Black Galaxy is the most recognisable black granite in the world and, for two decades, the single most exported stone out of southern India. A dense jet-black ground carries a scatter of bronze-gold flecks that catch light like a night sky, which is where the name comes from. Polished 2 cm Black Galaxy slabs trade at roughly 35 to 70 dollars per square foot ex-warehouse in Western markets, based on our market estimates (August 2026).
That range is wider than a uniform black like Absolute Black because Black Galaxy is graded on the density and size of the gold flecks and on the purity of the black between them. A slab with sparse, small flecks and a slightly grey background sits at the bottom of the band; a slab with dense, evenly distributed medium-sized bronze flakes on a deep black field sits at the top. This guide breaks down the grades, the quarry supply picture in Andhra Pradesh, what fabrication and installation add, and how factory-direct sourcing changes the number.
What Black Galaxy Granite Is: Geology and Appearance
Geologically, Black Galaxy is not a true granite but a gabbro — an intrusive igneous rock made mostly of plagioclase feldspar and pyroxene, with the golden flecks being crystals of bronzite, an iron-magnesium silicate. It is dense, non-porous compared with most stone, reads around 6 to 7 on the Mohs scale, and does not react with household acids.
Visually, what sets it apart from every other black stone is the metallic fleck. Under direct light the bronzite catches and throws back a coppery gold; in flat light the slab reads as a deep speckled black. The flecks are typically 1 to 5 millimetres across and their density varies block to block, which is the whole basis of the grading system.
Quarries and Supply: Andhra Pradesh and Beyond
Every genuine Black Galaxy block comes from a tight cluster of quarries around Chimakurthy in the Prakasam district of Andhra Pradesh, India. There is no second source. Dozens of quarry leases work the same deposit, and block quality varies significantly between them, which is why experienced importers buy from named quarries rather than from a generic Black Galaxy listing. The best-fleck blocks are a shrinking share of output, and premium lots increasingly go to buyers with standing contracts.
Processing splits three ways. Indian mills around Chimakurthy and Ongole cut slabs and cut-to-size for direct export. Chinese mills in Fujian import Indian blocks in volume, process them on modern gang saws and resin-and-polish lines, and re-export finished slabs and tiles worldwide — often at lower finished cost than the Indian mills themselves because of scale and automation. The block cost is the same for everyone; the difference in your invoice is processing, freight and margin.
Budget alternatives exist for buyers who want a black speckled look without paying Black Galaxy money. Chinese Shanxi Black is a uniform black without the gold fleck at a lower price point, and various Indian and Chinese speckled blacks are marketed as Galaxy lookalikes. None of them carry bronzite, so none of them give the same coppery light-catch. If the fleck matters to the design, there is no substitute; if a dark speckled surface at the lowest cost is the brief, the lookalikes are worth quoting.
Grades: Fleck Density, Fleck Size and Background
Black Galaxy is sold in three commercial grades, and the naming is fairly consistent across Indian and Chinese suppliers. Premium or first-choice slabs have dense, evenly distributed gold flecks of medium size on a pure black background with no grey haze and no cracks or veins. Standard or commercial grade has visibly sparser or more uneven flecks, occasional larger flakes, and sometimes a faint grey undertone. Third grade or B-grade has patchy fleck distribution, hairline veins, or repaired areas, and usually flows into flooring tile and monument stock.
Fleck size is a separate axis. Small-fleck material reads more like a uniform black with a shimmer; large-fleck material is more dramatic and more visibly speckled. They do not mix well on the same job. For any project larger than a single counter, insist that all slabs come from one block or at least one quarry lot, and select from photos or video of the actual bundle under raking light, since fleck density is easy to misjudge in a small sample tile.
