Opal pair cut round with medium cabochon for jewelry, art or collection. Black opal with green and blue (.1820 x .1520 x .1415 in. & .1770 x .1510 x .1130 in., .83 ct. total)
Backs of opal pair cut round with medium cabochon for jewelry, art or collection. Black opal with green and blue (.1820 x .1520 x .1415 in. & .1770 x .1510 x .1130 in., .83 ct. total)

Exclusive Black Opal Pair, .83 ct.

$153.72

Black opal pair with green and blue colors from Lightning Ridge cut round with medium cabochon ideal for jewelry, art or collection (.1820 x .1520 x .1415 in. & .1770 x .1510 x .1130 in., .83 ct. total)

SKU: BOD-2-13 Categories: , Tags: ,

Description

An opal pair is a rare treasure! No two opals are identical.

Variety: Natural Black Opal Type 1
Body Tone: Black N4 (8)
Brightness: Average
Transparency: Opaque
Colour: Green-Blue
Hue: Normal Tones
Outline: square, Round, Oblong
Profle: Medium Cabochon
Origin: Lighting Ridge
Pattern: Named Pattern
Display: Weak or Blank 1 Angle
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

What makes each opal different are the veins, sheens, colors and impurities special to each individual piece.

View more black opals.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Green, Blue
Shape

Round

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