Cushion Lab-Grown Diamond Engagement Rings
Explore cushion-cut lab-grown diamond engagement rings with IGI-certified diamonds and free shipping across Australia. Choose a design below and customise it in our ring builder, or work directly with Brie to create your own.
Mara
Cushion solitaire
from$898
Samara
Cushion halo
from$1,211
Ahri
Cushion solitaire with hidden halo
from$1,111
Camila
Cushion halo with 3/4 pavé band
from$1,553
We design custom engagement rings
“The ring turned out absolutely beautiful, even better than I imagined.”
Alejandro
Adele
Elongated cushion solitaire
from$898
River
Cushion and pear three stone
from$1,190
Why choose Lily Dia for your cushion-cut ring?
Free custom design
Start with one of our rings or bring your own idea. Design revisions are included, so we can work through the details together.
Personal support from Brie
You work directly with Brie, by video call or email, from choosing your cushion diamond to approving your design.
Free shipping across Australia
Your finished ring arrives fully insured and tracked, with updates along the way.
Certified cushion-cut diamonds
Our cushion-cut lab-grown diamonds come with an IGI grading report. GIA-graded diamonds are available on request. We check every diamond before it is set.
Learn about diamond certification
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 to order
Insured, fast shipping
Cushion cut diamond guide
Compare cushion proportions, crushed-ice sparkle, elongated cuts and setting choices.
Cushion lab-grown diamond engagement ring FAQs
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!”
