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6-week lead time, handmade to order

IGI Certified Lab-Grown Diamonds

Complimentary engraving on every ring

Every ring is handcrafted once you order. IGI certified lab-grown diamond, solid 18K gold or platinum, shipped free and insured worldwide.

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The Sora oval-cut lab-grown diamond signet ring in 18K yellow gold, front view
The Sora oval-cut lab-grown diamond signet ring in 18K yellow gold, inside of the band
The Sora oval-cut lab-grown diamond signet ring in 18K yellow gold, side view
The Sora oval-cut lab-grown diamond signet ring in 18K yellow gold, side profile
An Una Diamond ring in its presentation box

The Sora Oval-Cut Signet Diamond Ring – Lab-Grown | 18K Gold or Platinum

Band Material18K Gold
Carat Size1ct

Made for you, not a shelf

IGI Certified Diamond

Ready in ~6 weeks

Free insured shipping

Each ring is handcrafted once you order. No stock. No shortcuts. Just yours.

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The Sora Oval-Cut Signet Diamond Ring – Lab-Grown | 18K Gold or Platinum

$6,100.00 AUD

Behind the piece

The Sora Oval-Cut Signet Diamond Ring – Lab-Grown | 18K Gold or Platinum

Every Una ring begins with a clear point of view and a commitment to craft. Yours is no exception.

The Sora is a signet-style ring with a bezel-set oval lab-grown diamond sunk into a smooth, domed band. It sits flush against the finger for a seamless feel and a fair bit of presence, and it's designed to be worn however you like, on the ring finger, the index, or as a bolder alternative to a traditional engagement ring. Made by hand to order in solid 18K gold or platinum.

Specifications

  • Diamond: Lab-grown, high clarity, IGI certified
  • Shape: Oval cut
  • Setting: Bezel, signet-style
  • Metal: 18K yellow, white or rose gold, or platinum
  • Carat: 1ct to 5ct, chosen at checkout
  • Engraving: Complimentary
  • Made to order: Handcrafted to order, around six weeks
  • Designed in Australia

The signet ring, reimagined

The signet form is one of the oldest ring designs in existence — a flat or domed face, historically used to press a seal into wax. The Sora takes that form and sets a bezel-held oval lab-grown diamond into it, transforming the signet from a symbol of authority into something more personal and contemporary. The flush bezel keeps the stone protected and the profile low, which suits people who find traditional prong settings too raised for daily wear.

The oval cut is one of the most flattering diamond shapes — its elongated form follows the line of the finger, creating the impression of length. A bezel setting reinforces that elegance with a clean perimeter line around the stone.

Made to be worn your way

The Sora is designed to be worn on any finger. On the ring finger it reads as a distinctive engagement ring; on the index or middle finger it becomes a statement piece. The solid bezel and smooth band make it practical for active hands. Every Sora is handcrafted to order in solid 18K yellow gold, white gold, rose gold, or platinum, with your chosen oval diamond IGI-certified before setting.

Also available: oval cut engagement rings or classic solitaire rings.

The Eva lab-grown diamond pave band in 18K white gold

create your own

The Una ring builder

Create the ring that feels like you. Our Ring Builder lets you choose your diamond, metal and proportions with total clarity, guided by the same design principles we use in-house.

ready to wear

Our signature pieces

From delicate pavé bands to bold diamond staples, each Una design begins with a clear point of view: modern, refined, and made to be worn every day. Every piece is crafted with lab-grown diamonds, ensuring beauty with purpose.

una x forever projects

Designed with care, backed by purpose

We’ve partnered with Forever Projects as part of our 1% Pledge. That means every single Una Diamond purchase contributes to life-changing programs for mothers and children.

IGI Certified

Every diamond supplied with an IGI certificate, verifying cut, colour, clarity and carat.

Handmade to Order

Your ring is crafted from scratch — designed around your diamond and your specifications.

3-Year Warranty

Every Una Diamond ring is covered by our 3-year warranty for manufacturing defects.

Made in Australia

Designed and crafted by skilled artisans in Australia, with the care your ring deserves.

Need help deciding?

Let’s talk style, stone shapes, or self-gifting.

Beautiful jewellery & fantastic customer service!

CAMILA L

If you want beautiful custom made jewellery, fantastic customer service and something very unique that will last you a lifetime, look no further...

STEVE H

First marriage didn't work out, but I'm pretty sure it's because it wasn't an Una Diamond!

MATTHEW M