A Promise, Perfected

Princess Cut Amethyst Engagement Rings

An amethyst engagement ring in a princess cut sets a square purple stone at the center, with crisp corners and plenty of sparkle. Every ring holds a natural, treated amethyst. Choose a solitaire, halo, pave, three stone, split shank or vintage design, in white, yellow or rose gold, platinum, or Silvadium, a tarnish-resistant sterling silver.

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

Buying guide

About amethyst

Amethyst is the purple variety of quartz and the February birthstone. It rates 7 on the Mohs hardness scale, hard enough for everyday rings with sensible care: take it off for heavy work and keep it away from long, strong sunlight and high heat, which can fade the color over time. A princess cut amethyst ring shows the stone's color evenly across its square face.

Picking a setting style

  • Solitaire: the amethyst alone on a plain or sculpted band, many with bypass or double claw prongs.
  • Pave and side stones: lab-grown diamond accents along the band, the most common choice here.
  • Halo and double halo: a frame of lab-grown diamonds that makes the center look larger.
  • Three stone and baguette sides: stones flanking the center for a wider look.

Princess corners are the most exposed part of the stone, so many designs hold them with claw prongs.

Carat weight, metal and price

Every design offers 1 to 9 carats total weight. Gold comes in 10K, 14K or 18K; platinum is the heaviest and most durable choice, and silver is the lightest on the budget. Rings start under $300, and most are between about $750 and $1,050.

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.