Black Spinel not only has the dark color
Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue/white color and pattern that resembles porcelain
who used it extensively in their jewelry
This material dates back 29 million years and has been used in early civilizations as tools similar to obsidian
It is believed to increase one’s metaphysical connection with the earth
Kyanite 2-3x3-4mm Faceted Rondelle - 15-16 Inch high-end-discount Black Spinel not only hasKyanite 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