4 Carat Fancy Vivid Blue VVS2 Oval Cut Diamond Ring
The center stone is a 3.73-carat Fancy Vivid Blue VVS2 Oval cut natural diamond, GIA certified (Rosenberg ref. P-10019). Fancy Vivid Blue diamonds at this carat weight are among the rarest objects in the natural gem market — GIA grades fewer than a hundred blue diamonds of any color grade per year, and those reaching Fancy Vivid saturation above three carats represent a structurally constrained supply with no synthetic equivalent at equivalent face-up appearance. This stone belongs to that category without qualification.
GIA Color Grade: Fancy Vivid Blue
GIA grades fancy blue diamonds on a seven-step saturation scale: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, and Fancy Vivid — with Fancy Deep applied to heavily toned stones. Fancy Vivid represents the highest achievable saturation grade and requires a combination of strong hue, high chroma, and even color distribution face-up. VVS2 clarity positions the stone within the very-slightly-included range; inclusions are undetectable to the unaided eye and carry no optical consequence at this carat weight, making the grade functionally equivalent to VVS1 in face-up appearance.
Why Oval Cut for Fancy Color Diamonds
The Oval cut’s elongated brilliant facet structure serves two functions simultaneously in fancy color stones: it maximizes the face-up surface area relative to carat weight, and its modified brilliant pattern distributes color evenly across the table without the extinction zones common in rectangular step cuts. For a Fancy Vivid Blue, this means the grade reads consistently from all viewing angles — a critical factor given that blue diamond value is assessed primarily on face-up color intensity.
Platinum Solitaire Setting
The diamond is mounted in a handmade platinum solitaire. Platinum’s 95% purity and natural white tone eliminate any risk of metal color interfering with the stone’s blue face-up saturation — a relevant concern with yellow or rose gold alloys at this color grade. The prong configuration is minimized to expose maximum crown surface while securing a stone at this carat weight for long-term wear without prong fatigue.
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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.