Lot of 3 large show white natural tumbled Cacholong (common opal) from Kazakhstan

This is a lot of 3 large Natural tumbled Cacholong also known as Kalmuck agate from Kazakhsta.
Cacholong is white, common an opaque, highly porous opal.
These stones are perfect for crafting, collecting, metaphysical use, or jewelry making.
Location: Pstan, Kazakhstan
Size: up to 5.0 Centimeters
Weigh: each lot is about 50 Grams