Dark opal stone with green and blue flashes. Cut oval with a medium cabochon for jewelry, art or collection (.2945 x .2315 x .1190 in., .83 ct.).
Back of dark opal stone with green and blue flashes. Cut oval with a medium cabochon for jewelry, art or collection (.2945 x .2315 x .1190 in., .83 ct.).

Delightful Dark Opal Stone, .83 ct.

$150.00

Dark opal stone with green and blue flashes, quality cut oval with a medium cabochon for jewelry, art or collection (.2945 x .2315 x .1190 in., .83 ct.).

SKU: BOD-2-18 Categories: , Tags: ,

Description

Dark opal stones are lighter than black opals and darker than white opals.

Variety: Natural Dark Opal Type 1
Body Tone: Dark N6 (11)
Brightness: Slightly Bright
Transparency: Transparent
Colour: Green
Hue: Slightly Pale Tones
Outline: Oval Shape
Profle: Medium Cabochon
Origin: Lighting Ridge
Pattern: Named Pattern
Display: Weak or Blank 2 Angles
Distribution: 60 – 69%
Inclusions: 10% of Face
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: .83 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

Dark opal stones are a great choice if you don’t have a black opal budget.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Green, Blue
Shape

Oval

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