Natural Australian Fire Opal - Lab Certified

Natural Australian Fire Opal - Lab Certified from GemsMantra is a 100% genuine, earth-mined/natural loose gemstone sourced from Australia (Coober Pedy / Lightning Ridge). Each stone is individually inspected by qualified gemologists for natural crystal structure, optical properties, and color uniformity, and ships with an independent gemological laboratory authenticity report.

Gemological Specifications

• Mineral Species: Natural Hydrated Amorphous Silica (SiO2-nH2O)
• Gemstone Variety: Natural Australian White Precious Fire Opal
• Origin: Australia (Coober Pedy / Lightning Ridge)
• Color & Appearance: Opaque-Translucent Milky White Body with Multi-Color Spectral Pinfire & Broad Flash
• Shape & Cut: Oval Cabochon / Smooth Polished Dome
• Treatment Disclosure: 100% Untreated Solid One-Piece Natural Opal
• Refractive Index: 1.440 - 1.460
• Specific Gravity: 2.10 - 2.15
• Mohs Hardness: 5.5 - 6.5
• Carat-to-Ratti Conversion: Standard Indian Gemological Scale where 1 Ratti = 0.90 Carat (Available calibrated weights: 4.25 Ratti (3.83 Carat), 5.25 Ratti (4.73 Carat), 6.25 Ratti (5.62 Carat), 7.25 Ratti (6.53 Carat), 8.25 Ratti (7.42 Carat), 9.25 Ratti (8.33 Carat), 10.25 Ratti (9.22 Carat))
• Lab Certification: Authenticated by an ISO-certified independent gemological testing laboratory (verifying natural origin, species, variety, weight, and optical constants; physical report card included in box)
• Mounting Options: Available as an unmounted Loose Gemstone, Adjustable Panchdhatu Ring (+Rs.0 FREE on loose stones >=Rs.15,000; +Rs.500 under Rs.15,000), 925 Sterling Silver Ring (+Rs.2,999), or 925 Sterling Silver Pendant (+Rs.2,499), plus live 9KT/14KT/18KT BIS Hallmarked Gold Ring customisation on page.

GemsMantra Zero-Risk Assurance & Custom Ring Studio

• 100% Natural Certified Gemstone: Guaranteed 100% earth-mined natural gemstone formation (never glass-filled, dyed, or artificially manufactured).
• QR-Verifiable Lab Report: Authenticated by an ISO-certified independent gemological testing laboratory with a physical QR-verifiable Lab Report card shipped inside every box.
• 4-Hour 3-Real-Stone WhatsApp Video Selection: Within 4 hours of booking (Prepaid or Partial Token), our gemologist desk shares natural daylight videos and QR lab certificates of 3 real in-stock stones in your selected Ratti weight on WhatsApp so you approve your exact piece prior to dispatch.
• Free Adjustable Panchdhatu Ring on >=Rs.15,000: Complimentary custom Adjustable Panchdhatu Ring (+Rs.0 FREE on loose stone orders >=Rs.15,000; +Rs.500 below Rs.15,000), plus custom Hallmarked 925 Sterling Silver Ring (+Rs.2,999) and 925 Sterling Silver Pendant (+Rs.2,499).
• Dynamic 9KT/14KT/18KT BIS Hallmarked Gold Ring Studio on Page: Configure live weight-calibrated 9KT, 14KT, or 18KT BIS Hallmarked HUID Gold Rings (R3-R30 Vedic open-back skin-touch CAD designs) directly in the interactive Gold Ring Studio on the product page, with Snapmint Pay Later / Cardless Installments supported at checkout.
• 80% Lifetime Upgrade Value: Backed by GemsMantra's 80% Lifetime Upgrade Value privilege toward any higher-value certified natural gemstone upon presenting your original tax invoice and lab certificate.