reflect its particular requirements.

Available Products and Formats

G682 Slabs

For buyers sourcing a sunset gold granite G682 slabs supply, the big slab formats run 240–300 cm × 120–200 cm in 18 mm, 20 mm and 30 mm thicknesses, with heavier material up to 60 mm available to order. Yellow granite G682 big slabs of this size are stocked in the common thicknesses and cut to order in the rest, and polished G682 yellow granite slabs are produced to a gloss above 90° in good production. Smaller slab formats are produced for fabrication into countertops and cut-to-size work. Polished is the standard finish for interior work; flamed and honed for exterior. Bundling for export follows the usual pattern of fumigated wooden bundles, with bundle photographs available before the container is sealed.

Because G682 is graded by colour, slab selection matters more than it would for a consistent grey. For a countertop run or a facade where several slabs will be seen together, request photographs of the specific bundle and, for critical work, book-matched or sequence-matched slabs from the same block.

G682 Tiles

Standard tile sizes include 305×305, 305×610, 400×400, 457×457, 600×600 and 800×800 mm, at thicknesses from 10 mm to 30 mm. Cut-to-size dominates in practice. Polished, honed and flamed finishes are all produced. Wall cladding is the most common tile application for G682, along with interior flooring.

G682 Countertops and Vanity Tops

G682 is used for kitchen countertops and bathroom vanity tops, particularly where a warm tone is wanted and a granite look is preferred over engineered quartz or marble. Because the material is quarried and fabricated in the same province, a natural granite G682 vanity top factory order can be produced to a buyer's own dimensions rather than assembled from stock components. Standard sizes follow the North American convention:

Countertops: 96″ × 25.5″ or 26″, 108″ × 25.5″ or 26″, in 1.25″ or 0.75″ thickness; peninsula formats at 36″ × 78″, 39″ × 78″ and 28″ × 78″; additional sizes including 96″ × 36″, 78″ × 36″, 78″ × 25″ and 96″ × 16″.

Vanity tops: 25″ × 19″ or 22″, 31″ × 19″ or 22″, 37″ × 19″ or 22″, 49″ × 19″ or 22″, 61″ × 19″ or 22″, single or double sink; also 24″ × 36″, 26″ × 36″ and 22″ × 34″.

Edge profiles available include eased (flat), bevelled, bullnose (half, full and laminated), ogee (including half, French and double), Dupont, radius and rounded. Thickness tolerances as tight as ±0.05 mm are offered on high-grade work, though ±1 mm is more typical for standard production; confirm the tolerance you need rather than assuming it.

Two specification notes for countertop work. First, because G682 is iron-bearing, seal it on all faces before installation — including the underside and the cut edges around the sink and hob openings, where moisture most often reaches the stone. Second, polished G682 has a gloss above 90° in good production, but the polished surface is what shows rust staining most clearly if it develops; a honed finish is a reasonable alternative for wet areas.

G682 Paving Stones and Setts

Flamed and bush-hammered G682 is a standard landscape paving material. G682 yellow rusty granite setts and cobblestones are produced in cube and rectangular formats — 10×10×10, 10×15×15 and similar — finished tumbled for a weathered look or flamed for grip, and available mesh-mounted on panels for faster laying. Larger paving slabs are cut to project dimensions, typically 30–60 mm thick. Standard tile and paver formats include 30×30, 30×60 and 60×60 cm at 2–4 cm thickness.

For carriageway and heavy-duty applications, granite setts are commonly specified to BS EN 1342:2012 as natural intrusive igneous rock, in formats such as 200×100×100 mm and 240×160×160 mm with cropped or sawn sides. Naming the standard in the specification makes it enforceable.

The rust consideration applies to paving as much as anywhere: exterior paving is exposed to rain and, on a cement bed, to alkaline conditions. Six-sided sealing before laying is the control that matters most.

