13 Carat I VS2 Round Cut Diamond Ring
The center stone is a 12.73-carat I VS2 Round brilliant cut natural diamond, GIA certified (Rosenberg ref. 95758). Round brilliants exceeding twelve carats represent a vanishingly small fraction of annual GIA submissions — crystals of sufficient size, structural integrity, and proportional viability to yield a stone at this threshold are encountered only in exceptional rough production. The diamond is part of Rosenberg’s Important Whites collection, reserved for white diamond solitaires of significant carat weight and verifiable provenance.
GIA Color and Clarity Grades: I Color, VS2 Clarity
GIA grades colorless and near-colorless diamonds on a D-to-Z scale. The I color grade falls within the near-colorless range — G through J — where trace nitrogen content introduces a body color that remains imperceptible face-up to the unaided eye, particularly once the stone is mounted in platinum. VS2 clarity places the diamond in the very-slightly-included range: the inclusion characteristics are not detectable without 10× magnification and exert no influence on light transmission or structural integrity at this carat weight.
Why Round Brilliant Cut for Large White Diamonds
The Round brilliant facet pattern — 57 or 58 facets arranged to maximize light return — is the established standard for colorless and near-colorless diamonds. At 12.73 carats, the Round brilliant’s geometry delivers consistent optical performance across the full face of the stone, producing the balanced combination of brilliance and fire that defines white diamond light performance. The cut also benefits from the most extensive body of GIA proportion research, enabling objective cut-quality assessment independent of carat weight.
Platinum Solitaire Setting
The diamond is mounted in a handmade platinum solitaire — a construction that presents the stone without side stones to divide visual attention or complicate the structural relationship between prongs and girdle. Platinum’s 950‰ purity, density, and resistance to metal fatigue make it the standard metal choice for securing stones of this carat weight over extended periods of wear. The prong configuration is calibrated to the stone’s girdle diameter, minimizing metal coverage across the crown while maintaining the long-term structural security required at this scale.
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Care
Preserve the brilliance of your diamond through proper care. We recommend professional cleaning annually and safe storage in a jewelry box or pouch. Avoid exposure to harsh chemicals and extreme temperatures. Learn more about our complete care guide for detailed maintenance and storage best practices.
Warranty
Every Rosenberg piece comes with a warranty covering craftsmanship and authenticity. Our warranty protects against manufacturing defects and ensures your diamond’s certified quality. For warranty details, claims, or to register your purchase, contact our specialists.
Delivery
Your diamond is shipped via insured, tracked delivery with full insurance coverage included. Packages are carefully packaged in premium materials and require a signature upon delivery. Review our shipping and delivery policy for complete details about timelines and handling.