Kosmos is one of the dense, deep-grey quartzites in current Antolini production — a charcoal ground shot through with silver mica, ribboned with paler grey swirls and the occasional rust passage where iron oxidized through the bed. Polished, it reads close to a hard-rock granite. The story changes completely with Antolini's Super Cleft Texture finish.
Super Cleft is not a sandblast and not a leather. It is closer to a controlled fracture: the surface is split along the stone's natural cleavage planes and left there. No diamond pads, no resin fill. What you see in the close-up below — the rough, broken-open rock face, the mica catching light at every angle, the rust ghosting through the grey — is the raw quartzite as it leaves the block. The hand reads it as rock, not as countertop.
“It is closer to a controlled fracture: the surface is split along the stone's natural cleavage planes and left there.”
This is the largest format Antolini produces this finish in: 129″ × 74″ jumbo, single slab. At that size the cleft texture starts behaving architecturally — the surface absorbs light the way a stacked-stone wall does, but with the visual continuity of a single piece. No grout joints, no veneer reads. One face, one stone, the full elevation.
The installed reference pictured below is from a Westside primary living room currently in finish — a freestanding double-sided fireplace mass clad floor-to-ceiling in Kosmos Super Cleft, sitting on a honed black soapstone hearth and base, with the firebox glazed full-height in clear glass on three sides. The two angles show the same mass: one looking at the front elevation through the firebox, the other reading the corner return and the side face. Note how the Super Cleft texture works across both planes — light catches the mica differently on the side that faces the windows than on the side that faces the room, and the wrapped corner reads as a single broken-rock monolith rather than two clad faces meeting.
On the floor at 2303 South Sepulveda. This is one of those slabs that has to be walked — photographs flatten the texture, and the difference between Super Cleft in yard daylight and Super Cleft on a finished fireplace mass is most of the specification decision. Designers and architects working in Los Angeles, Beverly Hills, Bel Air, Pacific Palisades, and Malibu — call and we'll pull it for you.
Tagged
In place
The stone, installed.
Reference photography of this slab — or stone from the same selection — finished and at home in completed work.
Westside primary living room — front elevation, glass firebox on honed black soapstone hearth. 
Same mass, corner return — the wrap reads as one broken-rock monolith.
