Marble
AntiEtch®
Afghan Black Gold
Afghanistan
MarbleAntiEtch® Candidate
Fossil Stone
Morocco (Erfoud)
Fossil Stone
Photo coming soon
HardnessMedium(3–5 Mohs)
SoftHard
Acid SensitivityHigh Risk — Will Etch
SafeHigh Risk
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True Geology: Limestone with fossils
Fossil Stone is commercially sold as marble, but is geologically a limestone with fossils. This affects its actual physical and chemical properties.
Stone TypeMarble
Geological NameLimestone with fossils (commercially marble)
OriginMorocco (Erfoud)
ASTM SpecificationASTM C503
ClassificationCalcareous — Consistent
Available FinishesPolished, Honed (Matte), Leathered, Brushed, Tumbled
AntiEtch® FinishesPolished, Honed (Matte) only
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True Geology: Limestone with fossils
Fossil Stone is commercially sold as marble, but it is geologically a limestone with fossils. This distinction matters because true geological classification determines the stone's actual physical and chemical properties — which affects how it performs, how it should be maintained, and how it reacts to acids and moisture.
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MORE® AntiEtch® Protection Available
Fossil Stone is a calcareous stone susceptible to acid etching. AntiEtch® provides permanent protection against lemon, vinegar, and other common acids.
Learn More🔬
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 — $139.97Premium Protection · MORE® AntiEtch®
Protect your Fossil Stone
Fossil Stone is a calcareous stone that etches from lemon juice, wine, and coffee. MORE® AntiEtch® stops it.
- Permanent acid-etch protection
- Invisible — keeps the natural finish
- Installed by certified pros
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