No. 100314494

Sold
No reserve price - 1 pcs Blue Topaz - 24.00 ct - International Gemological Institute (IGI)
Final bid
€ 179
5 days ago

No reserve price - 1 pcs Blue Topaz - 24.00 ct - International Gemological Institute (IGI)

Ghene Menezes
Expert

Selected by Ghene Menezes
IGI Report Number: 746504147 • Species/Variety: Natural Topaz / Blue Topaz • Shape & Cut: Cut Cornered Rectangular Mixed Cut • Weight: 24.00 ct • Measurements: 18.36 × 13.57 × 10.62 mm • Color & Transparency: Blue, Transparent • Characteristics: Natural inclusions • Comments: Blue Topaz is commonly treated by irradiation followed by heat. Indicative evidence of treatment is typically lacking. • Optical & Physical Properties: • Refractive Index: 1.619 – 1.627 • Birefringence: 0.008 • Optic Character: Biaxial • Specific Gravity: 3.53

No. 100314494

Sold
No reserve price - 1 pcs Blue Topaz - 24.00 ct - International Gemological Institute (IGI)

No reserve price - 1 pcs Blue Topaz - 24.00 ct - International Gemological Institute (IGI)

IGI Report Number: 746504147
• Species/Variety: Natural Topaz / Blue Topaz
• Shape & Cut: Cut Cornered Rectangular Mixed Cut
• Weight: 24.00 ct
• Measurements: 18.36 × 13.57 × 10.62 mm
• Color & Transparency: Blue, Transparent
• Characteristics: Natural inclusions
• Comments: Blue Topaz is commonly treated by irradiation followed by heat. Indicative evidence of treatment is typically lacking.
• Optical & Physical Properties:
• Refractive Index: 1.619 – 1.627
• Birefringence: 0.008
• Optic Character: Biaxial
• Specific Gravity: 3.53

Final bid
€ 179
Ghene Menezes
Expert
Selected by Ghene Menezes
Retail Estimate  € 350 - € 430

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