October birthstone opal cut oval with a medium cabochon for jewelry, art or collection. Colors are green, orange, yellow and pink (.2070 x .1860 x .0980 in., .4 ct.).
Back of October birthstone opal cut oval with a medium cabochon for jewelry, art or collection. Colors are green, orange, yellow and pink (.2070 x .1860 x .0980 in., .4 ct.).

Blushing October Birthstone, .4 ct. Opal

$48.80

Green, orange, yellow and pink bring this Lightning Ridge opal to life. Oval cut with a medium cabochon for jewelry, art or collection (.2070 x .1860 x .0980 in., .4 ct.).

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

Description

The October Birthstone is Opal.

Variety: Natural Light Opal Type 1
Body Tone: Light N7 (14)
Brightness: Bright
Transparency: Translucent
Colour: Orange-Green
Hue: Normal Tones
Outline: Oval Shape
Profle: Medium Cabochon
Origin: Lighting Ridge
Pattern: Mixed Pattern
Display: Weak or Blank 2 Angles
Distribution: 40 – 49%
Inclusions: 30% 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: .40 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

Opals are traditionally gifted for 14th anniversaries.

View more crystal opals.

Additional information

Weight 45 g
Dimensions 9 × 6.5 × 1.5 in
Color

Orange, Gold, Green, Pink
Shape

Oval

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