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Exceptional size in the world's most beloved cut — the 6.65ct DEW White Moissanite Round Solitaire Ring in 18K Gold Vermeil on 925 Sterling Silver, GRA certified. A 6.65ct round brilliant moissanite sits approximately 12mm in diameter — a truly commanding presence on any hand.
At 6.65ct DEW, the round moissanite measures approximately 11.9–12.1mm in diameter. For context: a standard US quarter coin is 24mm, so this stone is roughly half the diameter of a quarter. In fine jewelry terms, 6ct+ rounds are categorically "statement" sized — significantly above the national average engagement ring size of 1–1.5ct. The stone will produce refracted light visible across a room under standard indoor lighting.
For stones above 5ct DEW, prong count becomes important — more prongs (6 rather than 4) distribute the stone's weight and reduce the risk of loss if a single prong tip chips. A high-profile solitaire setting maximises light exposure from all angles. A low-profile setting is better for active lifestyles as the stone sits closer to the hand and is less vulnerable to impact. GemHub & Co. solitaire rings for large stones are set in 6-prong configurations to ensure the stone is safely secured.
✓ Free worldwide insured shipping ✓ 30-day easy returns ✓ Lifetime exchange ✓ GRA certificate included ✓ Factory-direct pricing
Free Worldwide Shipping — Complimentary on all orders, no minimum required.
Processing — Orders ship within 24–48 hours. Made-to-order pieces require 10–15 business days.
Delivery — 7–10 business days via FedEx, DHL, or equivalent. Fully insured & trackable.
Duties & Taxes — Import duties and local taxes (where applicable) are the buyer's responsibility.
Signature Required — High-value shipments require an adult signature on delivery.
Every piece comes with a genuine EGL / IGI / GIA certificate of authenticity, verifying the quality of your stone. Verify your certificate here →
Note: Our products are handcrafted and personalised for your delight, hence a weight variance is expected.
We make every ring to order — we are the factory. Custom sizes and personalisations add just a few days.
Customise this piecePair with matching pieces from the same collection
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4.20 ct DEW White Moissanite Stud Earrings Gold Vermeil Bright Shine Gift for Her
7.80 ct DEW Off White Moissanite Stud Earrings Gold Vermeil Gift for Special Event
8 ct DEW Off-White Treated Moissanite Stud Earring Gold Vermeil Certified Sparkling
5 ct DEW White Moissanite Dangler Earrings Gold Vermeil Certified Beautiful
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