{"id":499969,"date":"2026-10-12T15:27:56","date_gmt":"2026-10-12T07:27:56","guid":{"rendered":"https:\/\/whitemarblegranite.com\/?post_type=products&p=499969"},"modified":"2026-10-13T21:18:49","modified_gmt":"2026-10-13T13:18:49","slug":"cosmic-black-granite-countertop","status":"publish","type":"products","link":"https:\/\/whitemarblegranite.com\/id\/product\/cosmic-black-granite-countertop\/","title":{"rendered":"Meja Granit Hitam Kosmik"},"content":{"rendered":"
\n
\n

Quick Summary<\/span><\/h2>\n

Cosmic Black Granite Countertop<\/strong> is fabricated from Brazilian Cosmic Black stone, recognized by a deep black background crossed by irregular white, silver, beige and occasional gold-toned mineral movement. Large slabs work particularly well for kitchen counters, islands, bars, fireplaces and interior feature surfaces where the sweeping pattern has enough area to develop. Polished finish gives the material its strongest contrast, while leathered and honed surfaces reduce reflection and change the way the lighter mineral bands are perceived.<\/span><\/p>\n<\/div>\n

\n
\n
\"Cosmic<\/span><\/p>\n

Large countertop surfaces allow the black field and lighter sweeping mineral bands to develop across the full worktop.<\/span><\/p>\n<\/div>\n

\n

Cosmic Black Granite Countertops for Villas, Residential Developments, Offices, and Commercial Interiors<\/span><\/h2>\n

Cosmic Black is visually different from uniform black granite. Its surface contains broad pale mineral concentrations, flowing bands and irregular darker zones rather than one consistent monochrome field.<\/span><\/p>\n

That movement becomes especially noticeable on long kitchen runs and large islands, where several feet of uninterrupted stone allow the pattern to read as one composition rather than a collection of small fragments.<\/span><\/p>\n

The dark base coordinates easily with timber, black or white cabinetry, brushed metal, bronze, warm neutral finishes and contemporary architectural interiors.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

Black Cosmic Granite, Cosmic Black Granite, and Geological Classification<\/span><\/h2>\n

Cosmic Black Granite<\/strong> and black cosmic granite<\/strong> are established commercial names for this Brazilian decorative stone. Related trade names may include Cosmos Black, Cosmic Black and other regional supplier variations.<\/span><\/p>\n

Although sold commercially as granite, specialist petrographic documentation classifies Cosmic Black as a foliated metamorphic rock \u2014 gneiss \u2014 under EN 12670. This distinction does not change the established commercial product name used for countertops and slabs.<\/span><\/p>\n

The heterogeneous structure explains why individual slabs can contain different concentrations of pale, yellowish, pinkish or darker minerals rather than repeating one fixed pattern.<\/span><\/p>\n\n\n\n
\"Cosmic<\/span><\/p>\n

Long kitchen worktops can use the stone’s broad mineral movement as part of the overall cabinet composition.<\/span><\/p>\n<\/td>\n

