Thanksgiving Sale20% off everythingEnds Monday 12 OctShop the sale
OnCarat

Lab-grown diamonds · IGI certified

Diamonds, priced by the carat

The same carbon, the same crystal, the same hardness and the same fire as any diamond on earth — chosen at the top of the colour and clarity scale, cut and set by hand in 14k or 18k white, yellow or rose gold.

Shop engagement rings Rings for men See everything

Lattice Round Tennis Bracelet, 3.3 ct
Lattice Round Tennis Bracelet, 3.3 ct
3.3 ct in 55 stones, 6.24 g
$3,689 CAD $2,951 CAD
Firn Oval Hoop Earrings
Firn Oval Hoop Earrings
0.9 ct in 2 stones, 3.12 g
$1,286 CAD $1,029 CAD
Firn Emerald Solitaire Necklace
Firn Emerald Solitaire Necklace
2.2 ct in 7 stones, 3.70 g
$2,369 CAD $1,895 CAD
Sundog Oval & Emerald Pendant
Sundog Oval & Emerald Pendant
2 ct in 2 stones, 2.90 g
$2,062 CAD $1,649 CAD
Rime Marquise Halo Ring
Rime Marquise Halo Ring
1.23 ct in 33 stones, 2.98 g
$1,504 CAD $1,203 CAD
Lattice Oval Bezel Tennis Bracelet
Lattice Oval Bezel Tennis Bracelet
4 ct in 51 stones, 5.74 g
$4,112 CAD $3,289 CAD
Firn Round Dangle Earrings, 1.22 ct
Firn Round Dangle Earrings, 1.22 ct
1.22 ct in 26 stones, 2.75 g
$1,451 CAD $1,161 CAD
Rime Oval Cluster Halo Necklace, 2.3 ct
Rime Oval Cluster Halo Necklace, 2.3 ct
2.3 ct in 63 stones, 3.88 g
$2,479 CAD $1,983 CAD
Sundog Pear & Emerald Pendant, 2 ct
Sundog Pear & Emerald Pendant, 2 ct
2 ct in 2 stones, 2.91 g
$2,064 CAD $1,651 CAD
Rime Oval Open Halo Ring
Rime Oval Open Halo Ring
1.5 ct in 32 stones, 2.72 g
$1,654 CAD $1,323 CAD
Cairn Oval Multi-Shape Bangle Classic Bracelet
Cairn Oval Multi-Shape Bangle Classic Bracelet
3.5 ct in 7 stones, 10.14 g
$4,608 CAD $3,686 CAD
Rime Round Dangle Halo Earrings, 1.32 ct
Rime Round Dangle Halo Earrings, 1.32 ct
1.32 ct in 60 stones, 2.67 g
$1,510 CAD $1,208 CAD
Firn Round Bezel Halo Necklace
Firn Round Bezel Halo Necklace
2.35 ct in 3 stones, 4.26 g
$2,591 CAD $2,073 CAD
Sundog Oval Pendant
Sundog Oval Pendant
2 ct in 2 stones, 2.91 g
$2,064 CAD $1,651 CAD
Basalt Emerald Solitaire Ring
Basalt Emerald Solitaire Ring
0.81 ct, 6.29 g
$1,845 CAD $1,476 CAD
Lattice Radiant Tennis Bracelet
Lattice Radiant Tennis Bracelet
2.5 ct in 74 stones, 15.60 g
$4,941 CAD $3,953 CAD
Firn Drop Earrings
Firn Drop Earrings
1.63 ct in 4 stones, 2.38 g
$1,684 CAD $1,347 CAD
Firn Pear Bar Necklace, 2.7 ct
Firn Pear Bar Necklace, 2.7 ct
2.7 ct in 18 stones, 4.77 g
$2,952 CAD $2,362 CAD
Sundog Pear & Princess Pendant
Sundog Pear & Princess Pendant
2 ct in 2 stones, 3.00 g
$2,082 CAD $1,665 CAD
Sundog Oval Cluster Ring
Sundog Oval Cluster Ring
1.8 ct in 22 stones, 2.72 g
$1,877 CAD $1,502 CAD
Lattice Round Tennis Bracelet, 3 ct
Lattice Round Tennis Bracelet, 3 ct
3 ct in 88 stones, 15.60 g
$5,313 CAD $4,251 CAD
Firn Solitaire Stud Earrings, 1.93 ct
Firn Solitaire Stud Earrings, 1.93 ct
1.93 ct in 2 stones, 1.85 g
$1,802 CAD $1,442 CAD
Firn Halo Necklace
Firn Halo Necklace
2.82 ct in 9 stones, 4.75 g
$3,038 CAD $2,430 CAD
Cairn Multi-Shape Pendant
Cairn Multi-Shape Pendant
1.4 ct in 14 stones, 5.46 g
$2,120 CAD $1,696 CAD

IN THE HAND

Turn it before you decide

Photographed from every angle under one light, so what arrives is what you looked at.

CertifiedStones over 1 carat ship with their own grading certificate.
Shipped worldwideFree, insured and signed for, wherever you are.
Sized with youWe settle the size together before anything is made.

The hardest material on earth, graded at the top of the scale, cut for one person and warranted for life.

It is a diamond

Ten on the Mohs scale. Refractive index 2.42. The same crystal lattice and the same fire, graded by the same laboratories against the same criteria. No gemmologist can tell by eye.

Chosen, not yielded

A mine gives up whatever it holds. We select every stone, at D–F colour and FL–VS1 clarity. What would be rare and heavily priced in a mined stone of this size is simply the standard we work to, and the certificate says so.

Made to outlast you

Nothing sits in a case waiting. Each piece is set by hand to your size, certified, and repaired for as long as you own it.

Diamonds, priced by the carat

GET IN TOUCH

sales@oncarat.com Toronto Made to order, 10–15 days Free shipping worldwide
© 2026 OnCarat. Lab-grown diamonds, made to order.