Grown on Earth,
Brilliant as the Stars.
Ethically created lab diamonds and moissanite, hand-set into bespoke fine jewellery on the Gold Coast — every gemstone backed by a lifetime warranty.
Find Your Piece
From ready-to-ship designs to fully bespoke commissions — every category, one place to start.
Which Stone Is Right For You?
Every gemstone we sell is internationally certified. Here's an honest look at the differences.
Lab Diamond
- Chemically identical to a mined diamond
- Same 4Cs grading, GIA/IGI certified
- Up to 40–50% less than a natural diamond
- Created, not mined — lower footprint
Natural Diamond
- Formed over billions of years underground
- Available on request, quoted per stone
- Highest resale recognition
- Widest price range by rarity
Moissanite
- Exceptional brilliance, distinct fire
- 9.25 on the Mohs hardness scale
- Most accessible price point
- Independently certified, just like our diamonds
Loved Designs
1.2ct Engagement Ring — Lab Diamond or Moissanite
5 Gemstone 2.5ct Cushion Ring
Cushion Cut 5.87ct Engagement Ring
Cushion Cut Solitaire 2.95ct Ring
The Custom Design Journey
Every custom piece follows the same considered path, from first conversation to the ring on your finger.
Consult
Tell us your vision — in person, by video, or by email.
Choose Your Stone
Lab diamond, natural diamond, or moissanite — all certified.
Approve the Design
We confirm setting, metal, and sizing before we begin.
Delivered to You
Handcrafted in 15–20 business days, insured worldwide shipping.
What Our Customers Say
"The design process was so easy and the ring arrived exactly as pictured. Couldn't be happier."
"Excellent communication throughout and the lifetime warranty gave us real peace of mind."
"Beautiful craftsmanship — you can tell this is a team that's been doing this for decades."
20+ Years of Bringing Light to Life
Interstella Diamonds was built on a simple belief: exceptional gemstones shouldn't come with compromise — on quality, on ethics, or on price. For over two decades we've hand-selected and set lab-grown diamonds, natural diamonds, and moissanite from our home on the Gold Coast.
Every piece is made to order, backed by a lifetime warranty, and shipped insured, wherever you are in the world.
Read Our Full StoryJoin the Interstella Circle
Get 10% off your first order, plus early access to new designs.