12 Carat Round Brilliant VVS1 D Moissanite Space Diamond | 15mm | + GRA Report & Warranty | GemDrop® Verified

Experience the ultimate expression of moissanite with this extraordinary 12 carat (15 mm) Round Brilliant Moissanite, featuring exceptional VVS1 clarity and D colour. Representing the flagship of the Gemdrop® moissanite collection, this exceptional gemstone delivers breathtaking brilliance, fire, and scintillation on a scale rarely encountered in fine jewellery.

Every Gemdrop® moissanite is individually scientifically verified, supplied with an official GRA (Gemological Research Association) Certificate and Warranty Card, and is permanently recorded in the Gemdrop® Verification Database. Each stone also includes our Lifetime Authenticity Guarantee, providing complete confidence in its identity and authenticity.

THE FLAGSHIP OF THE GEMDROP® COLLECTION

At 15 mm (12 carats), this is an extraordinary collector-grade gemstone. Its exceptional size allows the precision-engineered Round Brilliant cut to produce an unrivalled display of brilliance, intense white light, and vivid spectral fire.

This is a gemstone created without compromise. Whether commissioned into a bespoke ring, luxury pendant, exhibition piece, or retained as part of a serious gem collection, it offers a level of visual impact achieved by very few gemstones available today.

MORE BRILLIANCE. MORE FIRE.

Moissanite is one of the highest-performing gem materials available. With a refractive index of approximately 2.65–2.69 and a dispersion of 0.104, it produces substantially greater brilliance and spectral fire than diamond, creating extraordinary flashes of colour under both natural and artificial light.

Where diamond is singly refractive, moissanite is doubly refractive, contributing to its distinctive, vibrant sparkle, exceptional fire, and remarkable light performance.

With a hardness of ~9.5 on the Mohs scale, moissanite is exceptionally resistant to scratching and ideally suited to jewellery designed to be enjoyed for generations.

To the unaided eye, high-quality Gemdrop® moissanite and diamond are visually indistinguishable in everyday wear. Without specialist gemological testing, most observers cannot reliably differentiate between them.

THE ORIGINAL SPACE DIAMOND

Moissanite was first identified by Nobel Prize-winning chemist Henri Moissan in microscopic crystals recovered from Arizona's Meteor Crater. Naturally occurring moissanite is one of the rarest minerals known, with gem-quality natural crystals being extraordinarily scarce.

Today, the world's finest moissanite is grown using advanced laboratory crystal growth techniques, producing gemstones of exceptional optical quality, consistency, and durability while preserving one of the most fascinating origin stories in gemology.

SCIENTIFICALLY VERIFIED

Every Gemdrop® gemstone is individually examined before dispatch and assigned its own unique Gemdrop ID, which is permanently recorded within the live Gemdrop Verification Database.

Verification includes:

• Gemdrop® Unique ID
• Scientific identification
• Size confirmation
• Cut assessment
• Clarity assessment
• Colour assessment
• Thermal conductivity testing
• GRA certificate reference
• Verification status
• Lifetime Authenticity Guarantee
• Gemdrop® Verification Record

Simply enter your Gemdrop ID or scan the QR code to instantly access your gemstone's permanent online verification record.

Unlike generic marketplace listings where gemstones can be substituted or misrepresented, every Gemdrop gemstone has its own permanent digital identity, providing complete transparency and traceability from the moment it is verified.

GEMDROP® LIFETIME AUTHENTICITY GUARANTEE

Every Gemdrop® gem is backed by our commitment to scientific accuracy, transparency, and traceability.

We guarantee for life that every gemstone matches its stated identity and material specification. Every stone is scientifically tested, assigned a unique Gemdrop ID, and permanently recorded within the Gemdrop Verification Database.

Our guarantee covers gemstone authenticity and material identification only and does not cover accidental damage, normal wear, loss, theft, or third-party modification.

INCLUDED

• 12 ct (15 mm) Round Brilliant Lab-Grown Moissanite
• D Colour
• VVS1 Clarity
• Official GRA Certificate & Warranty Card
• Gemdrop® Scientific Verification
• Permanent Online Verification Record
• Unique Gemdrop® ID
• QR Code Verification
• Protective Presentation Case
• Gemdrop® Lifetime Authenticity Guarantee

Gem Specifications

• Gem: Moissanite Space Diamond
• Mineral: Silicon Carbide (SiC)
• Shape: Round
• Cut: Round Brilliant
• Size: 15 mm
• Carat Weight: ~12 ct
• Colour Grade: D
• Clarity Grade: VVS1
• Hardness: 9.25–9.5 (Mohs)
• Refractive Index: 2.65–2.69
• Dispersion: 0.104
• Certification: GRA Certified
• Verification: Gemdrop® Scientific Verification
• Authenticity: Gemdrop® Lifetime Authenticity Guarantee

Scientifically Verified. Ethically Created. Lifetime Guaranteed.