Earring Collection

Light at your ear.

Diamond studs, hoops, and drops in 14K gold.

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Necklace Collection

Worn close to the heart.

Pendants and tennis necklaces in 14K gold.

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Tennis Collection

Brilliance that moves with you.

Lab-grown diamonds in 14K gold.

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Ring Studio

Design your perfect ring.

Choose your diamond, setting, and metal. Preview in 3D.

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Collections

Curated with intention.

Lab-grown diamond jewellery for every occasion.

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Gift Guide

The gift they'll remember.

Lab-grown diamond jewellery for every budget.

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Know Before You Buy

Diamonds, demystified.

4Cs, IGI certification, lab-grown vs mined - decide with confidence.

Start Learning →

Trust and transparency

Is Carat Theory Legit?

Yes. Carat Theory is a Canadian fine jewellery brand based in Calgary, offering lab-grown diamond jewellery in 14K gold. Every piece is selected for clear specifications, transparent pricing, and independent certification.

How certification works

Diamonds above 0.50 carat include their own individual IGI certificate. Diamonds below 0.50 carat are certified at the jewellery level. Product pages state the carat weight, colour, clarity, cut, and metal for each piece before you buy.

What every piece includes

14K gold construction, never plated. IGI documentation appropriate to the piece. Product-specific specifications listed on the product page, not buried in fine print.

Shipping and returns

We ship across Canada and to the United States. Unworn items in original condition can be returned free within 14 days of delivery, with return postage covered in Canada. Custom, engraved, and Ring Builder pieces are final sale. Every piece carries a 1-year warranty on craftsmanship and setting.

A decision this personal deserves clear information, not vague promises.

How reviews are collected

Carat Theory is a newer brand, and our review base reflects that - it's still growing. Reviews are collected through Judge.me after purchase where available, so feedback is tied to real customer orders whenever verification is possible. We do not write or fabricate customer reviews.

The Lumina Pendant Certification and specs, on every product pageCarat weight, 14K gold, IGI certification appropriate to the piece.The Lumina Pendant$2,100.00 View →

Frequently asked

Is Carat Theory legit?

Yes. Carat Theory is a Canadian fine jewellery brand based in Calgary, offering lab-grown diamond jewellery in 14K gold.

How does certification work?

Diamonds above 0.50 carat include their own individual IGI certificate. Diamonds below 0.50 carat are certified at the jewellery level.

How are reviews collected?

Carat Theory is a newer brand, and our review base reflects that - it's still growing. Reviews are collected through Judge.me after purchase where available. We do not write or fabricate customer reviews.

Before you buy

Questions about a specific piece, certification, or an order? Contact us at contactus@carattheory.com - we'll help you choose with clear, human support before you buy.