Black Galaxy Granite for Flooring in House and Office

Synonyms: Black Ametist, Black Ametista, Black Amethyst, Black Amethysta, Black and Gold, Black Galaxi, Black Galaxy Granite, Black Gold Sands, GA 902, Galaxi Black, Galaxy Black, Galaxy Gold, Galaxy Star, Nero Ametista, Nero Galassia, Nero Galaxy, Nero Star Galaxi, Nero Star Galaxy, Star Galaxi, Star Galaxy Black, Star Galaxy Granite, Star Gallaxy, WG203

Description: A fine to medium-grained, black gabbro of the Precambrian period with golden-yellow sparkling broncite scales. This stone internationally may be nominated as a granite however in the area of application of the European Standard (EN) this stone must be nominated as gabbro.

Gabbro: A dark-coloured, coarse-grained intrusive igneous rock. Gabbro is very similar to basalt in its mineral make up. It is composed mostly of the mineral plagioclase feldspar with smaller amounts of pyroxene and olivine.

NOTE: For large projects it is essential to source the Black Galaxy from the same quarry supply since mixing background colours will be very noticeable.

Technical Information For Indian Black Galaxy Granite

Description: This material can have a dark black background, a dark black/green tinge or black with grey/white pinhead sized spotting. All will have golden specks in them however there are two distinct types: small/medium flake and large flake. There are many different quarries of Black Galaxy granite, the background colour and flecking can vary considerably. For large projects ensure that the blocks are all extracted from the same quarry face for matching purposes.

First Choice material will have no white lines or veins. Expect to pay a much higher price for large gangsaw-sized slabs. Lower cost Black Galaxy may have black or white lines or clouds however First Choice small blocks suitable for tiles and smaller-sized slab production are usually readily available. Low cost Black Galaxy retail tiles are usually of Commercial Quality material, only when placing First Choice alongside Commercial Quality would the layman tell the difference.

General Usage: It is mainly used for flooring, cladding, kitchen counters and table tops. It looks best when it is glossy but is also suitable for flamed (thermal), honed, river-washed, leather and brushed finishes. Available in both slabs and tiles.

Quarrying Area: Cheemakurti, Bodawada, Prakasam District, Andhra Pradesh, Southern India

Technical Specification

1. Compressive Strength: 2777 Kg/cm2
2. Comp. Strength after Gelivity: 2696 Kg/cm2
3. Ultimate Tensile Strength: 274 Kg/cm2
4. Coeff. Thermal expansion: 0.0045mm/mc
5. Water Absorption: 0.04%
6. Impact Test-Min Fall Height: 68 cm
7. Specific Gravity: 2.960 Kg/m3
8. Hardness (Moh's Scale): 6.5