没有保留价 - 1 pcs 黄色, 棕色黄宝石 - 39.73 ct - 国际宝石研究院（IGI）

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由Alberto Fidalgo精选

IGI Report Number: 749579919 Report Date: November 21, 2025 Stone Identification • Species: Topaz • Variety: (Not specified by IGI — color suggests brown/yellow topaz) • Shape & Cut: Emerald Cut Weight & Measurements • Weight: 39.73 carats • Measurements: 22.02 × 16.41 × 11.34 mm Color & Transparency • Color: Yellowish brown • Transparency: Transparent Internal Characteristics • Natural inclusion pattern observed Optical & Physical Properties • Refractive Index: 1.619 – 1.627 • Birefringence: 0.008 • Optic Character: Biaxial • Specific Gravity: (Typical topaz ~3.53; IGI not explicitly listed) • Optical and physical properties are approximate.

编号 100609193

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没有保留价 - 1 pcs 黄色, 棕色黄宝石 - 39.73 ct - 国际宝石研究院（IGI）

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IGI Report Number: 749579919
Report Date: November 21, 2025

Stone Identification
• Species: Topaz
• Variety: (Not specified by IGI — color suggests brown/yellow topaz)
• Shape & Cut: Emerald Cut

Weight & Measurements
• Weight: 39.73 carats
• Measurements: 22.02 × 16.41 × 11.34 mm

Color & Transparency
• Color: Yellowish brown
• Transparency: Transparent

Internal Characteristics
• Natural inclusion pattern observed

Optical & Physical Properties
• Refractive Index: 1.619 – 1.627
• Birefringence: 0.008
• Optic Character: Biaxial
• Specific Gravity: (Typical topaz ~3.53; IGI not explicitly listed)
• Optical and physical properties are approximate.