Description
ID: ST-OP-001
Origin: Lightning Ridge
Weight: 3.04 Carats
Shape: Oval Shape
Color: Green-Blue
Brightness: Slightly Bright
Transparency: Transparent
Hue: Normal Tones
Profile: Low Cabochon
Treatment: None
Hardness: 4.5-6.5 (MOHS Scale)
Description:
This natural dark opal from Lightning Ridge features a stunning black body tone (Black N5) and a captivating green-blue hue.
The opal’s brightness is slightly bright, and it is transparent with no inclusions, offering excellent clarity.
Its oval shape and low cabochon profile, combined with a blocky pattern, create a unique visual appeal.
The display is weak or blank at one angle, with a distribution of 50–59%, adding to its distinctive character.
The irregular ‘nodular’ veins contribute to its intricate design, while the vitreous-resinous lustre provides depth and brilliance.
The opal fractures in a conchoidal and uneven manner, enhancing its natural, organic feel.
Physical Properties:
- Category: Mineraloid (Amorphous)
- Cleavage: None
- Crystal Form: Amorphous pseudomorph, botryoidal
- Crystal Habit: Irregular ‘Nodular’ Veins
- Crystal System: Amorphous
- Composition: Hydrous silicon dioxide (3-21% / weight)
- Density: 2.09
- R.F.I.: 1.450 ± 0.020
- Specific Gravity: 1.98 – 2.25
- Streak: White
- Fluorescence: May phosphoresce in long/short wave
- Transparency: Transparent to Opaque
- Fracture: Conchoidal – Uneven
- Diapheny: Opaque/Translucent/Transparent
- Solubility: Methanol, Humic, Hydrofluoric Acid
- Tenacity: Brittle
- Type: Igneous, Sedimentary, Metamorphic
- Formation: Igneous environments
- Lustre: Vitreous – Resinous
- MOHS Scale: 4.5-6.5
- Pleochroism: None
- Polish: 2.15 ± 0.08-0.09
Carat Weight: 3.04 Carats
Price Per Carat:
- Lower Price: $430.18
- Upper Price: $523.46
Total Opal Value: - Lower Value: $1,307.76
- Upper Value: $1,591.30
Note: All opals are photographed and filmed without any editing or adjustments. The true colors and stunning patterns are often even more remarkable in person, and we are confident that you will fall in love with this opal upon receipt.
