Ethiopian Opal Natural Crystal 15-30mm Genuine Welo Fire Opal Specimen
£ 8.40
ETHIOPIAN OPAL – NATURAL WELO OPAL CRYSTAL (15–30MM)This Ethiopian Opal is a genuine natural mineral specimen sourced from Ethiopia,
carefully selected for its attractive colour play and overall quality. Each crystal measures approximately 15–30mm (full sizing please see photo) and is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming it as a 100% genuine specimen. The photograph provided shows an example of the actual piece you will receive, with each stone individually chosen for visual appeal and character. MINERAL CLASSIFICATION & GEOLOGICAL INFORMATIONEthiopian Opal is a variety of precious opal, a hydrated amorphous form of silica with the chemical composition SiO₂·nH₂O. Unlike crystalline quartz, opal does not possess a defined crystal system due to its amorphous internal structure. Instead, it is composed of microscopic silica spheres arranged in a grid-like pattern. When these spheres are uniform in size and well-ordered, they diffract light, producing the sought-after play-of-colour effect.Most Ethiopian Opal on the market today originates from the Welo (Wollo) Province in northern Ethiopia. These opals typically form within volcanic rock, particularly rhyolitic lava flows, where silica-rich water filled cavities and solidified over time. Welo opals are often classified as hydrophane opal, meaning they can temporarily absorb water, which may influence transparency and appearance until fully dried. COLOUR, CLARITY & OPTICAL FEATURESEthiopian Opal is admired for its vibrant internal flashes, often displaying spectral hues such as red, orange, green, blue, and violet. The base body colour can range from milky white and translucent crystal to honey, pale yellow, or light amber tones.These specimens commonly exhibit:
• Bright multicolour fire (play-of-colour)
• Translucent to semi-translucent clarity
• Smooth natural surfaces or lightly polished finishes
• Occasional natural inclusions or matrix remnantsEach stone is unique due to natural geological formation processes, ensuring no two pieces are identical. SIZE & PRESENTATION
• Size: 15–30mm (please refer to photo for full sizing reference)
• Type: Natural Ethiopian Opal (Welo)
• Form: Natural crystal/mineral specimen
• Authenticity: Includes Certificate of Authenticity lifetime guarantee generic cardYour opal will be securely packaged to ensure safe arrival and is ideal for mineral collectors, crystal enthusiasts, jewellery makers, or as a distinctive geological gift. COLLECTING, DISPLAY & TRADITIONAL ASSOCIATIONSEthiopian Opal is highly regarded among mineral collectors for its modern discovery history and striking optical properties. Its relatively recent emergence in the global gemstone market has made Welo opal one of the most popular precious opals available today.Traditionally associated in spiritual contexts with creativity and inspiration, opal has long been valued across cultures as a stone of light and colour. These associations are cultural and historical in nature. NATURAL SPECIMEN QUALITYThis crystal is a carefully chosen natural piece, selected for its attractive play-of-colour and overall presentation. As a genuine mineral formed within volcanic environments, slight variations in shape, colour distribution, and internal patterning are normal and part of its natural character.A beautiful and collectible Ethiopian Opal specimen, perfect for display, gifting, or adding to a curated mineral collection.
carefully selected for its attractive colour play and overall quality. Each crystal measures approximately 15–30mm (full sizing please see photo) and is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming it as a 100% genuine specimen. The photograph provided shows an example of the actual piece you will receive, with each stone individually chosen for visual appeal and character. MINERAL CLASSIFICATION & GEOLOGICAL INFORMATIONEthiopian Opal is a variety of precious opal, a hydrated amorphous form of silica with the chemical composition SiO₂·nH₂O. Unlike crystalline quartz, opal does not possess a defined crystal system due to its amorphous internal structure. Instead, it is composed of microscopic silica spheres arranged in a grid-like pattern. When these spheres are uniform in size and well-ordered, they diffract light, producing the sought-after play-of-colour effect.Most Ethiopian Opal on the market today originates from the Welo (Wollo) Province in northern Ethiopia. These opals typically form within volcanic rock, particularly rhyolitic lava flows, where silica-rich water filled cavities and solidified over time. Welo opals are often classified as hydrophane opal, meaning they can temporarily absorb water, which may influence transparency and appearance until fully dried. COLOUR, CLARITY & OPTICAL FEATURESEthiopian Opal is admired for its vibrant internal flashes, often displaying spectral hues such as red, orange, green, blue, and violet. The base body colour can range from milky white and translucent crystal to honey, pale yellow, or light amber tones.These specimens commonly exhibit:
• Bright multicolour fire (play-of-colour)
• Translucent to semi-translucent clarity
• Smooth natural surfaces or lightly polished finishes
• Occasional natural inclusions or matrix remnantsEach stone is unique due to natural geological formation processes, ensuring no two pieces are identical. SIZE & PRESENTATION
• Size: 15–30mm (please refer to photo for full sizing reference)
• Type: Natural Ethiopian Opal (Welo)
• Form: Natural crystal/mineral specimen
• Authenticity: Includes Certificate of Authenticity lifetime guarantee generic cardYour opal will be securely packaged to ensure safe arrival and is ideal for mineral collectors, crystal enthusiasts, jewellery makers, or as a distinctive geological gift. COLLECTING, DISPLAY & TRADITIONAL ASSOCIATIONSEthiopian Opal is highly regarded among mineral collectors for its modern discovery history and striking optical properties. Its relatively recent emergence in the global gemstone market has made Welo opal one of the most popular precious opals available today.Traditionally associated in spiritual contexts with creativity and inspiration, opal has long been valued across cultures as a stone of light and colour. These associations are cultural and historical in nature. NATURAL SPECIMEN QUALITYThis crystal is a carefully chosen natural piece, selected for its attractive play-of-colour and overall presentation. As a genuine mineral formed within volcanic environments, slight variations in shape, colour distribution, and internal patterning are normal and part of its natural character.A beautiful and collectible Ethiopian Opal specimen, perfect for display, gifting, or adding to a curated mineral collection.
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