15 Carat G SI1 Radiant Cut Diamond Ring
The center stone is a 14.56-carat G SI1 Radiant cut natural diamond, GIA certified (Rosenberg ref. 700683). Radiant cut white diamonds above fourteen carats with near-colorless grades represent a structurally limited segment of annual GIA submissions — the combination of size, cut integrity, and color consistency narrows the field considerably at this weight threshold. The stone is set in a handmade platinum three-stone mounting flanked by a matched pair of Trapezoid-cut side diamonds totaling 2.22 carats.
GIA Color and Clarity: G and SI1
GIA grades white diamonds on a D-to-Z color scale, where D represents absolute colorlessness and grades progress toward warmer tones at Z. G falls in the near-colorless range — four grades from D — exhibiting no detectable color face-up in standard viewing conditions and presenting as optically white in any metal mounting. SI1 clarity denotes inclusions that require 10× magnification to locate; they are not visible to the unaided eye and carry no effect on light performance or structural integrity at this carat weight.
Why Radiant Cut at This Scale
The Radiant cut combines a rectangular outline with a modified brilliant facet pattern, producing light return comparable to a round brilliant while occupying a larger face-up footprint for a given carat weight. At fourteen-plus carats, the Radiant’s cropped corners reduce mechanical vulnerability at the girdle edges — a structural consideration during setting and long-term wear. The facet arrangement delivers consistent brightness across a wide table, which is the primary visual criterion for large white diamonds evaluated face-up.
Three-Stone Platinum Setting with Trapezoid Side Stones
Two Trapezoid-cut side diamonds — 2.22 carats total weight, graded G VS2 — flank the center stone in a step-cut format that provides a clean architectural frame without generating competing brilliance. The linear profile of Trapezoid cuts extends the perceived length of the center stone while maintaining proportional balance. The mounting is handmade platinum, selected for its 95% purity, density, and long-term prong retention — material properties that are particularly relevant for securing a center stone at this carat weight.
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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.