G682 Kerbstones and Curbstones

Kerbstones and curbstone are a major application for G682 — the warm tone contrasts usefully against grey road surfaces, and the material takes a flamed finish well. For importers sourcing wholesale G682 rusty granite curbstone, sections are cut to national profile standards as well as to project drawings. Straight kerbs, radius kerbs, transitions and corner units are cut to national standards or to project drawings. UK, Finnish and German profile ranges are all produced, as are bespoke sections. Sections are typically 600–1000 mm long with face profiles from 100×250 mm to 150×250 mm and larger.

G682 Palisades and Landscape Edging

Palisades — the upright, tapered or square-section stone posts used for landscape edging, retaining borders and driveway definition — are cut from the same material, and G682 yellow granite palisade wholesale orders are supplied in container quantities, usually in natural-split, flamed or sawn finish. G682's warm colour is a good fit for garden and streetscape work, and it coordinates visually with G682 paving and setts within the same scheme. Square, rectangular and tapered sections are produced to drawing; sawn tops are available where the design calls for a crisp edge rather than a split face.

G682 Wall Cladding

Polished small slabs and tiles are used for exterior cladding, where the stone's warm tone provides an alternative to the dominant greys and whites. Finishes include polished, honed, flamed, sandblasted and split-face. For ventilated facade systems, thin formats should be assessed against G682's relatively low flexural strength — a mechanical fixing design that transfers load to the stone in bending deserves more caution here than it would in a stronger granite.

Surface Finishes

G682 is produced in an unusually wide finish range, which partly reflects its position as a landscape and cladding stone as well as a countertop material.

Polished — the deepest colour and highest reflectivity, with gloss above 90° in good production. Standard for countertops, vanity tops and interior flooring. The finish that shows rust staining most clearly, which is a point worth weighing for wet areas.

Flamed (thermal) — the standard exterior finish, giving grip and a matt surface. Reads lighter than polished, and is the usual choice for paving, kerbs, palisades and exterior cladding.

Honed — smooth matt, retaining colour depth without the mirror. Used for interior floors, stairs and wall cladding, and a sensible option for wet interior areas where a polished surface would show staining.

Bush-hammered and sandblasted — pronounced texture with high grip for steps, ramps and heavy pedestrian use; sandblasting gives a finer even matt.

Natural split, mushroom, chiselled, pineapple, rough-picked — the rustic finishes used for walling, palisades and landscape edges, where texture and grip matter more than dimensional precision.

Tumbled — softens edges and corners for a weathered appearance, mainly on small-format paving and setts. Tumbling increases the exposed surface area, which matters slightly more on a stone with G682's absorption profile.

Brushed and leathered — a textured finish with a slightly greater depth than honed, used mostly on countertops and interior work.

Applications

• Exterior wall cladding and facades — the most common architectural use, in polished, flamed or split finishes.
• Interior and exterior flooring — tiles and paving, flamed outdoors and honed or polished indoors.
• Landscaping — setts, cobbles, steps, edging and garden paving.
• Kerbstones and streetscape furniture — cut to national standards.
• Palisades and retaining edging — the upright landscape format.
• Kitchen countertops and bathroom vanity tops — usually polished, sealed on all faces.
• Pillars, columns and fence posts — solid and cladded sections.
• Coping and window sills — cut to size.
• Steps, treads and risers — interior and exterior.
• Monuments and memorials — less common than the greys, but produced; the warm tone is a deliberate design choice where it is used.
• Plinths and bases — a traditional use for the stone in masonry construction.

Sizes, Tolerances and Custom Fabrication

Calibration. Calibrated material has uniform thickness; uncalibrated does not. For paving laid to a tight joint this is close to essential, and it matters more for G682 than for a stronger stone because thickness variation combined with lower flexural strength increases the risk of point loading. Ask for the tolerance in millimetres.

Colour grading. As above, this is the G682-specific risk. Specify the grade, and require that material be graded and blended from consistent blocks.

Edge work. For countertops and vanities, the edge profile is a visible design element and a significant part of the cost. For kerbstones, the profile is the product. Confirm against a drawing rather than a description in both cases.