Black Galaxy Granite Prices in 2026
Polished 2 cm Black Galaxy slabs run 35 to 70 dollars per square foot ex-warehouse in Western markets — market estimates (August 2026). The bottom of the range buys commercial-grade material with sparse or uneven flecks; the top buys premium first-choice slabs with dense, even bronzite on a deep black field. 3 cm slabs price roughly 30 to 45 percent above 2 cm because of block yield and freight weight. Honed and leathered finishes typically add 10 to 20 percent over polished, since they require additional passes and, for leathered, more careful handling.
Slab price is the start, not the end. In the US, fabrication and installation — templating, cutting, edge profiles, sink and cooktop cut-outs, seaming and fitting — typically adds 30 to 60 dollars per square foot on a standard kitchen, so installed Black Galaxy counters commonly land in the 65 to 130 dollars per square foot band as a typical US market figure. Cut-to-size pieces — vanity tops, 12x12 and 24x24 tiles, treads and risers, monument blanks — price per finished piece rather than per slab square foot, and for repetitive formats this usually works out well below slab-plus-fabrication.
Factory-direct sourcing is where the number changes materially. Because Indian and Chinese mills buy the same Chimakurthy blocks and process them at far lower labour cost, factory-direct quotes for Black Galaxy slabs and cut-to-size typically come in 30 to 60 percent below Western warehouse prices for equivalent grade. On a container — roughly 300 to 350 square metres of 2 cm slab — that is the largest single saving in the project. The catch is that you take on freight, duty, lead time and quality control yourself, or through a sourcing partner who does it for you.
Black Galaxy vs Absolute Black, Nero Marquina and Quartz
Absolute Black is the closest comparison and the most common alternative on a quote sheet. It is a uniform black with no pattern at 30 to 75 dollars per square foot (market estimates, August 2026), so the two overlap almost entirely on price. The choice is aesthetic: Absolute Black is a flat, matte-or-mirror plane; Black Galaxy has depth and sparkle. On very large uninterrupted surfaces Absolute Black shows every fingerprint and water spot; Black Galaxy hides them in the fleck.
Nero Marquina is the marble alternative — a jet-black calcite stone with sharp white veins from Markina, Spain, at 40 to 90 dollars per square foot (market estimates, August 2026). It is more dramatic and more expensive at the top, but it is a marble: it etches with acid, scratches more easily and needs sealing. Black Galaxy is the working surface; Nero Marquina is the statement surface. Engineered quartz in black-sparkle patterns typically prices in the 50 to 100 dollars per square foot installed range in the US and gives a uniform, repeatable look with no natural variation — a real advantage for multi-unit projects, a real loss for anyone who wants the stone to look like stone.
Where Black Galaxy Works Best
Kitchens are the core use. Black Galaxy is hard, dense, heat-tolerant and effectively stain-proof once sealed, and the fleck disguises the crumbs and water marks that make plain black counters exhausting to keep clean. It pairs with almost any cabinet colour, which is why it became a default in the 2000s. Vanity tops, bar tops and reception desks follow the same logic.
Outdoors it is one of the best-behaved stones available. It does not fade, does not absorb water enough to spall in freeze-thaw, and holds a polish through years of UV exposure — which is why it dominates the memorial and monument trade worldwide, alongside Absolute Black. In commercial work it is a workhorse for lobby floors, elevator surrounds and building cladding, though for exterior cladding a honed or flamed finish is normally specified for slip resistance and to reduce glare. Its one weakness is visual: a large polished Black Galaxy floor can feel heavy unless the rest of the palette is deliberately light.
Fabrication and Finishes
Black Galaxy is a fabricator-friendly granite: consistent hardness, no soft veins, and predictable behaviour on the bridge saw and CNC. It takes a mirror polish exceptionally well because the bronzite and feldspar polish at similar rates. Standard thicknesses are 2 cm and 3 cm; 2 cm with a mitred laminated edge gives a chunky look at lower material and freight cost.
The commercial finishes are polished, honed, leathered and flamed. Polished maximises the depth of the black and the sparkle of the fleck — the classic look. Honed is matte and grey-black, and it mutes the gold considerably; some buyers are disappointed by how much the fleck disappears, so see a honed sample first. Leathered keeps more of the fleck visible with a soft textured hand and has become popular for kitchen islands. Flamed is for exterior paving and steps only, where the rough texture provides grip.
