Blue Opal Faceted Teardrop Pendant Bead Healing Gemstone 22x16x9mm

Description

Natural Opal from Australia.
You will receive the similar item as pictured.
Quantity:
1P
Origin:
Australia
Weight:
20
CT
Treatment:
None
Gem Type:
100% Natural Opal
Hardness:
5.5 - 6.5
Diameter:
None
Refractive Index:
1.37 - 1.52
Bead Size:
Opal Pendant: 22x16x9mm
Specific Gravity:
2.15+0.08 −0.90
Color:
As Picture
Origin:
Australia
Tips:
.
Opal
is a gem-quality form of hydrated amorphous silicon dioxide. Its name is derived from the Sanskrit word for 'stone'. It is gemologically classed as a mineraloid rather than a mineral, owing to its amorphous form. Opal is considered to be the national gemstone for Australia, owing to the fact that Australia produces roughly 97% of the world's entire supply of opal gemstones. Opals can be divided into three main subgroups: precious opal, fire opal and common opal (potch).
Opal is famed for its ability to diffract light. The exact cause of opal's unique properties was only recently discovered by Australian scientists in the 1960s after analysis with electron microscopes. It was discovered that small spheres of silica gel caused interference, refraction and diffraction of light, resulting in opal's distinctive play of color. The varying refractive indices of the spheres and spaces between them dissect the light on its passage through the stone. As light enters the opal, it bends around the tiny particles or 'spheres' of hydrated silica, as well as 'chips' of silicon and oxygen suspended within the stone. Light is comprised of all visible colors and can produce an entire spectrum of colors when it is diffracted.
Precious opal is known for its remarkable ability to diffract light, which results in rainbow-like colors that change with the angle of observation - known as 'play of color'. Fire opal can sometimes exhibit slight color play, but it is better known for its vivid body color. Common opal is usually opaque, rarely translucent, and lacks play of color. It is often found mixed with other gemstones, such as agate opal or moss opal. Common opal is known to exhibit 'opalescence'. The term 'opalescence' is often mistaken for 'play of color'. Opalescence should technically only be used to describe the optical effects seen in common opal. Opalescence is caused by the reflection of light and appears as a sheen of light, typically milky-bluish in color. It is a form of adularescence, whereas 'play of color' is iridescence caused by light diffraction.
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US Shipping
{{detail_product_description}}.00 USPS First-Class Mail®
{{detail_product_description}}.90 * For each additional item
International Shipping
.95 USPS First-Class Mail International
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