
Thick band engagement rings
Chunky engagement rings on our 3mm band, the widest we make in gold or platinum, so the band carries as much of the look as the stone. Every ring opens at 3mm, and you can choose 2.5mm or 2mm before you order.

Hailey
4 claw round solitaire
from$1,262

Kendall
Round bezel set solitaire
from$1,512

Monet
Round solitaire with hidden halo
from$1,477
We design custom engagement rings
“The ring turned out absolutely beautiful, even better than I imagined.”
Alejandro

Isabella
Oval solitaire
from$1,262

Katy
Oval east-west solitaire
from$1,262

Blake
Oval bezel set solitaire
from$1,512

Sophia
Oval solitaire with hidden halo
from$1,477

Celine
Emerald solitaire
from$1,262
We design custom engagement rings
“She helped us create an engagement ring we will cherish forever.”
Jonathon

Edyn
Emerald east-west solitaire
from$1,262

Karlie
Emerald bezel set solitaire
from$1,512

Ivy
Emerald solitaire with hidden halo
from$1,477

Gracie
Radiant solitaire
from$1,262

Billie
Radiant east-west solitaire
from$1,262

Zarah
Radiant solitaire with hidden halo
from$1,477

Zendaya
Radiant bezel set solitaire
from$1,512

Millie
Pear bezel set solitaire
from$1,512

Rhay
Pear solitaire
from$1,262

Adele
Elongated cushion solitaire
from$1,262

Mara
Cushion solitaire
from$1,262

Ahri
Cushion solitaire with hidden halo
from$1,477

Margot
Marquise solitaire
from$1,262

Gigi
Marquise bezel set solitaire
from$1,512

Taylor
Marquise solitaire with hidden halo
from$1,477

Ana
Princess solitaire with hidden halo
from$1,477

Skye
Princess solitaire
from$1,262
How wide is a 3mm band?
3mm is the widest band we make, half as wide again as our standard 2mm, and at that width the band stops framing the stone and becomes part of the look. It carries the most metal of any width, holds its shape through decades of daily wear, and balances a centre stone of 2 carats or more.

Certified stones
LILY DIA uses the highest quality certified stones from only trusted providers. We hand check every stone to make sure it meets our standards.

Compare nearby ring styles
Our approach
We have a very hands-on bespoke process. You'll work with Brie to design and craft your dream ring. We make sure that this experience feels very special and tailored to you.
Consultation
Unlimited revisions
Made by hand
Insured, fast shipping
What couples say
“My boyfriend and I had the best experience at Lily Dia designing my dream engagement ring… My ring is gorgeous, I am blown away.”
“She took time to talk through the options with no pressure at all, and communication was excellent throughout the whole process! A 10/10, would recommend.”
“We cannot recommend Brie enough! She made the whole custom ring process amazing with her expert knowledge, incredible patience and ensuring the ring was perfect!”
“Had such a great experience! Highly recommend. Brie understood my wants/needs and really delivered. So happy!”
“You accompanied me throughout the entire process and were my partners in making my engagement ring come to life… The ring turned out absolutely beautiful, even better than I imagined.”
“Thanks for having so many phone calls to get it right, but you did and it was a great experience… their attention to detail is great and the quality of the ring was so high.”
“Brie was amazing. Process was seamless. Ring is stunning. Highly recommend!”









