8 Carat Lab-Grown Diamond Rings
Eight carats, held low and steady. These 8 carat lab-grown diamond rings ship with the stone secured and its price counted in. Select the cut first, then white, yellow or rose gold or platinum, on the product page. Slim shanks balance a stone of this size: a plain solitaire, pavé shoulders, or a halo hidden beneath the stone.
$14,199 $28,398
$14,199 $28,398
$14,199 $28,398
$14,199 $28,398
$14,199 $28,398
$14,199 $28,398
$13,769 $27,538
$13,769 $27,538
$13,769 $27,538
$13,769 $27,538
$13,769 $27,538
$13,769 $27,538
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Which shape for eight carats
An 8-carat round spans about 12.4 mm and throws strong, even sparkle. An oval or marquise stretches the weight along the finger; a cushion or radiant gives a broad, bright square; a heart makes a clear motif at this scale. On some designs, princess, pear and emerald cuts are offered too, and an emerald cut shows wide, glassy step facets.
Keeping the setting quiet
- Solitaire: plain metal that lets the stone stand alone.
- Pavé shoulders: tiny lab-grown diamonds set into the upper shank.
- Hidden halo: small stones gathered under the center, sending light up from below.
Metal strong enough for the stone
Platinum is the hardest-wearing choice for prongs holding an 8-carat center. White gold gives a similar white look; yellow and rose gold add warmth around the stone. Bands run about 1.8–2.5 mm wide, so the center stays the focus.
Wearing an eight-carat ring
At this size the stone is exposed on every side. Remove the ring for sport, heavy chores and sleep, and store it alone in a lined box so it can't scratch other pieces. Book a prong inspection twice a year, and clean often: a film of lotion dims a large face quickly.
8 Carat Lab-Grown Diamond Rings: Common Questions
How much does an 8 carat lab-grown diamond ring cost?
Rings here start at about $9,000, and most sit between about $13,900 and $14,100 for the finished ring with its 8-carat lab-grown center in the lowest-priced metal. Shape and metal move the figure. Grown stones at eight carats sit far below mined prices, but expect little resale value.
How big is an 8 carat diamond?
About 12.4 mm across for a round, roughly as wide as a typical ring finger. An 8-carat oval runs near 16 x 11 mm, and a cushion about 11.5 mm square. Exact measurements depend on the cut, and its IGI or GIA report lists them.
Is 8 carats a big ring?
Yes, very. An 8-carat center spans the finger and rises well above the hand, so the ring makes a strong statement. The plain solitaire puts all attention on the stone, while pavé shoulders or a hidden halo add sparkle without making the ring look heavier.


























