Quartzite
Alexandrita
Brazil
Quartzite
Sandalus
Brazil
ASTM C616Food-Contact EligibleScratch ResistantHeat ResistantFrost ResistantExterior-GradeVerified Quartzite
Sandalus
Photo coming soon
HardnessVery Hard(7–8 Mohs)
SoftHard
Acid SensitivityLow Risk
SafeHigh Risk
Verify Before You Buy
Slab Yard Diagnostic Protocol
Quartzite is widely mislabeled in the trade — slabs sold as quartzite are sometimes dolomitic marble (e.g., Super White) or hybrid marble/quartzite layers (e.g., Fantasy Brown). Before you commit, run two quick tests from your Stone ID Kit to confirm the slab is genuine quartzite.
From your Stone ID Kit
Glass tileHCl dropper bottle (5–10%)Knife or steel scribeMagnifier
The full step-by-step protocol — including expected results and red flags — is included in your downloadable Buyer's Guide.
Stone TypeQuartzite
Geological NameQuartzite
OriginBrazil
ASTM SpecificationASTM C616
ClassificationDense Crystalline / Siliceous
Available FinishesPolished, Honed (Matte), Leathered, Brushed
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Resin Fill Present
Like most Brazilian quartzites, Sandalus may contain polyester resin fill to stabilize the stone. In areas with significant direct sunlight, the resin can gradually yellow over time. Ask your supplier about the type of resin used — UV-stable epoxy resin is less prone to yellowing than standard polyester resin.
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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 — $139.97Alternatives to Sandalus
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