\"black<\/span><\/p>\n

Polishing strengthens the contrast between the dark matrix and lighter white, silver and warm-toned concentrations.<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Cosmic Black Granite Slab Sizes, Countertop Formats, Thicknesses, and Edge Options<\/span><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Product<\/strong><\/span><\/td>\nCosmic Black Granite Countertop<\/span><\/td>\n<\/tr>\n
Material<\/strong><\/span><\/td>\nBrazilian Cosmic Black natural stone \/ commercially traded as granite<\/span><\/td>\n<\/tr>\n
Petrographic Direction<\/strong><\/span><\/td>\nFoliated metamorphic rock \/ gneiss according to published EN 12670 technical classification<\/span><\/td>\n<\/tr>\n
Slab References<\/strong><\/span><\/td>\n2400mm up \u00d7 1200mm up \/ 2600mm up \u00d7 1400mm up; larger formats subject to block production<\/span><\/td>\n<\/tr>\n
Kitchen Top References<\/strong><\/span><\/td>\n25 1\/2\u2033\u00d796\u2033 \/ 26\u2033\u00d796\u2033 \/ 25 1\/2\u2033\u00d7108\u2033 \/ 26 1\/2\u2033\u00d7108\u2033 \/ 28\u2033\u00d796\u2033 \/ 28\u2033\u00d7108\u2033 and custom fabrication<\/span><\/td>\n<\/tr>\n
Island References<\/strong><\/span><\/td>\n98\u2033\u00d742\u2033 \/ 76\u2033\u00d742\u2033 \/ 76\u2033\u00d736\u2033 \/ 86\u2033\u00d742\u2033 \/ 96\u2033\u00d742\u2033 and drawing-based sizes<\/span><\/td>\n<\/tr>\n
Peninsula References<\/strong><\/span><\/td>\n36\u2033\u00d778\u2033 \/ 39\u2033\u00d778\u2033 \/ 28\u2033\u00d778\u2033 and custom dimensions<\/span><\/td>\n<\/tr>\n
Thickness<\/strong><\/span><\/td>\n20 \/ 30mm slabs; built-up or mitred edge profiles according to drawing<\/span><\/td>\n<\/tr>\n
Finish<\/strong><\/span><\/td>\nPolished \/ Leathered \/ Honed<\/span><\/td>\n<\/tr>\n
Edge Profiles<\/strong><\/span><\/td>\nEased \/ Beveled \/ Half Bullnose \/ Full Bullnose \/ Ogee \/ Mitred \/ Laminated profiles by drawing<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Cosmic Black Granite Technical Data for Countertop and Interior Project Specification<\/span><\/h2>\n

Published Cosmic Black technical testing provides the following material-specific reference values. These figures are appropriate for preliminary specification review but should not be represented as a current-batch Esta Stone laboratory certificate.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n
Property<\/strong><\/span><\/td>\nReference Value<\/strong><\/span><\/td>\nTest Standard<\/strong><\/span><\/td>\n<\/tr>\n
Hardness<\/span><\/td>\nMohs 6\u20137<\/span><\/td>\nPublished Cosmic Black technical reference<\/span><\/td>\n<\/tr>\n
Apparent Density<\/span><\/td>\n2738\u20132769 kg\/m\u00b3<\/span><\/td>\nEN 1936<\/span><\/td>\n<\/tr>\n
Porosity<\/span><\/td>\n0.46%<\/span><\/td>\nEN 1936<\/span><\/td>\n<\/tr>\n
Water Absorption<\/span><\/td>\n0.20%<\/span><\/td>\nEN 13755<\/span><\/td>\n<\/tr>\n
Flexural Strength<\/span><\/td>\n12.9 \u00b1 4.3 MPa<\/span><\/td>\nEN 12372<\/span><\/td>\n<\/tr>\n
Compressive Strength<\/span><\/td>\n144 MPa<\/span><\/td>\nEN 1926<\/span><\/td>\n<\/tr>\n
Wear Resistance<\/span><\/td>\n17.5mm<\/span><\/td>\nEN 14157<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Technical note:<\/strong> Cosmic Black is a heterogeneous natural stone and physical properties can vary between quarry blocks and production batches. The reference source also notes natural pores, veins, mineral concentrations and occasional microcracks as characteristics that may occur in the material. Where certified values are required, confirm the applicable current-batch report and project standard before approval.<\/span><\/p>\n

\n
\n
\"Cosmic<\/span><\/div>\n
\n

Granite Kitchen Countertop Fabrication for Islands, Sink Runs, and Custom Cabinet Layouts<\/span><\/h2>\n

A granite kitchen countertop<\/strong> in Cosmic Black works best when the slab composition is considered together with the cabinet plan. Long pale mineral bands can cross sink runs, islands and waterfall ends, making seam placement part of the finished visual result.<\/span><\/p>\n

