Check the listing for details. Shungite Cube (1 Piece) Size 4 cm Polished Crystal Gemstone Shape Decor. Condition: New. Listed at 13.99 USD. Polished Crystal Shungite Cube Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Listing is for (1 piece) Avg Size Range: (4 centimeters) Material Origin: (Russia) Shungite is an extremely carbon-rich mineraloid, meaning that it shares many qualities with other minerals but does not have an underlying crystalline structure. Containing 98% carbon by weight, most shungite deposits have been found in Russia, with other deposits occurring in other parts of Europe and Asia. The oldest deposits have been dated to approximately 2 billion years ago. Custom Requests: Have specific preferences? Leave a message with your order, and we'll do our best to accommodate your requests if possible. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.