💎 Certified · Independently Graded

Loose diamonds & gemstones, honestly priced.

Lab-grown diamonds certified by IGI or GIA, plus natural rubies, sapphires and emeralds with recognised lab reports. Tell us what you're looking for and we'll come back with a curated shortlist within one business day.

Rion Gems tamper-evident presentation card, frontRion Gems IGI diamond grading report, back

Tamper-evident · Ships sealed

Independently certified

IGI and GIA.

Full report included

4Cs, plot diagram, laser inscription.

30-day return

Loose stones ship insured, free.

Tell us what you're looking for

We'll curate a shortlist.

Share as much or as little as you like - even rough ideas help us find the right stones.

01

Gemstone

03

Budget & timeline

$13,500
$1,000$50,000+
04

Your contact

We'll reach out within one business day. No account required.

Prefer a full ring?

Pair any gemstone with one of our eight house settings.

Start the ring builder