Although the trade name is Grape Agate, it is actually a form of purple botryoidal chalcedony. Botryoidal means round tiny sphere-shaped crystals that have naturally formed together. Chalcedony is not scientifically its own mineral species, but rather a form of Quartz in microcrystalline form. Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite.
Hardness: 7
Chemical: SiO₂
***NOTE TO BUYER***
-This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to the unique nature of each mineral the size, shape, and color may vary slightly.
-The size of this product is categorized by weight. Because of this, the dimensions and style of the mineral may vary. If you have certain requirements regarding specifications, please note them within the order or contact us.