Fabrication can include undermount or drop-in sink openings, cooktop cutouts, faucet holes, backsplashes, mitred waterfall ends and different edge profiles according to the approved shop drawing.<\/span><\/p>\n

Where a countertop contains large cutouts or narrow stone rails, reinforcement and cabinet support should be coordinated with the final geometry rather than assumed from slab thickness alone.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

Cosmic Black Granite Slab Layout for Kitchen Islands and Long Counter Runs<\/span><\/h2>\n

Cosmic Black is not a visually uniform material, so island design benefits from using a sufficiently large slab area to preserve the principal mineral movement. A small fragment cut from a dramatic slab can look very different from the slab as a whole.<\/span><\/p>\n

Long counters may require more than one piece. In that situation, seam position should respond to cabinet divisions, cutouts and the natural direction of the slab rather than being placed solely for maximum material yield.<\/span><\/p>\n

Waterfall ends can extend the stone pattern vertically, but the junction between horizontal and vertical pieces needs to be planned from the same slab sequence where continuity is important.<\/span><\/p>\n

Polished, Leathered, and Honed Cosmic Black Countertop Finishes<\/span><\/h2>\n

Polishing produces the deepest black field and strongest contrast between dark areas and white, silver or warm mineral concentrations. It is the most direct finish for kitchens where the stone itself is intended to become a focal surface.<\/span><\/p>\n

Leathered finish reduces mirror reflection and introduces a more tactile surface. The lighter mineral bands remain visible, but the overall appearance becomes less formal than a high polish.<\/span><\/p>\n

Honed finish creates a flatter, lower-sheen result and can suit contemporary interiors where cabinetry and architecture should remain visually stronger than the countertop reflection.<\/span><\/p>\n

Cosmic Black Granite Fireplace and Interior Feature Wall Applications<\/span><\/h2>\n

Cosmic Black Granite Fireplace<\/strong> surrounds can use the material’s broad pale mineral bands to frame the opening without relying on a separate decorative border. Large-format pieces are especially effective where the design calls for a continuous hearth and wall composition.<\/span><\/p>\n

The same material can be used for luxury countertops and feature walls<\/strong> in villas, residential developments, executive offices, boardrooms, reception areas, restaurants and other premium commercial interiors.<\/span><\/p>\n

Unlike small-format tiles, large wall pieces allow the heterogeneous mineral pattern to remain legible at architectural scale.<\/span><\/p>\n

Cosmic Black Granite Tiles for Interior Floors, Walls, and Stairs<\/span><\/h2>\n

Cosmic Black Granite Tiles<\/strong> can be fabricated for interior floors, walls, stairs and window sills where the project requires the same material beyond the countertop package.<\/span><\/p>\n

Because the slab has directional mineral concentrations, tile orientation becomes more noticeable in larger floor areas. Turning individual pieces without a layout strategy can interrupt the overall visual flow.<\/span><\/p>\n

For stair work, tread and riser dimensions, nosing profiles and surface finish should be coordinated with the construction drawings and indoor walking-surface requirements.<\/span><\/p>\n

Why Cosmic Black Should Be Specified Primarily for Interior Applications<\/span><\/h2>\n

A material-specific Cosmic Black technical sheet lists kitchen worktops, bathrooms, wall cladding, decorative interiors, fireplaces, interior flooring, indoor stairs and window sills as recommended applications.<\/span><\/p>\n

The same technical documentation marks the referenced Cosmic Black material as unsuitable for exterior applications and notes that excessive contact with water can lead to local discoloration or surface deterioration.<\/span><\/p>\n

For that reason, this page does not position Cosmic Black as a generic exterior paving or fa\u00e7ade granite. Projects proposing exterior use should obtain material-specific technical approval rather than relying on the commercial word \u201cgranite.\u201d<\/span><\/p>\n

Fabrication QC for Cosmic Black Countertops, Islands, Fireplaces, and Wall Panels<\/span><\/h2>\n