A Promise, Perfected

1.5 Carat Princess Cut Solitaire Rings

These 1.5 carat princess cut solitaire rings come with a 1.5 carat lab-grown diamond center already set, and the price includes it. Choose platinum, or white, yellow or rose gold in 10K, 14K or 18K. Pick a plain or rounded band, a pavé band, a cathedral setting on a graduated pavé band, or a hidden halo that adds sparkle from the side.

1Choose a setting
Choose a Setting
Browse signature ring designs
2Select a diamond
Select a Diamond
Filter by shape, carat & budget
3Complete the ring
Complete the Ring
Preview & make it yours
Find Your Cut

Shop by Shape

16 rings
16 rings
Conflict-Free
Ethically sourced diamonds
Lifetime Warranty
Free cleaning & resizing
Free Shipping
30-day returns
IGI / GIA Certified
Independently graded

Keep exploring

More princess cut and solitaire rings

Buying guide

A square center on its own

A princess cut is a square brilliant with pointed corners and a lot of sparkle. As a solitaire, its clean outline is the whole design. A 1.5 carat solitaire princess cut lab-grown diamond ring has a modern, geometric look that pairs easily with a straight wedding band. Because the corners are the most exposed points, a setting with secure prongs at each corner is worth looking for, and the ring is best taken off for heavy work.

Band options

  • Plain or rounded plain bands, for the purest solitaire look
  • A pavé band lined with small lab-grown diamonds
  • A cathedral setting that rises on arches from a graduated pavé band
  • A hidden halo with pavé, showing small lab-grown diamonds from the side

The 1.5 carat figure is the princess center alone. Pavé and hidden halo details add more lab-grown diamond beyond the center.

Platinum or gold

Platinum is naturally white and dense, with a weighty feel. White gold gives a similar cool tone, while yellow and rose gold frame the square center with warmth. In gold, 10K wears hardest, 14K is the most common pick for 1.5 ct princess cut solitaire engagement rings, and 18K has the richest color.

Made to order

Each ring is made for you in 10–15 days. Shipping is free on orders over $500, returns are accepted within 30 days, and one resize is free within 60 days of delivery.