Soapstone
African Soapstone
Zimbabwe / Uganda
Soapstone
Black Soapstone
Brazil / India
Industry-TestedFood-Contact EligibleEtch ResistantFrost ResistantSofter Surface
Black Soapstone
Photo coming soon
HardnessSoft(1–2 Mohs)
SoftHard
Acid SensitivityAcid Safe
SafeHigh Risk
Verify Before You Buy
Slab Yard Diagnostic Protocol
Run a quick verification with your Stone ID Kit to confirm the slab matches its label. The two-test routine (scratch + acid) catches most identification errors in the trade.
From your Stone ID Kit
Glass tileHCl dropper bottle (5–10%)
The full step-by-step protocol — including expected results and red flags — is included in your downloadable Buyer's Guide.
Stone TypeSoapstone
Geological NameSoapstone
OriginBrazil / India
ClassificationSoapstone (unique group)
Available FinishesHoned (Matte), Leathered
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Natural Patina Development
Soapstone naturally darkens over time with use and exposure to oils. You can accelerate this with mineral oil for a uniform dark appearance, or let it develop naturally for a varied patina. This is a feature, not a defect.
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Naturally Non-Porous
Soapstone does not need sealing — it is naturally non-porous and resistant to staining. This makes it an excellent low-maintenance option for kitchens and laboratories.
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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 — $139.97HardnessSoft(1–2 Mohs)
SoftHard
Acid SensitivityAcid Safe
SafeHigh Risk
NONE — acid-proof; never etches
🔥Heat Tolerance
~400°F
💧Sealer
Mineral oil (not sealant)
Technical Details
Mohs Hardness1–2
Absorption0.02–0.50%
Density (pcf)165–175
Compressive Strength (psi)5,000–12,000
Flexural Strength (psi)N/A
Abrasion Resistance (Ha)N/A
Thermal Tolerance~400°F
ClassificationSoapstone (unique group)
Geological NameSoapstone
OriginBrazil / India
Where can you use Black Soapstone?
Tap an application to see the full recommendation.
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Interior
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Exterior
Recommended Conditional Not Recommended
Care Instructions
Maintenance recommendations for Black Soapstone
🧹 Daily Cleaning
- Wipe surfaces with a soft, damp cloth or microfiber towel
- Use a pH-neutral stone cleaner — never use acidic or abrasive products
💧 Sealing Schedule
- Sealer type: Mineral oil (not sealant)
- Seal every 1–2 years for normal residential use
- Test with water drops — if absorption occurs within 10 minutes, it's time to reseal
- Always clean the surface thoroughly before applying sealer
- Allow sealer to cure fully before using the surface (typically 24 hours)
⚠️ Warning Signs — Time to Call a Pro
- Dull spots or rings where liquids have sat on the surface
- Visible cracks, chips, or separating seams
- Discoloration or staining that won't clean away
- Surface feels rough or gritty in areas that were previously smooth
- Grout deterioration around the stone edges
🛒 Recommended Products
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pH-Neutral Stone Cleaner
For daily cleaning. Avoid acidic or alkaline cleaners.
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Impregnating Sealer
Penetrates the stone to protect from within. Apply annually.
Need professional help?
Get a free consultation from Sureshine’s stone care experts.
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