MOTHER OF PEARL BEAD STRAND 171.75 CTS [PF1740]

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细节

存货单位
尺寸（毫米）: x x mm
重量 (cts)
Certified Gemstones: 不
Shape: Pear
颜色

描述

MOTHER PEARL BEAD

This is a natural strand of bright mother of pearl with small beads from korea

Stunning effect.

High luster.

Weight of beads 171.75 cts app.

Size 8.7 x 7 mm app.

Length of strand 49 cm 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.

船运

运输商	运送至：国家	运送到世界其他地区	联合运输（澳大利亚）	联合运输（世界其他地区）
FedEx	/ ：几天天	/ ：几天天	订单包含2或更多商品	订单包含2或更多商品
Registered Shipping	/ ：几天天	/ ：几天天	订单包含2或更多商品	订单包含2或更多商品

细节

存货单位
尺寸（毫米）: x x mm
重量 (cts)
Certified Gemstones: 不
Shape: Pear
颜色

描述