It is mined under extremely harsh conditions and the high-grade specimens are more rare than diamonds
Indigo gabbro is a color variant of the igneous mineral
Feldspar is believed by metaphysical adherents to be a gemstone of creativity
The stone fragments remain clearly visible
and forms naturally as a glassy
Blue Nepal Kyanite 3x6-5x8mm Grauated Faceted Rondelle Necklace - 15-16 Inch 8x20mm It is mined under extremelyKyanite 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