White opal with red, orange, gold and green cut oval with medium cabochon made for jewelry, art or collection (.2985 x .1715 x .0945, .45 ct.).
Back of white opal with red, orange, gold and green cut oval with medium cabochon made for jewelry, art or collection (.2985 x .1715 x .0945, .45 ct.).

Graceful White Opal, .45 ct.

$73.85

White opal with red, orange, gold and green cut oval with medium cabochon made for jewelry, art or collection (.2985 x .1715 x .0945, .45 ct.).

SKU: CPO-1-6 Categories: , Tags: ,

Description

A 30,000X microscope reveals opals are made up of billions of silica spheres in a uniform grid.

Variety: Natural White Opal Type 1
Body Tone: Light N9 (20)
Brightness: Slightly Bright
Transparency: Transparent
Colour: Red-Multi
Hue: Slightly Pale Tones
Outline: Oval Shape
Profle: Medium Cabochon
Origin: South Australia
Pattern: Mixed Pattern
Display: Weak or Blank 2 Angles
Distribution: 50 – 59%
Inclusions: No Inclusions
MOHS Scale: 4.5-6.5
Polish: 2.15+0.08-0.09
R.F.I.: 1.450+0.020
Spec Gravity: 1.98 – 2.25
Carat Weight: .45 Carats
Formula: Si02nH20
Fracture: Conchoidal – Uneven
Lustre: Vitreous – Resinous
Flourescence: May phosphoresce in long /short wave
Absorption: Spectra 660nm, 470nm
Category: Mineraloid (Amorphorous)
Crystal Habit: Irregular ‘nodular’ Veins
Composition: Hydroussilicondioxide.3-21%/weight
Crystal Form: Amorphous, pseudomorph, botryoidal

Opal takes around five million years to develop little more than a third of an inch, likely after rain washed silica gel into the opal dirt.

View more white opals.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Red, Orange, Gold, Green
Shape

Oval

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