LimestoneAntiEtch® Candidate

Vratza

Bulgaria

ASTM C568Frost ResistantAcid SensitiveSealing RecommendedSofter Surface

Vratza

Photo coming soon

HardnessMedium(3–4 Mohs)

SoftHard

Acid SensitivityHigh Risk — Will Etch

SafeHigh Risk

Verify Before You Buy

Slab Yard Diagnostic Protocol

Limestone, travertine, and onyx are all calcite-based stones — they will react with acids and benefit from sealing. Your Stone ID Kit lets you confirm the chemistry and assess the slab's porosity before you commit.

From your Stone ID Kit

HCl dropper bottle (5–10%)Glass tileMagnifier

The full step-by-step protocol — including expected results and red flags — is included in your downloadable Buyer's Guide.

Stone TypeLimestone

Geological NameLimestone

OriginBulgaria

ASTM SpecificationASTM C568

ClassificationCalcareous / Sedimentary

Available FinishesPolished, Honed (Matte), Brushed, Tumbled

AntiEtch® FinishesPolished, Honed (Matte) only

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Seam Staining Precaution

Vratza 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

Vratza is a calcareous stone susceptible to acid etching. AntiEtch® provides permanent protection against lemon, vinegar, and other common acids.

Learn More

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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

Premium Protection · MORE® AntiEtch®