Carat Hunter · Diamond retailer comparisons

Adiamor vs Quality Diamonds UK

Side-by-side store comparison. Independent and non-promotional.

Data current as of October 29, 2026 · Updated daily. Zero affiliate revenue.

At a glance

	Adiamor	Quality Diamonds UK
Founded	1999	2003
Headquarters	Los Angeles, CA	London, United Kingdom
Current listings	1,026,596	90,854
Origin mix	Lab + Natural	Lab + Natural
Cert labs accepted	AGS · EGL · GCAL · GIA · HRD · IGI · R&F · STULLER	EGL · EGLUSA · GIA · HRD · IGI
Ships to	US · CA	UK · International
Return window	30 days	60 days
Terms checked	Not yet verified	Not yet verified

Current listings, origin mix and accepted labs are updated daily. Founded, headquarters and shipping come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer in the table. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

What each store stocks

Inventory composition observed across each store's current listings.

Adiamor

Origin mix

Lab-grown 84%Natural 16%

Most common shapes

Round 34%·Oval 15%·Emerald 9%·Pear 9%

Quality Diamonds UK

Origin mix

Lab-grown 0%Natural 100%

Most common shapes

Round 100%·Marquise 0%·Heart 0%

Stones stocked by both

We track 18,058 diamonds currently listed at both stores.

Most common overlap: Round, 0.5ct, natural, D VVS1

Explore Round 0.5ct D VVS1 cohort

Each matched stone has its own page where both retailers' prices appear next to the same physical diamond. That is where price comparison happens, on the stone, not on this page.

Pick by what you are looking for

Need shipping to New Zealand? Only Quality Diamonds UK ships there.
Need GIA grading? Both stores carry it.
Need IGI grading? Both stores carry it.
Need HRD grading? Both stores carry it.
Adiamor stocks more lab-grown. Quality Diamonds UK stocks more natural.

Looking for a specific spec?

Browse every retailer in our index, grouped by shape, carat, colour, and clarity. Thousands of spec pages.

Browse where-to-buy by spec

Questions we get

Does Carat Hunter earn commission from either store?

No. We earn zero affiliate revenue from any retailer in our index.

Why do you not show price comparisons on this page?

Pricing varies per stone, not per store. Click through to any matched diamond above and you'll see both retailers' prices on the exact same physical stone, which is the real comparison.

How fresh is this data?

Listings refresh as we re-read each retailer, most of them every day. Static facts refresh monthly.

How do I find a specific stone at both stores?

Use the GIA or IGI certificate number in our search.