House 2 Amasom 18 Bishop Edward Benson street Ogudu GRA phase 2
Welcome To Ashstone Exports LTD
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Nigeria
Ashstone Exports Ltd is a trusted name among the leading Topaz suppliers & exporter from Nigeria, offering premium-quality Topaz gemstones in natural shades such as white, blue, and golden. Sourced from Nigeria's mineral-rich regions, our Topaz is valued for its exceptional clarity, hardness, and brilliance-making it highly sought-after in fine jewelry and gemstone markets worldwide. We provide both raw and polished Topaz, carefully sorted and graded by experienced gemologists. Whether you're a jeweler, wholesaler, or gemstone collector, we cater to custom requirements with flexible sizes, cuts, and packaging.
Recognized as the best quality Topaz supplier & exporter, Ashstone Exports is committed to ethical sourcing, consistent quality, and reliable global delivery. Our strict quality checks and customer-first approach make us a preferred supplier for buyers seeking authenticity and long-term value. Partner with Ashstone for genuine Nigerian Topaz that meets international standards and showcases natural beauty.
Property | Specification |
Chemical Formula | Al₂SiO₄(F,OH)₂ |
Crystal System | Orthorhombic |
Crystal Habit | Prismatic crystals, often with striations |
Color | Colorless, yellow, blue, pink, brown, green, orange, red |
Luster | Vitreous |
Transparency | Transparent to translucent |
Hardness (Mohs) | 8 |
Specific Gravity | 3.4 to 3.6 |
Cleavage | Perfect basal cleavage |
Fracture | Subconchoidal to uneven |
Streak | White |
Refractive Index | 1.609 to 1.643 |
Birefringence | 0.008 to 0.010 |
Pleochroism | Weak to moderate (varies by color) |
Tenacity | Brittle |
Magnetism | Non-magnetic |