The inclusions can be so dense as to make the clear Quartz nearly opaque
it is exclusively sourced from a single small deposit in the desert of Madagascar
Blood Quartz is a clear to milky-white silicon dioxide mineral
This turquoise is known for having a higher silica content than many other types
Kyanite 3-5mm Graduated Faceted Rondelle - 15-16 Inch Color_Yellow The inclusions can be soKyanite often occurs as long, bladed, striated crystals, transparent or translucent with a pearly luster. An aluminum silicate mineral, it may appear in white, pink, yellow, orange, green, blue, gray and black. In addition to its value as a gemstone, Kyanite is also extremely useful in industrial applications due to its high heat resistance. It is often used in kiln furniture and foundry molds, as well as for brake shoes, grinding wheels and cutting