67 Carat D-F Flawless-VS2 Radiant Cut Diamond Riviera Necklace
The matched set of Radiant cut natural diamonds totals 66.86 carats across the necklace, spanning a color range of D through F and a clarity range of Flawless through VS2, all GIA certified (Rosenberg ref. 700791). A continuous line of calibrated Radiant cuts at this aggregate weight places this necklace among the rarest expressions of the riviera format — assembling a sequenced set of colorless Radiant cuts exceeding 60 total carats requires years of sourcing across primary and secondary markets, as stones of this grade and shape rarely become available in the quantities and diameter tolerances a continuous-line necklace demands.
GIA Color and Clarity: D–F Colorless, Flawless to VS2
GIA grades white diamond color on a D-to-Z scale, where D, E, and F define the colorless range — stones in which no body color is detectable under standardized grading conditions. Across the clarity spectrum, Flawless and Internally Flawless grades indicate an absence of inclusions visible under 10× magnification, while VS2 marks the lower boundary of the very-slightly-included tier, where inclusions remain invisible to the unaided eye and have no effect on light performance regardless of carat weight.
Why Radiant Cut in a Continuous-Line Format
The Radiant cut combines a rectangular outline with a modified brilliant facet pattern — a structure that generates higher scintillation than step-cut alternatives such as the emerald or Asscher while preserving the linear silhouette that a riviera necklace requires. In a continuous-line format, the Radiant’s facet arrangement produces consistent face-up brilliance across every stone in sequence, avoiding the flat reflective zones that step cuts can exhibit when the necklace moves against the collarbone.
Handmade Platinum Riviera Construction
The necklace is handmade in platinum, the standard metal for investment-grade diamond jewelry due to its density, 95% purity, and long-term resistance to prong wear. Each diamond occupies an individual platinum mount along a calibrated continuous setting, engineered to create an unbroken visual line across the décolletage. Precise girdle-diameter matching across the full 66.86-carat set is a tolerancing requirement that grows exponentially more demanding as total stone count and aggregate weight increase.
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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.