★ free shipping worldwide on orders $250+ ★


Your Cart is Empty

213 total reviews

Custom Triangle Diamond Ring in Gold

Design your custom engagement ring with the trillion cut or triangle diamond of your choice. Your ethical dream ring, made to order, just for you.


  • 18 karat yellow, rose or white gold
  • Our signature ethical gold: mercury-free and mined by indigenous women who are paid more than the international gold price
  • Trilliant cut diamond of your choice
  • Made to order in 8 to 12 weeks

Choose your diamond to see more photos.

Email us for help and personal concierge service

Custom Triangle Diamond Ring

Design your own modern diamond engagement ring or self love ring.

A triangle cut diamond has a three-point shape. This angular diamond cut gives a modern and contemporary look. Trillion cut diamonds have slightly more curved edges and more facets than the classic triangle cut. Trilliant cut diamonds tend to look a little larger than round diamonds of the same weight.

Be aware the corners of this unique diamond cut are more susceptible to bumps and other impact, making them more fragile than the brilliant round. 

Choose a trilliant cut diamond that speaks to you and let's get started on your triangle diamond engagement ring. 

We’re making this for you, from scratch

Your custom triangle diamond ring will be made to order with the trilliant diamond of your choice in around 8 to 12 weeks. You'll receive a photo before we ship it out. The price is for one finished ring in 18 karat eco gold.

Since your triangle cut diamond ring will be made especially for you, we don’t accept returns on custom orders. You can read our return policy here.

Your custom ring design


You can choose from 18 karat yellow gold, rose gold or white gold. We use 18 karat ethical gold, which is mined and processed with traditional, mercury free, low impact practices by indigenous Dayak women in Central Kalimantan, Indonesian Borneo, who receive fair pay. Our white gold is rhodium plated.

Ring size

We use US ring sizes.


You can choose between a bezel setting, which has the gold all the way around the stone and a prong setting, where small claws hold the stone. Not sure which setting is right for you? Compare bezel vs prong setting here.

Diamonds in band

Want to add some extra sparkle? Pave diamonds in the ring band can really elevate the look of your ring. Choose between salt and pepper diamonds (the rebellious budget option) or white diamonds (G-H color, SI clarity).

Engraving is on us

We offer complimentary engraving on the inside of your ring to personalize it even more. Our team will reach out to you after your purchase for details.

Conflict free diamonds

The diamonds used in this jewelry have been purchased from legitimate sources not involved in funding conflict and in compliance with United Nations resolutions. Based on personal knowledge and/or written guarantees provided by the supplier of these diamonds they are conflict free and mined in accordance with the Kimberley Process.

Gardens of the Sun goes beyond conflict free. Since our sourcing policy came into effect in November 2018 we only purchase diamonds from known origins. We avoid sourcing diamonds from Angola, Democratic Republic of Congo, Ivory Coast, Liberia, Russia (last purchased in 2019), Sierra Leone and Zimbabwe.

Is it an engagement ring?

Are you planning on using this as an engagement ring? Ask us to keep the exact measurements of your diamond. This way, if you decide to also get a wedding band or nesting band from us, we can help make sure it fits perfectly.

Need any help?

Want advice on which stone to choose, some guidance with the design or a mock-up before taking the plunge? Our customer happiness team is pretty awesome! Contact them for help.

Any special requests for your ring band, stone angle or prong placement? Write them down in the box at checkout.

Triangle diamonds for you to choose from

  • DBT1 - 0.08 ct - Measures 3.0 x 3.54 x 1.38 mm. Triangular brilliant cut diamond from Australia. A champagne salt and pepper look. . Laser inscribed and comes with certificate of origin. 
  • DBT2 - 0.06 ct - Measures 2.67 x 2.97 x 1.49 mm. Triangular brilliant cut diamond from Australia. This tiny trillion diamond has a pale champagne color. Laser inscribed and comes with certificate of origin.
  • DBT4 - 0.31 ct - Measures 5.54 x 6.05 x 1.58 mm. Triangle diamond from Kalimantan, Indonesia. Ready to point you in the most amazing direction, and so bright it will light your way. One of my personal favorites! Ethically sourced from artisanal diamond miners in Indonesian Borneo. Comes with a LPSB (government owned lab) diamond memo, signed by a GIA graduate gemologist.
  • DBT6 - 0.45 ct - Measures 4.65 x 4.31 x 3.21 mm. Trillion cut diamond from Kalimantan, Indonesia. Little salt and pepper trillion diamond for your designing pleasure. Ethically sourced from artisanal diamond miners in Indonesian Borneo. Graded as faint yellow (L) color, SI2 clarity and good cut grade. Comes with a diamond certificate from SKGL, a women-owned lab in South Kalimantan, graded by a female GIA graduate gemologist.

Customer Reviews

Based on 213 reviews
Jenna S. (Georgia, United States)
Best experience EVER

This was the best experience I’ve ever had buying jewelry. The customer service is IMMACULATE! They even offered to hold my ring while I went on a trip to make sure it arrived while I was home.

Then we get to the ring and it is even more gorgeous than I could have imagined. The quality is immaculate. The ring box is beautiful and it includes a tiny flower which is the best little touch!! I will absolutely be purchasing more from Gardens of the Sun

Cassandra O. (Quebec, Canada)

Your team treated me like family and gave me a wonderful experience, my engagement ring is better than I could ever imagine because of you guys I'm so grateful xx


Ciara R. (Nevada, United States)
The perfect engagement ring!

My fiancé and I picked out my engagement ring from Gardens of the Sun and I couldn’t be happier with it. The process of picking out the stone, setting and band was so much fun, and the team at Gardens of the Sun was so helpful in sending pictures and mock-ups! I’ve received so many compliments on my ring, and it’s so beautiful and unique!

Heléne (Kronoberg County, Sweden)
Easy process and good advice

I have only the best to say about the company and the special piece for myself that I created with them. It is every bit so special and beautyful as I could hope and expect. And the customer-service is flawless with quick and easy contacts and good advice (especially since I got second thoughts about wich size to choose).