Packing and Container Loading

Packing. Standard export packing is fumigated, seaworthy wooden crates or bundles, with foam or plastic padding between pieces and plastic strapping reinforcing the crate. Cobblestones and setts are supplied in ton bags or crates; mesh-mounted paving is stacked on pallets within crates. Crate timber is typically 1.5–1.8 cm thick, with better factories using 2 cm.

Loading. At a bulk density of roughly 2.6–2.7 g/cm³, G682 is lighter than G684 basalt and G603 granite — modestly more area fits per container at the same thickness. Cut-to-size paving at 20–30 mm typically loads to the region of 300–500 m² per 20ft container for European and Middle Eastern destinations, less where North American overland weight limits bind. Kerbstones and palisades are dense in section and fill a container by weight well before volume, so they are quoted by piece or linear metre rather than by square metre.

Because loading determines the landed cost per square metre as much as the ex-works price does, every quotation includes a loading figure.

Supply and Availability

A buyer should know this before planning a project around G682.

Quarry closures in Fujian from 2015 onward reduced the available supply of G682 and pushed prices upward. The market responded in two ways: existing producers consolidated around the quarries still operating — Quanzhou material being generally regarded as the finest texture and lowest porosity — and substitute stones appeared, some carrying trade names close to or identical to G682.

The practical implications:

• Lead times can extend when quarry output is constrained, particularly for large volumes with a tight colour specification.
• Grade availability varies. Deep-yellow Grade A material is the most sought after and the first to run short. If your project requires it, book early.
• Confirm the quarry of origin on the purchase order, not just the code. A substitute stone may be perfectly serviceable, but it is not the material you specified, and it may not match previously supplied work on the same project.

Quality Control and Inspection

The checks that matter for G682, in order of how often they cause problems:

1. Colour grade and consistency. Bundle photographs in daylight, compared against the approved grade. For large contracts, a dry-lay of production material. This is the check most likely to prevent a claim.

2. Rust spot inspection at packing. Because surface rust can originate in processing and handling, examine the packed material for early staining before the container is sealed. Catching it in the factory is far cheaper than treating it on site.

3. Dimensional tolerance. Length, width, thickness and squareness against the stated figures, particularly for calibrated paving and for kerbstone profiles.

4. Surface and arris condition. Chipped edges, tool marks and inconsistent finish.

5. Test documentation. Where the project specifies a standard, obtain the test report for the production lot rather than a generic certificate for the material type.

We photograph and record bundles at packing, and third-party pre-shipment inspection can be arranged on request.

Pricing

G682 sits in the mid-to-economical tier of Chinese granites, though the Fujian supply constraints have narrowed the gap with imported alternatives. Published reference points give a sense of the range: standard paving has been quoted in the region of US$15–30/m² ex-works depending on format and finish, with countertop material commonly quoted at US$30–80/m²; hand-carved and specialty work is priced per piece.

The factors that move a real quotation most:

• Colour grade. Grade A deep yellow commands a premium over Grade C, and the gap widens when Grade A is short.
• Finish. Polished and honed add processing cost over sawn and flamed; carved work is priced largely by labour.
• Calibration and tolerance. Tight tolerance costs more.
• Format. Countertops and vanities are priced by the fabricated piece, not by the square metre, because edge work and cutouts dominate the cost.
• Order quantity and container fill. Quotations are normally against full-container quantities.
• Destination. Overland weight limits determine how much fits in the container, which changes the landed cost per square metre more than most buyers expect.
• Duty and tariff. Trade measures vary by destination and change over time. Confirm rates with a customs broker for the specific entry rather than relying on any published list, including this one.

