Crystal opal from Lightning Ridge. This gemstone is green and blue and is cut with a medium cabochon for jewelry, art or collection (.2335 x .1565 x .1315 in., .5 ct.).
Back of crystal opal from Lightning Ridge. This gemstone is green and blue and is cut with a medium cabochon for jewelry, art or collection (.2335 x .1565 x .1315 in., .5 ct.).

Attractive Crystal Opal, .5 ct.

$38.12

Crystal opal from Lightning Ridge. This gemstone is green and blue and is cut with a medium cabochon for jewelry, art or collection (.2335 x .1565 x .1315 in., .5 ct.).

SKU: BOD-2-9 Categories: , Tags: ,

Description

Crystal opal is usually all play of color with little to no potch.

Variety: Natural Light Opal Type 1
Body Tone: Light N7 (15)
Brightness: Average
Transparency: Transparent
Colour: Green-Blue
Hue: Slightly Pale Tones
Outline: Oval Shape
Profle: Medium Cabochon
Origin: Lighting Ridge
Pattern: Named Pattern
Display: Weak or Blank 2 Angles
Distribution: 50 – 59%
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: .50 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

Crystal opal is the closest in value and quality to black opal.

View more crystal opals.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Green, Blue
Shape

Oval

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