Slate

Indian Black Slate

India

Indian Black Slate slate — polished slab surface showing Black coloring. Origin: India. Hardness: 2.5 Mohs. Acid sensitivity: medium.

Indian Black Slate

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HardnessMedium(2.5–4 Mohs)
SoftHard
Acid SensitivityModerate Risk
SafeHigh Risk
Stone TypeSlate
Geological NameSlate
OriginIndia
ASTM SpecificationASTM C629
ClassificationFoliated Metamorphic
Available FinishesHoned (Matte), Brushed
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Natural Cleft Surface

Slate can be left with its natural cleft (split) surface for a textured, organic look, or gauged/calibrated for a flatter profile. Natural cleft provides excellent slip resistance for exterior use.

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MB Stone I.D. Kit — Test Your Stone

Not sure what stone you have? This kit includes the tools professionals use to identify stone type, test acid sensitivity, check absorption, and determine the right care products.

Shop Stone I.D. Kit — $139.97