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The Custom Tri-Cut Diamond. A new diamond cut inspired by our original silhouette, refined with additional facets to bring it to life in a completely new way.

This is more than a diamond. It is a reflection of everything we have built, and everything still to come.

Shop The Diamond

1.02 Carats | The Custom Tri- Cut Diamond by UbyKate

1.02 Carats | The Custom Tri- Cut Diamond by UbyKate

$4,070.00
$4,070.00
1.03 Carats | The Custom Tri- Cut Diamond by UbyKate

1.03 Carats | The Custom Tri- Cut Diamond by UbyKate

$4,070.00
$4,070.00
2.03 Carats | The Custom Tri- Cut Diamond by UbyKate

2.03 Carats | The Custom Tri- Cut Diamond by UbyKate

$8,140.00
$8,140.00
2.03 Carats | The Custom Tri- Cut Diamond by UbyKate

2.03 Carats | The Custom Tri- Cut Diamond by UbyKate

$8,140.00
$8,140.00
3.02 Carats | The Custom Tri- Cut Diamond by UbyKate

3.01 Carats | The Custom Tri- Cut Diamond by UbyKate

$12,210.00
$12,210.00
3.02 Carats | The Custom Tri- Cut Diamond by UbyKate

3.02 Carats | The Custom Tri- Cut Diamond by UbyKate

$12,210.00
$12,210.00
4.02 Carats | The Custom Tri- Cut Diamond by UbyKate

4.02 Carats | The Custom Tri- Cut Diamond by UbyKate

$16,280.00
$16,280.00
4.02 Carats | The Custom Tri- Cut Diamond by UbyKate

4.03 Carats | The Custom Tri- Cut Diamond by UbyKate

$16,280.00
$16,280.00
5.03 Carats | The Custom Tri- Cut Diamond by UbyKate

5.03 Carats | The Custom Tri- Cut Diamond by UbyKate

$20,350.00
$20,350.00
The Tri- Cut Diamond Duet Ring - Yellow Gold | UbyKate

The Tri- Cut Diamond Duet Ring - Yellow Gold | UbyKate

from $29,215.00
from $29,215.00
The Tri- Cut Diamond Duet Ring - Rose Gold | UbyKate

The Tri- Cut Diamond Duet Ring - Rose Gold | UbyKate

from $29,215.00
from $29,215.00
The Tri- Cut Diamond Duet Ring - White Gold | UbyKate

The Tri- Cut Diamond Duet Ring - White Gold | UbyKate

from $29,215.00
from $29,215.00
The Tri- Cut Diamond Ring - 18ct Yellow Gold | UbyKate

The Tri- Cut Diamond Ring - 9ct Yellow Gold | UbyKate

from $7,870.00
from $7,870.00
The Tri- Cut Diamond Ring - 18ct Yellow Gold | UbyKate

The Tri- Cut Diamond Ring - 18ct Yellow Gold | UbyKate

from $9,995.00
from $9,995.00
The Tri- Cut Diamond Ring - 9ct Rose Gold | UbyKate

The Tri- Cut Diamond Ring - 9ct Rose Gold | UbyKate

from $7,870.00
from $7,870.00
The Tri- Cut Diamond Ring - 18ct Rose Gold | UbyKate

The Tri- Cut Diamond Ring - 18ct Rose Gold | UbyKate

from $9,995.00
from $9,995.00
The Tri- Cut Diamond Ring - 9ct White Gold | UbyKate

The Tri- Cut Diamond Ring - 9ct White Gold | UbyKate

from $7,870.00
from $7,870.00
The Tri- Cut Diamond Ring - 18ct White Gold | UbyKate

The Tri- Cut Diamond Ring - 18ct White Gold | UbyKate

from $9,995.00
from $9,995.00

A diamond like you’ve never seen

After 24 years in the making, our signature Tri-Cut has evolved into something entirely new - now officially certified by the International Gemological Institute. Designed by Kate Sutton, this proprietary diamond cut enhances brilliance, fire, and individuality beyond traditional shapes.

A true expression of craftsmanship and legacy, the Custom Tri-Cut Diamond is a design that is entirely our own - created to last forever.

Learn More >