3 Carat Lab-Grown Diamond Engagement Rings

Dreaming of a ring that dazzles? Our 3 carat diamond engagement rings offer an impressive display of brilliance and luxury. This size is perfect for those who desire a bold statement piece that captures attention and admiration. Each ring in our collection is carefully crafted to highlight the beauty of lab-grown diamonds, making them an ethical and stunning choice. 

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Titan elongated cushion lab-grown diamond wide-shank solitaire ring in solid gold Titan elongated cushion lab-grown diamond wide-shank ring in solid gold, side view

Titan Elongated Cushion Wide Shank Solitaire Diamond Ring

HK$13,880.00 HK$31,880.00
  • +4
Vera oval lab-grown diamond side-stone ring with marquise accents in solid gold Vera Oval Half-Coverage Side Stone Diamond Ring

Vera Oval Half-Coverage Side Stone Diamond Ring

HK$12,880.00 HK$30,880.00
  • +4
June marquise-cut lab-grown diamond solitaire ring with pave band in solid gold, front view June marquise-cut lab-grown diamond solitaire ring, side view showing pave shoulders

June Marquise Classic Solitaire Pavé Diamond Ring

HK$11,880.00 HK$29,880.00
  • +4
Vera pear-cut lab-grown diamond side-stone ring with marquise accents in solid gold Vera pear lab-grown diamond side-stone ring with marquise accents in solid gold, side view

Vera Pear Half-Coverage Side Stone Diamond Ring

HK$12,880.00 HK$30,880.00
  • +4
Titan oval lab-grown diamond wide-shank solitaire ring in solid gold Titan oval lab-grown diamond wide shank ring, side profile

Titan Oval Wide Shank Solitaire Diamond Ring

HK$13,880.00 HK$31,880.00
  • +4
Titan radiant lab-grown diamond wide-shank solitaire ring in solid gold Titan radiant lab-grown diamond wide-shank ring, macro detail

Titan Radiant Wide Shank Solitaire Diamond Ring

HK$13,880.00 HK$31,880.00
  • +4
June Marquise Classic Solitaire Diamond Ring | 2 Carat in yellow gold with a marquise-cut lab grown diamond set in a six-prong setting. Side view of June Marquise Classic Solitaire Diamond Ring | 2 Carat in yellow gold showing elevated marquise diamond and sleek band profile.

June Marquise Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4

Want it your way?

Any piece of Alya Stone jewelry can be customised just for you.

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June radiant-cut lab-grown diamond classic solitaire ring in solid gold, front view June radiant-cut lab-grown diamond classic solitaire ring, side view

June Radiant Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June tilted pear-cut lab-grown diamond classic solitaire ring in solid gold, front view June tilted pear-cut lab-grown diamond classic solitaire ring, side view showing the angled pear

June Tilted Pear Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June pear-cut lab-grown diamond solitaire ring in solid gold June pear lab-grown diamond solitaire ring, side profile

June Pear Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June asscher-cut lab-grown diamond classic solitaire ring in solid gold, front view June asscher-cut lab-grown diamond classic solitaire ring, side view

June Asscher Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June cushion-cut lab-grown diamond solitaire ring in solid gold June cushion lab-grown diamond solitaire ring, side profile

June Cushion Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June east-west oval lab-grown diamond solitaire ring in solid gold June oval east-west lab-grown diamond ring, side view

June Oval East-West Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June oval lab-grown diamond solitaire engagement ring in solid gold June oval lab-grown diamond solitaire ring, side profile

June Oval Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June emerald-cut lab-grown diamond solitaire ring in solid gold June emerald-cut lab-grown diamond solitaire ring, side profile

June Emerald Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
June round brilliant lab-grown diamond solitaire ring in solid gold June round lab-grown diamond solitaire ring, side profile

June Round Classic Solitaire Diamond Ring

HK$9,880.00 HK$27,880.00
  • +4
Mira oval half-bezel lab-grown diamond solitaire ring in solid gold Mira oval half-bezel lab-grown diamond solitaire ring in solid gold, side view

Mira Oval Half Bezel Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
Bianca elongated-cushion lab-grown diamond solitaire ring with ribbed band in solid gold Bianca Elongated Cushion Ribbed Band Solitaire Diamond Ring

Bianca Elongated Cushion Ribbed Band Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
  • +4
Bianca round brilliant lab-grown diamond solitaire ring with ribbed band in solid gold, front view Bianca Round Ribbed Band Solitaire Diamond Ring

Bianca Round Ribbed Band Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
  • +4
Bianca cushion-cut lab-grown diamond solitaire ring with ribbed band in solid gold, front view Bianca cushion-cut lab-grown diamond solitaire ring, side view showing the ribbed band

Bianca Cushion Ribbed Band Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
  • +4
Bianca marquise-cut lab-grown diamond solitaire ring with ribbed band in solid gold, front view Bianca Marquise Ribbed Band Solitaire Diamond Ring

Bianca Marquise Ribbed Band Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
  • +4
Bianca oval lab-grown diamond solitaire ring with ribbed band in solid gold Bianca Oval Ribbed Band — on-model

Bianca Oval Ribbed Band Solitaire Diamond Ring

HK$10,880.00 HK$28,880.00
  • +4
Remi tilted pear lab-grown diamond bezel solitaire ring in solid gold Remi tilted pear lab-grown diamond bezel ring in solid gold, side view

Remi Tilted Pear Bezel Solitaire Diamond Ring

HK$12,880.00 HK$30,880.00
  • +4

Three carats is a statement, and lab-grown is what makes it a reasonable one — a 3.0-carat stone with a mined origin would sit in a different price universe entirely. Every ring in this collection centres on a full 3.0-carat diamond, IGI certified, with identical brilliance and hardness to mined, so the scale comes without compromise.

A three-carat centre stone rewards a setting that lets it breathe: a cathedral mount to lift it into the light, a hidden halo for extra fire, or a clean solitaire that lets the carat speak for itself. Elongated cuts — oval, emerald, marquise — carry three carats with particular elegance across the finger. Each ring is set in solid recycled gold and made to order, your stone set by hand.

How large is the centre stone?

Cathedral and hidden-halo settings flatter bigger centre stones; a low solitaire keeps the focus entirely on the diamond.

What setting suits a larger stone?

Cathedral and hidden-halo settings flatter bigger centre stones; a low solitaire keeps the focus entirely on the diamond.

Are lab-grown diamonds real diamonds?

Yes. A lab-grown diamond is chemically, physically and optically identical to a mined one — same hardness, same fire, same sparkle. The only difference is origin: ours are grown rather than dug, which means a cleaner provenance and far more carat for your budget.

How long does my ring take to make?

Each ring is made to order. Please allow 2–3 weeks before it ships — your stone, set by hand, in the metal and setting you choose.