Lightning Ridge Black Opal Pre Faced Rough Stone. Rough- 1.5 g - (1)
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Selected by Georgia Foteinou
Holds BSc in geology and post-graduate qualifications in geochemistry.
Estimate € 150 - € 200
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Lightning Ridge Black Opal rough stone from Lightning Ridge, Queensland, Australia, weighing 1.5 g (7.5 ct) and measuring 31 × 12 × 2.8 mm, suitable for cutting or as a collectors specimen.
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Description from the seller
7.5 cts Lightning Ridge Black Opal Gem to Cut carve or keep as collectors specimen.
Vibrant unique deep blue hues.
Natural Australian Opal Gem Opal.
Dimensions (mm) 31 x 12 x 2.8mm
Weight (cts) 7.5
Type Rough
### Australian Black Opal – A Rare Piece of Ancient Australian History
Australian Black Opal is regarded as one of the world’s most sought-after and valuable varieties of opal, renowned for its naturally dark body tone and spectacular play-of-colour. The finest specimens can display vivid flashes of red, orange, green, blue and violet against a dark background, creating an incredible depth and intensity.
**Ancient Origins & Formation**
Australian precious opal formed within ancient sedimentary rocks during the **Cretaceous Period**, meaning the geological environment in which these opals formed dates back tens of millions of years. In areas such as Lightning Ridge, silica-rich groundwater travelled through cracks, joints and porous layers of ancient sandstone and mudstone. Over immense periods of time, the silica-rich solution accumulated and gradually hardened into opal.
The brilliant colours are created by microscopic silica spheres within the opal. When light passes through these spheres, it is diffracted into the vibrant spectral colours known as **play-of-colour**.
Australia produces the vast majority of the world's precious opal, with **Lightning Ridge in New South Wales particularly famous for its rare black opal**. Australian opal mining began commercially in the late 1800s, and Australia became the world's major opal producer during the 20th century.
**Metaphysical Properties**
In crystal and metaphysical traditions, Black Opal is often associated with **protection, emotional strength, intuition and personal transformation**. It is believed by some to help encourage creativity, confidence and self-expression while helping the wearer connect with their inner emotions and intuition.
Black Opal is also traditionally regarded as a stone of **mystery and inspiration**, making it particularly popular with collectors and those interested in spiritual symbolism.
*Metaphysical and healing properties are traditional beliefs and are not scientifically proven medical treatments.*
**A Truly Natural Piece of Australian Heritage**
Every Australian Black Opal is completely unique. Its colour pattern, flashes and formation are the result of natural geological processes taking place over immense periods of time. Owning one is not simply owning a gemstone — it is owning a small piece of Australia's extraordinary geological history.
7.5 cts Lightning Ridge Black Opal Gem to Cut carve or keep as collectors specimen.
Vibrant unique deep blue hues.
Natural Australian Opal Gem Opal.
Dimensions (mm) 31 x 12 x 2.8mm
Weight (cts) 7.5
Type Rough
### Australian Black Opal – A Rare Piece of Ancient Australian History
Australian Black Opal is regarded as one of the world’s most sought-after and valuable varieties of opal, renowned for its naturally dark body tone and spectacular play-of-colour. The finest specimens can display vivid flashes of red, orange, green, blue and violet against a dark background, creating an incredible depth and intensity.
**Ancient Origins & Formation**
Australian precious opal formed within ancient sedimentary rocks during the **Cretaceous Period**, meaning the geological environment in which these opals formed dates back tens of millions of years. In areas such as Lightning Ridge, silica-rich groundwater travelled through cracks, joints and porous layers of ancient sandstone and mudstone. Over immense periods of time, the silica-rich solution accumulated and gradually hardened into opal.
The brilliant colours are created by microscopic silica spheres within the opal. When light passes through these spheres, it is diffracted into the vibrant spectral colours known as **play-of-colour**.
Australia produces the vast majority of the world's precious opal, with **Lightning Ridge in New South Wales particularly famous for its rare black opal**. Australian opal mining began commercially in the late 1800s, and Australia became the world's major opal producer during the 20th century.
**Metaphysical Properties**
In crystal and metaphysical traditions, Black Opal is often associated with **protection, emotional strength, intuition and personal transformation**. It is believed by some to help encourage creativity, confidence and self-expression while helping the wearer connect with their inner emotions and intuition.
Black Opal is also traditionally regarded as a stone of **mystery and inspiration**, making it particularly popular with collectors and those interested in spiritual symbolism.
*Metaphysical and healing properties are traditional beliefs and are not scientifically proven medical treatments.*
**A Truly Natural Piece of Australian Heritage**
Every Australian Black Opal is completely unique. Its colour pattern, flashes and formation are the result of natural geological processes taking place over immense periods of time. Owning one is not simply owning a gemstone — it is owning a small piece of Australia's extraordinary geological history.
Details
Number of objects
1
Main mineral
Lightning Ridge Black Opal Pre Faced Rough Stone.
Mineral form
Rough
Weight
1.5 g
Origin (region/city)
Lightning Ridge, Queensland
Country of origin
Australia
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