Onyx
AntiEtch®
Aqua Onyx
Turkey / Pakistan
OnyxAntiEtch® Candidate
Blue Onyx (Lemurian)
Argentina / Madagascar
Blue Onyx (Lemurian)
Photo coming soon
HardnessMedium(3–4 Mohs)
SoftHard
Acid SensitivityHigh Risk — Will Etch
SafeHigh Risk
Stone TypeOnyx
Geological NameOnyx (calcium carbonate)
OriginArgentina / Madagascar
ASTM SpecificationC503 (grouped)
ClassificationCalcareous / Translucent
Available FinishesPolished, Honed (Matte)
AntiEtch® FinishesPolished, Honed (Matte) only
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Backlighting Compatible
Onyx is naturally translucent and can be backlit with LED panels for stunning visual effect. Popular for feature walls, bar fronts, countertops, and fireplace surrounds. Requires specialized installation with a light box behind the slab.
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Seam Staining Precaution
Blue Onyx (Lemurian) can absorb oils from fabrication adhesives, potentially causing darkening along seams and edges. Ask your fabricator to seal all cut edges with an impregnating sealer before applying adhesive, and to use a non-staining epoxy rated for natural stone. This simple precaution prevents most seam-staining issues.
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MORE® AntiEtch® Protection Available
Blue Onyx (Lemurian) is a calcareous stone susceptible to acid etching. AntiEtch® provides permanent protection against lemon, vinegar, and other common acids.
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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 — $139.97Premium Protection · MORE® AntiEtch®
Protect your Blue Onyx (Lemurian)
Blue Onyx (Lemurian) 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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