Carat Hunter · Diamond retailer comparisons

Quality Diamonds UK vs The Perfect Carat

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

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

At a glance

	Quality Diamonds UK	The Perfect Carat
Founded	2003	Not provided
Headquarters	London, United Kingdom	US
Current listings	90,854	1,885,461
Origin mix	Lab + Natural	Lab + Natural
Cert labs accepted	EGL · EGLUSA · GIA · HRD · IGI	AGS · CGL · DBGIS · DF · EGL · EGL HK · EGL ISRAEL · EGL USA · EGLUSA · GCAL · GIA · GIA-PREMIUM · GSI · HRD · IGI · OTHER · R&F · SGL · SGS · UNKNOWN · WISE
Ships to	UK · International	Not provided
Return window	60 days	Not provided
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.

Quality Diamonds UK

Origin mix

Lab-grown 0%Natural 100%

Most common shapes

Round 100%·Marquise 0%·Heart 0%

The Perfect Carat

Origin mix

Lab-grown 68%Natural 32%

Most common shapes

Round 43%·Oval 14%·Pear 11%·Emerald 9%

Stones stocked by both

We track 44,939 diamonds currently listed at both stores.

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

Explore Round 0.5ct H 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 Australia? 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.
The Perfect Carat stocks more lab-grown. Quality Diamonds UK stocks more lab-grown.

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.