20 Carat I I1 Radiant Cut Diamond Ring
The center stone is a 20.55-carat I color I1 clarity Radiant cut natural diamond, GIA certified (Rosenberg ref. 700635). At this scale, Radiant cut diamonds exceeding 20 carats represent a structurally rare classification — annual GIA submissions at this weight threshold account for a fraction of a percent of all certified stones, and examples reaching this mass with retained integrity are rarely encountered in the primary market.
GIA Color and Clarity: I Color, I1 Clarity
GIA grades white diamond color on a scale from D (colorless) through Z (light yellow or brown). I color falls within the near-colorless range, producing a face-up appearance that reads predominantly white under standard viewing conditions, with subtle warmth detectable only through direct side-by-side comparison against higher grades. I1 clarity indicates inclusions potentially visible to a trained eye under direct lighting; at 20-plus carats, inclusions are distributed across a significantly larger crystal volume, and their face-up visual impact is proportionally reduced compared to an I1 stone in a smaller format.
Why Radiant Cut at Extreme Carat Weight
The Radiant cut’s modified brilliant facet pattern distributes light return across the entire table rather than concentrating it in defined reflection lanes — a meaningful structural advantage at this scale. For a stone exceeding 20 carats, this facet architecture minimizes the perceptibility of inclusions while sustaining consistent brightness face-up. The rectangular profile also distributes mechanical load across a larger girdle surface, providing structural stability that step cuts cannot replicate at equivalent carat weight.
Platinum Micropavé Setting
The stone is mounted in a handmade platinum setting featuring micropavé diamond coverage along the shank. Micropavé involves setting very small diamonds in closely spaced bezel-drilled seats, creating a continuous surface of brilliance that frames the center without generating competing visual mass. Platinum is standard for settings of this caliber — its 95% elemental purity, high density, and long-term prong retention ensure structural security for a center stone of this significance over decades of wear.
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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.