Floors
High mechanical strength for lobbies, halls, and high-traffic circulation areas.
The power of black. The brilliance of bronze.
A stone that asks no permission to assert itself.
Black Taurus is a biotite gneiss quarried in Jampruca, in the Rio Doce Valley of Minas Gerais, Brazil. Its banded structure was born from millions of years of metamorphic pressure: the deep black comes from biotite, while the incandescent copper and gold veins reveal oxidized feldspar intertwined with quartz.
Each slab is a unique gesture — organic, dense, dramatic. Specified by architects seeking material protagonism: a stone that dialogues with dark woods, brass, leather, and warm light, defining the room without competing with it.
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The deep black of biotite cut through by incandescent copper and gold veins — the chromatic vocabulary that millions of years of metamorphic pressure wrote.
High mechanical strength for lobbies, halls, and high-traffic circulation areas.
Countertops, panels, and claddings with visual weight — careful protagonism.
Absorption of 0.30% favors bathrooms, outdoor kitchens, and kitchens with proper sealing.
K coefficient = 0.96 — stable behavior on façades and patios.
Each Black Taurus slab carries a unique signature: no two veins repeat. A repertoire of applications in kitchens, outdoor kitchens, bathrooms, and façades where the material takes the lead role.
For use in presentations, moodboards, and renderings.
Biotite gneiss (metamorphic rock) with a compact, banded structure, from Jampruca / Nova Módica — Minas Gerais, Brazil. Tests performed according to ABNT NBR 15845 (applicable parts).
Mineralogical composition: quartz, orthoclase, plagioclase, and biotite. The biotite is responsible for the dark background; the oxidized feldspars are responsible for the copper- and gold-toned bands and veins. The banded metamorphic structure, characteristic of gneisses, gives each slab a unique — almost pictorial — movement.
The combination of porosity ~0.81% and absorption ~0.30% positions Black Taurus as a low-absorption material, favoring performance in wet areas with proper specification and maintenance: less tendency to absorb liquids, better response to sealers, and greater predictability in long-term use.
The results indicate excellent suitability for indoor and outdoor high-traffic floors, stairs, ramps, landings, and countertops with relevant spans. For structural applications, the final definition of thickness, supports, and reinforcements rests with the project's engineer, taking into account geometry, layout, and loads.
After freeze/thaw cycles, Black Taurus retains 96% of its natural strength — exceptional behavior, close to the intact material. The average impact rupture energy (~7 J) reinforces the importance of proper supports, setbacks, and well-dimensioned edges, especially on countertops and stair treads.
Validation of structural design and fastening by the engineer of record is always recommended, considering natural variations between batches and slabs.
Black Taurus is a granite (biotite gneiss): a natural stone of high hardness and very low porosity, highly scratch-resistant. Like all natural stone, it needs periodic sealing and a gentle cleaning routine to keep its shine for many years.
A soft microfiber cloth or non-abrasive sponge, warm water, and neutral detergent. Always dry after cleaning and wipe up spills right away.
Seal with a quality water-repellent, reapplied every 6 months to 2 years depending on use — the barrier that repels liquids and eases cleaning.
Heat-resistant, but thermal shock can cause micro-cracks. Always use trivets — never rest a hot pan directly on the stone.
Don't cut directly on the surface — it dulls both the shine and your knives. Use a cutting board and avoid dropping heavy objects.
After installation, wait about 24h before using the surface (curing of adhesives and sealants). Always check the instructions from your granite's manufacturer and the fabricator responsible for specific guidance.
Receive a physical sample, schedule a showroom visit, or speak with a Milgran specialist to clarify any technical questions about the material.
"Black Taurus is the kind of stone that walks into a project and sets the tone — everything else arranges itself around it."
— Milgran Curation