These are 5 pieces of oval cabochon-cut, top royal-blue (with golden Pyrite flecks), natural Chinese Lapis Lazuli gemstones. They weigh 0.85cts (4.25cts total) and measure 7x5mm each.
Below is the technical information:
Size: | 5 Pieces of 7x5mm | |
Shape: | Oval Cabochon-Cut | |
Color: | Top Royal-Blue with Golden Pyrite Flecks | |
Clarity: | Opaque | |
Luster: | Good Polish | |
Origin: | China | |
Hardness: | 5 - 6 | |
Specific Gravity: | 2.70 - 2.90 | |
Refractive Index: | 1.50 | |
Chemical Composition: | (Na, Ca)8Al6Si6O24(S,SO4), Sodium Calcium Aluminum Silicate Sulfur | |
Crystal Structure: | Isometric |
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