|Dimensions (mm)||10 x 10 x 3mm|
|Weight (carats)||not provided|
MOTHER OF PEARL CARVING
This is a well carved parcel of four half drilled flowers carvings with a beautiful finish suitable for rings.The pearl [nacre ] shell glistens like opal colour.
Weight 7.35 cts app
size 10 mm app
Nacre is made mostly of aragonite--a calcium carbonate crystal--arranged in 500-nanometer-thick layers. It forms from ions in seawater that washes through an organic "scaffold" of thin, interconnected, horizontal sheets--the animal essentially lays the "mortar" before filling in the "bricks." The iridescence of mother-of-pearl comes from the interference of light as it reflects from the thin, crystalline layers. But the beauty is only part of what drew Pupa Gilbert, of the University of Wisconsin, Madison, to study nacre. "Materials scientists have been interested in mother-of-pearl for decades because this material is 3000 times more resistant to fracture than its components," she says, referring to the organic and crystalline constituents.
Excellent stone. Far exceeds my expectations. Great faceting, superb polish, sparkling and intriguing color! Speedy delivery! Thank you for a superior gem.0.71 CTS - VS NATURAL AUSTRALIAN SAPPHIRE [SAP116]
|Starts||26th Feb 2017 11:02pm PST|
|Ends||27th Feb 2017 11:17am PST|
|Registered Shipping||$15.00||10 Days|
|Standard Shipping||$4.00||21 Days|
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