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Opal Gem Jar Ca)₈Al₆Si₆O₂₄ (S

SKU 6982953230
4.3
Description

Ca)₈Al₆Si₆O₂₄ (S

Madagascar

Weight: ~18 oz

sweetgrass

The largest two fragments

Opal Gem Jar Ca)₈Al₆Si₆O₂₄ (SOpal is a form of amorphous silica. This means it forms with no true crystal structure. Opal can naturally contain up to 20% water. Opal is not a mineral, but a mineraloid because of its lack of structure. On a microscopic scale, opal contains spheres of silica, giving rise to the flashes of color we all know and love. The matrix associated with opal can be almost any visible color, most commonly white, occasionally black. Opal is used in helping

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