I don't know. It seems cork like. It does not scratch other surfaces and does not sweat. Great coaster

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Thirstystone Brand-Desert Sand, Multicolor All Natural Sandstone-Durable Stone with Varying Patterns, Every Coaster is an Original

Q: These look really light, do you think they would take a stain to darken them up a bit?

Um, no. They are natural sandstone, which is made of the mineral quartz. Because they are natural stone there is color variation: you either like that, or you don't. To colorize quartz, we apply X-rays or heat treatment (550°F). For quartz to be dyed (or "stained"), you would need to heat/quench it to crack the grains so that the dye would be accepted into the grains. Alternatively, yes: the coasters could "soak up" a stain, into the spaces between the sand grains; but this space is what allows water to be collected when used as a coaster. All of these defeat the purpose of using them as coasters, not to mention that the cork bottom would be destroyed.

Q: Do costers have padded bottom? Concerned about scratching mirrored table.

Yes they have cork bottoms. These are the best coasters I have ever used. I have a glass and oak coffee table, never a scratch or any liquid ever on anything we use these on. Definitively 100% recommend.

Q: How thick is each coaster?

3/8" is the coaster. But there is also cork at the bottom that is 1/16", so 7/16" total

4.3/5

Product ID: 397642448

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Description

Thirstystone Brand-Desert Sand, Multicolor All Natural Sandstone-Durable Stone with Varying Patterns, Every Coaster is an Original

Specifications

Product Care Instructions	Hand Wash Only
Is the item dishwasher safe?	No
Material Type	Stone
Item Dimensions L x W	4"L x 4"W
Shape	Square
Color	Desert Sand Sandstone

Have a Question? See What Others Asked

These look really light, do you think they would take a stain to darken them up a bit?

Do costers have padded bottom? Concerned about scratching mirrored table.

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How thick is each coaster?

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Sneha T.

Received my product in pristine condition. Great service overall.

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Great experience from order to delivery. Highly recommended!

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¥6972

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TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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