Kyanite (Round)(Smooth)(Blue)(Green)(Grey)(4mm)(6mm)(8mm)(10mm)(16"Strand)Kyanite is an aluminum silicate mineral that is commonly found in quartz and most often forms from high pressure. Its name comes from the Greek word which means 'blue'. This is why Kyanite is mostly known for its blue color, but it also comes in green and grey such as the beads in these strands. Sold By Strand Origin: Brazil, Tanzania, New Zealand Metaphysical Properties: Creativity, Harmony Mohs Hardness: 4. 5 7 Average Strand Length: 16in Average