China Factory G654 Granite Tiles with Good Price

What the Code "G654" Does and Does Not Tell You

G654 is not a grade, and it is not the name of a quarry. It is a Chinese trade code. Under GB/T 17670 Unified Numbering of Natural Stone, the letter G stands for granite, and the modern four-digit format pairs a province code from GB/T 2260 with a variety serial number — Fujian is 35, which is why G603 is also written as G3503. The three-digit "6xx" codes are the older Fujian trade numbering that the industry never abandoned, which is why G654 still appears on quotations, packing lists and customs documents decades after the standard moved on.

Commercially, that matters because G654 describes a colour family — fine-grained dark grey with evenly distributed light grey specks — and not a single quarry face. Published supplier documentation places G654 across several Fujian locations: Changtai and Zhangzhou in the south, plus Zhangpu, Pingnan and Changle. At least one exporter openly sells a "New G654" from a different face, presented as matching the original in colour and density, after the original Changtai quarry stopped producing. Two containers both invoiced as G654 can therefore differ in background tone, speck density, and how grey or how black they read in daylight — and the difference is obvious once the two are laid side by side.

G654 is also sold under a long list of aliases: Padang Dark, Sesame Black, Sesame Black of China, Changle Pingnan Sesame Black, Charcoal Black, China Impala. None of those names identifies a specific lot. What protects you is documentation:

• Ask for the block number and bundle photographs before the container is closed, and keep them on file.
• Approve a physical sample cut from the actual production lot, not a stock photograph and not a showroom "reference" piece that may be years old.
• Write into the purchase order that the approved sample is the colour reference for the whole shipment, and state the consequence if the goods fall outside it — rejection of the affected bundles, a price adjustment, or replacement.
• If a project runs in phases, order both phases from one block lot where you can. Matching a second lot later is the single most common source of complaints on grey granites.

Physical Data for G654 — and Why Published Numbers Disagree

Search for G654 technical data and you will find density quoted between 2.63 and 2.80 g/cm³ (some listings say 2.97), water absorption between 0.01% and 0.36%, compressive strength between roughly 60 and 220 MPa, and flexural strength between roughly 15 and 26.6 MPa. The spread is not a typo or a rounding difference. It comes from three things: G654 is supplied from more than one quarry face; a test value belongs to the sample that was tested, not to the trade name; and laboratories work to different methods (ASTM C97, C170 and C880 in the United States, the GB/T 9966 series in China).

Ranges compiled from Chinese producer datasheets, StoneContact and supplier listings for G654 / Padang Dark / Sesame Black, 2025–2026. Values are indicative; ask for a batch report against the lot you are buying.

The honest position: a supplier who quotes one fixed number for all G654 is quoting a datasheet, not your stone. Where performance actually matters — exterior paving, ventilated cladding, a freeze-thaw climate — ask for batch test reports covering water absorption and bulk density (ASTM C97 or GB/T 9966.3), compressive strength (ASTM C170), flexural strength (ASTM C880 or EN 12372) and, in cold climates, frost resistance tested on the stone you are buying. The cost of the test is trivial next to the cost of replacing paving after two winters.

Why G654 Became the Default Dark Paving and Cladding Stone

The main reason is the finish, not the stone. G654 is almost always supplied flamed for exterior work: an oxygen-propane flame is passed over the surface, the surface crystals fracture, and the result is a permanent micro-texture that is part of the stone rather than a coating that wears away. Merchants selling flamed G654 paving publish DIN 51130 slip ratings of R12 — one supplier's technical guide lists R11 for flamed and R12 for bush-hammered — and a friction coefficient above 0.60 under ASTM C1028. Pair a permanently textured surface with a dark, low-absorption, fine-grained stone that shows almost no veining, and you get a material that reads uniformly across a 2,000 m² plaza. That is precisely what a public-realm specifier needs.

G654 also does not depend on dye. That matters more than it sounds. A dyed black granite fades back toward its true colour with nothing more than water and a mild cleaner, and the fade appears as blotches across a floor or facade rather than as an even change. G654's colour is mineral, so it holds under UV. Any dark granite you are offered can be checked: wipe it with a clean white rag and acetone, then with MEK. Colour transfer on the rag means the stone has been doctored.

Two caveats belong in the specification. First, a flamed surface is rougher and more open than a honed one, so it traps dust, exhaust and leaf litter, and in shaded or perpetually damp areas it will grow algae or moss — the R12 rating applies to clean stone, not to stone carrying a biofilm. For paving under trees or on a north-facing slope, plan on periodic cleaning, and consider flamed-and-brushed rather than flamed alone. Second, flamed is the wrong answer indoors: for interior floors, stair treads and wall cladding, honed or polished G654 reads considerably more refined and is easier to maintain.

What Actually Drives the Price of a "Good Price" G654 Tile

Published 2026 trade indications put flamed G654 2cm slabs at roughly US$32–38/m² FOB, with G654 paving, kerb and cube stone listings from Fujian quoted at roughly US$32–60/m² FOB against a 400 m² minimum. Treat those as planning ranges only. FOB moves with thickness, grade and volume, so read any quote you receive against the drivers below rather than against a number in a blog post.

• Block supply and licensing. Environmental enforcement in Fujian has interrupted G654 supply before — the original Changtai face stopped producing around 2017 — and 2026 market reporting describes tighter mining-licence approvals, fewer compliant G654/G682 mines and raw block prices up 12–15%, with G654 blocks quoted at 1,200–1,800 RMB/m³ and A-grade material 20–30% above that.
• Yield. Normal block-to-slab outturn is around 68%. A strict "no variegation, no cracks" order can fall to 55%, which raises unit cost by 12–18% because you pay for the whole block and discard more of it.
• Grade. A-grade boards with no colour variation, no cracks and no yellow skin carry a 15–20% premium over B-grade. Export-order specification adds roughly 10%.
• Thickness. Above 20mm, each additional 2mm adds roughly 9–12 RMB/m² ex-works. A 30mm tile is not a 20mm tile with more stone in it — it is a different line item.
• Finish and tolerance. Fine flamed costs more than ordinary flamed; bush-hammered plus flamed adds a few RMB/m²; calibrated ±1mm tolerance adds 2–3 RMB/m²; chamfered and profiled edges are priced per linear metre.
• Volume and timing. Lots of 500–1,000 m² typically earn 5–10% off and orders above 2,000 m² 10–20%. March to May and September to October are firm; January to February and July to August are softer.

The practical rule: when one G654 quote sits far below the others, ask which of those six items is being traded away. The usual answers are B-grade with visible shade variation across the order, nominal thickness that arrives 1–2mm under, or no batch test report at all.

Where to read next

• G654 Granite / Padang Dark — full product range and G654 dark grey granite slabs
• G654 paving bricks and stone tiles and G654 kerbstone for exterior specifications
• Natural stone paving guide — thickness, sub-base and finish selection
• Stone finishes compared — how flamed, honed, polished and bush-hammered behave in service
• Stone defects and quality inspection — what to check before the balance payment