40 Carat Fancy Yellow SI2 Radiant Cut Diamond Ring
The center stone is a 40.01-carat Fancy Yellow SI2 Radiant cut natural diamond, GIA certified (Rosenberg ref. 96506). Fancy Yellow Radiant cut diamonds at this weight are among the rarest configurations in the natural diamond market — GIA records fewer than a handful of submissions annually exceeding 40 carats in Fancy Yellow saturation, and at this scale the stone occupies a category where supply is structurally limited by geological occurrence alone.
GIA Color Grade: Fancy Yellow
GIA grades natural yellow diamonds along a sequential scale: Faint, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, and Fancy Deep. Fancy Yellow denotes consistent, face-up yellow saturation derived entirely from the diamond’s body color — not from fluorescence or color concentration along growth planes. SI2 clarity positions the stone in the slightly-included range; at 40 carats, the distribution of inclusions across a surface area of this magnitude typically allows for eye-clean face-up appearance, and the grade has no adverse effect on structural integrity.
Why Radiant Cut for Fancy Color at This Scale
The Radiant cut was engineered to combine the rectangular outline of a step cut with a modified brilliant facet arrangement beneath the table. For a fancy color stone, this architecture intensifies perceived color saturation face-up relative to emerald or Asscher cuts, while the crushed-ice brilliance pattern distributes light return evenly across the expanded surface area that a 40-carat stone presents. At this carat weight, the Radiant’s corner truncations also reduce vulnerability to mechanical damage along the girdle edge.
Three-Stone Setting in 18-Karat Yellow Gold with Trapezoid Side Stones
Two step-cut Trapezoid diamonds flank the center stone, their rectilinear silhouette creating a lateral frame that reinforces the Radiant’s rectangular geometry without generating competing optical activity. The mount is handmade in 18-karat yellow gold — the standard metal pairing for Fancy Yellow diamonds, as its warm reflectivity amplifies the stone’s body color through the pavilion and enhances face-up saturation in a way that platinum or white gold cannot replicate.
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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.