Care and Sealing
Black Galaxy needs very little. It has low porosity, so a single application of a good penetrating sealer at installation is usually enough for years; a water-bead test once a year tells you when to re-apply. Clean with a pH-neutral stone cleaner or dish soap and water. Avoid abrasive powders, which dull the polish over time, and avoid leaving oily residues to sit, since oil is the one thing that can darken the black unevenly if the sealer has worn.
Chips on edges from heavy pans are the most common damage and are repairable with colour-matched epoxy by any competent fabricator. Scratches are rare in normal use because the stone is harder than steel cutlery. Unlike marble, it does not etch, so wine, lemon and vinegar are not a concern.
Sourcing Checklist for Buyers and Importers
Before committing, verify five things. First, grade and quarry: ask which quarry lot the blocks came from and for photos or video of the actual slabs under strong light, with slab numbers, and confirm all material for one visual area comes from one block. Second, fleck consistency: request a fleck density and size description in writing — dense medium, sparse fine, and so on — and reject any lot where the sample and the bundle photos disagree. Third, thickness and calibration: 2 cm nominal should measure 2 cm within tight tolerance, and cut-to-size tiles should be calibrated and chamfered to a stated standard.
Fourth, commercial terms: an ex-works price in India or China means nothing until you add freight, insurance, duty and inland delivery, so ask the mill to quote FOB or landed with a realistic freight estimate. A competent factory-direct partner will provide this without being pushed and will quote per square metre in metric, which you convert at 10.764 square feet per square metre. Fifth, crating and inspection: slabs must be crated on A-frames with foam separators, and you or a third-party inspector should sign off on the loaded container against the approved photos. Black Galaxy is a commodity stone with a transparent market; a buyer who does this homework should not be paying warehouse prices for volume.
Frequently asked questions
How much does Black Galaxy granite cost per square foot?
Polished 2 cm Black Galaxy slabs run roughly 35 to 70 dollars per square foot ex-warehouse in Western markets, based on market estimates (August 2026). Installed kitchen counters in the US typically land between 65 and 130 dollars per square foot once fabrication and fitting are added. Factory-direct from Indian or Chinese mills is typically 30 to 60 percent below the warehouse slab price for equivalent grade.
Where does Black Galaxy granite come from?
One place only: a cluster of quarries around Chimakurthy in the Prakasam district of Andhra Pradesh, southern India. Blocks are processed both locally and in Chinese mills, but there is no second deposit. Anything sold as Black Galaxy from another origin is a lookalike without the bronzite fleck.
Is Black Galaxy granite outdated?
It was overused in the 2000s and carries some of that association, but it remains one of the best-performing black stones available and is widely specified in commercial and memorial work. In residential design it works best with light cabinets and honed or leathered finishes rather than the high-gloss dark-on-dark look that dated it.
Black Galaxy or Absolute Black — which is better?
They overlap on price (35 to 70 versus 30 to 75 dollars per square foot, market estimates August 2026) and on performance. Black Galaxy hides fingerprints and water marks in its gold fleck; Absolute Black is a flat, pure black that shows them but gives a cleaner, more minimal surface. Choose on aesthetics, not durability.
Does Black Galaxy granite need to be sealed?
One application of a penetrating sealer at installation is normally sufficient for several years because the stone has low porosity. Test annually by dropping water on the surface; if it soaks in rather than beading, re-seal. It does not etch with acids, so it needs far less care than any marble.
Can I buy Black Galaxy granite factory-direct?
Yes. Indian mills near the quarries and Chinese mills in Fujian both export finished slabs and cut-to-size worldwide, typically 30 to 60 percent below Western warehouse prices. The trade-offs are container-scale minimums, six to ten weeks of lead time, and the need to manage grading and inspection yourself or through a sourcing partner.