Elongated Cushion Cut Lab Grown Diamonds
A cushion stretched long — pillow-soft corners with elongating proportions and a romantic glow.
What is an elongated cushion cut diamond?
An elongated cushion (also called a long cushion) is a cushion cut stretched lengthwise — a soft, pillow-shaped rectangle with rounded corners. It keeps the cushion's warm, romantic glow but adds a flattering, finger-lengthening shape, making it a favourite for shoppers who want soft edges without a boxy look.
Crushed ice vs. chunky
Cushions come in two sparkle styles. Crushed-ice cushions scatter light into a glittery, shimmering look; chunky (or 'old-style') cushions show larger, bolder flashes. Neither is better — it's a matter of taste. Browse a few to see which sparkle you prefer.
What to look for in an elongated cushion
- Ratio — elongated cushions typically run about 1.20–1.50; higher reads longer and slimmer.
- Sparkle style — decide between crushed-ice shimmer and chunky flashes.
- Even corners — the four rounded corners should match for a balanced pillow shape.
Use the filters above to set carat, colour, and clarity.
Elongated cushion engagement rings
The soft shape suits halos, solitaires, and vintage-inspired settings beautifully, and the elongated proportions flatter the finger. Choose your loose stone here, then build it into the ring of your choice.
Why buy an elongated cushion from Stienhardt
Every Stienhardt cushion is independently certified by IGI or GIA, graded for the full 4Cs, and conflict-free — all backed by free 30-day returns.
Long Cushion Cut Lab Grown Diamonds — frequently asked questions
What is an elongated cushion cut diamond?
A cushion cut stretched lengthwise — a soft, pillow-shaped rectangle with rounded corners, keeping the cushion's glow while flattering the finger.
What's the difference between a cushion and an elongated cushion?
A standard cushion is closer to square; an elongated (long) cushion is stretched into a rectangle for a longer, finger-lengthening look.
What's the difference between crushed-ice and chunky cushions?
Crushed-ice cushions scatter light into a glittery shimmer; chunky cushions show larger, bolder flashes. It comes down to which sparkle you prefer.
What ratio is best for an elongated cushion?
Elongated cushions typically run about 1.20–1.50. Higher ratios look longer and slimmer.
Are elongated cushion lab grown diamonds real diamonds?
Yes — they're real diamonds, chemically and optically identical to mined stones, and recognized as diamonds by the FTC.
Are elongated cushion lab grown diamonds certified?
Yes. Every Stienhardt cushion is independently certified by IGI or GIA and graded for the full 4Cs.
Do elongated cushions look bigger?
The elongated outline gives a longer face-up look than a square cushion of the same carat and flatters the finger.
What setting suits an elongated cushion?
Halos, solitaires, and vintage-inspired settings all complement its soft, pillowy shape.
Can I set an elongated cushion into an engagement ring?
Absolutely. Choose your loose stone, then pick a setting and we'll mount it for you.
What is your return policy?
Free 30-day returns on diamonds and jewelry.