$1,600.00 USD

Price

View All Photos (7)

$1,600.00 USD

Price

tourmalinesking

2078

12.10 Carats Australian boulder Pair Opals

2078

SKU
Dimensions (mm): 19.210 x 12.700 x 4.680mm
Weight (cts): 12.100
Treatment: No Treatment
Colours

Description

Opal is a hydrated amorphous form of silica; its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. Wikipedia

Color: Black, Pink, White, Blue, Green, Purple, Yellow, Red, Grey, Orange, Brown

Luster: Vitreous, Waxy, Pearly

Birthstone zodiac sign: Libra

Associated month: October

Crystal system: Amorphous solid

Chemical formula: SiO₂·nH₂O

Hardness (Mohs hardness scale): 5.5 – 6.5

View All Photos (7)

SKU
Dimensions (mm): 19.210 x 12.700 x 4.680 mm
Weight (cts): 12.100
Treatment: No Treatment
Colours

Description

Color: Black, Pink, White, Blue, Green, Purple, Yellow, Red, Grey, Orange, Brown

Luster: Vitreous, Waxy, Pearly

Birthstone zodiac sign: Libra

Associated month: October

Crystal system: Amorphous solid

Chemical formula: SiO₂·nH₂O

Hardness (Mohs hardness scale): 5.5 – 6.5

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