Ordering Process and Lead Times

1. Specification. Confirm the stone code, colour grade, finish, thickness, tolerance and any profile drawing. For G682 the colour grade is the step most often omitted and the one most likely to cause a mismatch.
2. Samples. Physical samples are available and are particularly worth requesting for G682, given the grade range.
3. Quotation with loading plan. Price plus the container loading figure, so the landed cost is visible before commitment.
4. Pre-production approval. Bundle photographs, dry-lay for large paving contracts, or a prototype piece for custom profiles and countertop edges.
5. Production. Standard stock formats typically run in the region of 10–20 days; custom fabrication and large volumes take longer, and current quarry output can extend this.
6. Packing and inspection. Bundles photographed; third-party pre-shipment inspection available.
7. Shipping. Standard export terms include FOB Xiamen, CFR/CIF and EXW. Common payment terms are a deposit against production with the balance against a copy of the bill of lading, or a letter of credit at sight.
8. Documentation. Commercial invoice, packing list, bill of lading and certificate of origin, with fumigation documentation accompanying the packing. The HS code for granite worked stone is commonly 6802.93.

Frequently Asked Questions

Why is G682 called "rust stone"?

Because of the rust-coloured flecks through the golden-yellow base — the Chinese name 黄锈石 means "yellow rust stone". The name describes the appearance, not a defect. However, G682 is genuinely iron-rich (around 11% Fe₂O₃), and it is one of the granites most prone to actual rust staining if water and oxygen reach the iron in the stone.

Does G682 actually rust?

It can, under the right conditions. Three things are needed: iron, water and oxygen. Dry interior installations rarely develop problems. Wet exterior installations — especially on a cement bed, in humid or coastal climates, or around pools — can develop rust spotting. It is preventable with six-sided sealing before installation, low-alkali bedding, pH-neutral cleaners and resealing every one to two years.

What is the difference between Grade A and Grade C G682?

Grade A is deep yellow, Grade C is light yellow, and they are the same stone from different quarry layers with different iron oxide concentrations. Grade A is the more desirable colour and commands a higher price. Colour consistency within a grade depends on factory grading discipline, so specify the grade and require material graded from consistent blocks.

Is G682 good for countertops?

Yes, and it is widely used for both kitchen countertops and bathroom vanity tops. Two things to plan for: seal on all faces before installation — including the underside and the cut edges around sink and hob openings — and consider a honed rather than polished finish in wet areas, since polished surfaces show rust staining most clearly if it develops.

How do I remove rust from G682?

Use a purpose-made granite rust remover formulated with iron-stabilising additives, then rinse, dry and reseal. Do not use oxalic acid — it reduces Fe³⁺ to unstable Fe²⁺ which re-oxidises, so the rust returns and tends to spread along the path the solution ran. Never use steel wool on the stone; its iron debris causes the staining in the first place. Use polyester pads instead.

Where is G682 quarried?

Fujian Province, China — principally around Shijing and Zhangpu near Xiamen and Quanzhou. Shandong is an alternative source. Quanzhou material is generally regarded as the highest grade, with finer texture and lower porosity. Quarry closures in Fujian from 2015 onward have constrained supply and prompted substitute stones to enter the market under similar names.

Can G682 be used for exterior paving in freezing climates?

Yes, with attention to the detail. Its water absorption (0.37–0.40%) is higher than the grey granites, which means more freeze-thaw exposure, and its flexural strength is the lowest of the Chinese granites covered on this site. Correct installation — adequate drainage, appropriate bedding, movement joints, and six-sided sealing before laying — matters more here than it would with a lower-absorption stone.

What sizes does G682 come in?

Tiles at 305×305, 305×610, 400×400, 457×457, 600×600 and 800×800 mm at 10–30 mm thickness; big slabs at 240–300 cm × 120–200 cm in 18, 20 and 30 mm (up to 60 mm on request); standard North American countertop and vanity top formats; setts and cobbles in cube and rectangular sizes; and kerbstones and palisades cut to national standards or to project drawings.

What is the HS code for G682 granite products?

Worked granite monuments and building stone are commonly classified under HS heading 6802.93. Classification depends on the specific product form and finish, so confirm with a customs broker for your shipment rather than relying on a general figure.