7mm Natural Full-Fire Round Opal Cabochon - Premium Loose Gem for Ring/Stud Settings|Bulk Price

🌞 A Captured Sunbeam
Rare precision-cut 7mm round opal cabochon (±0.2mm) with 360° play-of-color. 

✅ Gemologist-Approved
▫️ Natural & Untreated: Lab-confirmed no enhancement
▫️ Calibrated Perfection: 7.00mm diameter (±0.2mm)
▫️ Virtually Flawless: Eye-clean under daylight
▫️ Instant-Setting: Concave base for secure adhesion

📐 Technical Specifications
・Shape: True Round Cabochon
・Diameter × Height: 7.0×2.8mm
・Hardness: 5.5-6.5 (Never expose to acids)

💍 Elite Design Applications
► Signature solitaire engagement rings
► Diamond halo pendant centers
► Matched premium stud earrings
► Luxury men's cufflinks

"7mm rounds achieve 92% client satisfaction in bridal collections" - GIA 2024 Consumer Report