Exotic Coin Shape Blue Kyanite Crystal (also known as cyanite or disthene) Beads Dangle Shepherd Hook Earrings

7mm and 13mm coin shape nicely colored Blue Kyanite (also known as cyanite) beads dangle shepherd hook earrings.
Kyanite specimens have a variable hardness. The long crystals have a Mohs hardness of about 4.5 to 5 if tested parallel to the length of a crystal, and a hardness of 6.5 to 7 if tested across the short dimension of a crystal. The mineral was once commonly called "disthene" which means "two strengths."
Earrings is handmade and can be customized upon request.
Location: Minas Gerais, Brazil
Size: 4.4 Centimeter in length including leverback (1.7 inches)
Weight: 6.3 Grams Combined