Vintage Natural Genuine Blue Lapis Lazuli Bangle Bracelet 18.62 mm

Description

Vintage Natural Genuine Blue Lapis Lazuli Bangle Bracelet 18.62 mm. Condition is Pre-owned in mint condition.
Weight: 88.3 grams.
Size: 10” outside, 7.5” inside.
Width: 18.62 mm
The majority of gemstones are valued by their color and none more so than Lapis Lazuli – if it is not blue it is not Lapis Lazuli, and the bluer the better! The ideal color is a vivid, even, dark blue color, perhaps with violet undertones. Lapis Lazuli nearly always has some blemishes or inclusions, usually white calcite or golden pyrite, and uniform colored gemstones with fewer inclusions are valued higher.
Pyrite can cause attractive patterns of golden flecks in a deep blue background and if it is not too dense can enhance the appearance and increase the price. White streaks of calcite are quite common and not so attractive so this will lower the value.
Unusually for a gemstone, Lapis Lazuli is technically a rock not a mineral like most. It is an aggregate of several minerals such as lazurite, pyrite, calcite, feldspar, mica, diopside and others. It is the lazurite that provides the blue color with better quality gemstones being at least 25% lazurite.
NOTE: I have the matching necklace, ring and earrings on my eBay store if you are interested.
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