Diamond Round Concave Ring in Platinum - editorial
Fine Rings

Round Diamond Ring in Platinum, 1.37ct

$3,795

A round-cut diamond ring in platinum, bright, clean, made to last.

Platinum wears at heirloom register. Naturally white, never patinated, never thinning, the metal that outlasts the stones it holds.

The piece carries 1.37 carats of diamond across the design.

Diamond is the daily-wear stone, hardest, brightest, longest-lasting in fine jewelry. Reflects fire in every direction.

Stacks with simple bands or wears solo, the proportions allow either.

Metal950 - Platinum

Speak with a Gemologist (800) 779-1726

From our Los Angeles atelier
Complimentary insured overnight shipping (U.S.)
One complimentary resize within 60 days of delivery, up to 1.5 sizes (U.S.)
Lifetime warranty against manufacturing defects
Know Your Stone

What You Are Wearing

Diamond

April Birthstone

The hardest material worn as jewelry and the standard every other stone is measured against. Built for a lifetime of daily wear.

From our Los Angeles atelier, one ring at a time.

Insured Delivery

FedEx Priority Overnight, fully insured, signature required.

Ready to Gift

Ships in a custom presentation box.

Lifetime Warranty

Against manufacturing defects, for the life of the piece.

Questions, Answered

Before You Decide

What if the size is not right?

One complimentary resize within 60 days of delivery, up to 1.5 sizes, for U.S. orders. Some designs cannot be resized; our atelier will advise. Beyond that window, our atelier still handles resizing for you; speak with a gemologist and we will take care of it. If you are unsure of your size before ordering, start with our ring sizing guide.

When will my ring ship?

Once your order is placed, it passes a final quality inspection and ships fully insured via FedEx Priority Overnight on U.S. orders, signature required.

How does platinum hold up to daily wear?

Platinum is a naturally white metal that never fades and never needs replating. With daily wear it develops a soft patina that many owners come to prefer, and it takes a fresh polish beautifully whenever you want the bright finish back.

Personalized Guidance

Not sure which stone or size? Speak with a gemologist.

Whether you are choosing between stones, deciding on a size, or picking a gift and unsure of a detail, one conversation settles it. Guidance is always complimentary.

Speak with a Gemologist
or call John Anderson directly · (800) 779-1726
From Our Clients

4.9 from 237 reviews on Trustpilot

Store-wide rating across all RockHer pieces. Read the reviews

From verified reviews
Verified buyer on Trustpilot · 1.5 ct lab diamond solitaire necklace

“The attention to detail, gorgeous diamond, and ability to personalize the necklace made the experience worthwhile. It’s exactly what I envisioned, and I know I’ll enjoy wearing it for years to come.”

Heather S. October 2026
Verified buyer on Trustpilot · Diamond earrings

“I never felt rushed or pressured, and I really appreciated being able to review everything and feel completely confident before the earrings went into fabrication… The level of attention and personal service made this feel like a much more special purchase than simply ordering jewelry online.”

Alex C. September 2026
Verified buyer on Trustpilot

“Stunning piece of jewelry!!! Would absolutely order from here again.”

Eric N. September 2026