|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
MINERAL GEM WORLD
This is a natural strand of Kyanite mined in Brazil.The beads have a flat top and rounded sides
Size of beads 10 x 8 mm app
Weight 141.20 cts app
Length of strand 40 cm app
This bead is strung for transport so we suggest you re string it.
The most highly prized kyanite is the vibrant blue or blue-green hue. It is also found in shades of gray, yellow, white and a colorless variety that is considered quite rare.
Kyanite is a polymorph with two other minerals; andalusite and sillimanite. A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals. Kyanite is an attractive mineral that has a near sapphire like blue color in some especially nice specimens. Kyanite has a unique characteristic in that it has a wide variation in hardness, in the same crystal. The hardness of kyanite is approximately 4.5 when scratched parallel to the long axis of the crystal and approximately 6.5 when scratched perpendicular to or across the long axis. Other minerals usually have variable hardness on different crystal faces due to a different concentration and oreintation of the atoms in the structure
|Starts||27th Oct 2016 8:02pm PDT|
|Ends||29th Oct 2016 8:00pm PDT|
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