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.
What diameter is a 6.65ct round moissanite?
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.
How do you choose a ring setting for a very large round moissanite?
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 solitaire rings for large stones are set in 6-prong configurations to ensure the stone is safely secured.
Specifications
- Stone: White Moissanite
- Size: 6.65ct DEW (Diamond Equivalent Weight)
- Cut: Round Brilliant
- Metal: 18K Gold Vermeil on 925 Sterling Silver
- Certification: GRA Certified
GEMHUB Promise
✓ Free worldwide insured shipping ✓ 30-day easy returns ✓ Lifetime exchange ✓ GRA certificate included ✓ Factory-direct pricing
Details: Crafted in Gold Vermeil.
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