Blue black opal with rich character, cut oval with a high cabochon for jewelry, art or collection (.2810 x .2215 x .2060 in., 1.32 ct.).
Back of blue black opal with rich character, cut oval with a high cabochon for jewelry, art or collection (.2810 x .2215 x .2060 in., 1.32 ct.).

Electric Blue Black Opal, 1.32

$135.05

Blue black opal with rich character, cut oval with a high cabochon for jewelry, art or collection (.2810 x .2215 x .2060 in., 1.32 ct.).

SKU: BOD-2-36 Categories: , Tags: ,

Description

Black opal is one of the world’s rarest gemstones.

Variety: Natural Black Opal Type 1
Body Tone: Black N1 (1)
Brightness: Average
Transparency: Opaque
Colour: Blue
Hue: Slightly Pale Tones
Outline: Oval Shape
Profle: High Cabochon
Origin: Lighting Ridge
Pattern: Named Pattern
Display: Weak or Blank 1 Angle
Distribution: 60 – 69%
Inclusions: 1% 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: 1.32 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

Blue black opal – black opal with a very dark blue body color – is particularly rare and highly prized.

View more black opal.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Blue
Shape

Oval

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