Index
Comparisons
Most people arrive already down to two names. These pages settle it on published terms, imaging approach, ownership and what each is actually built for.
Check live prices — we don't print them here, because they change daily.
Rings
The centre stone is where nearly all the money goes. Compare the same specification at each — shape, carat, colour, clarity, cut grade and grading laboratory held identical, or you are not comparing anything.
Earrings
Sold by total carat weight across the pair, so a 1ct pair is two half-carat stones. Cheap enough to make a sensible first purchase from a retailer you have not used before.
Bracelets
Check the clasp and the safety catch before the stone quality. A tennis bracelet that springs open on the wrist is the most common way people lose one.
Necklaces
The chain matters more than buyers expect. Check the gauge and the clasp — a heavy pendant on a thin chain is a repair waiting to happen.
Links open each retailer's own category page. Rare Carat links are affiliate links and earn us a commission if you buy, at no extra cost to you. The other three are plain links that earn us nothing today; if that changes, this line changes with it. Every relationship is listed on the disclosure page.
- Blue Nile vs Brilliant Earth: what the premium buys — These two are not competing on the same thing. Blue Nile sells the keenest price on a certified stone;...
- Blue Nile vs James Allen: the comparison Signet just settled — Signet owns both, and in March it announced it is closing jamesallen.com and folding the brand into Blue Nile....
- Rare Carat vs Blue Nile: marketplace or retailer — These are not the same kind of business. Blue Nile sells you a diamond. Rare Carat searches other vendors'...
- Rare Carat vs Brilliant Earth: opposite ends of one market — This is the widest gap of any comparison on the site. One searches every vendor it can reach and surfaces the...
- James Allen vs Brilliant Earth: see the stone or trace it — This comparison had a clean answer until March, when Signet announced it is closing jamesallen.com. If you are...
- Brilliant Earth vs Grown Brilliance: the lab-grown question — One sells lab-grown alongside natural stones and prices it as part of a premium range. The other sells nothing...
Still to publish
Next in priority order, set by search demand against difficulty:
- Brilliant Earth vs VRAI
- Brilliant Earth vs Ritani
- Angara vs Blue Nile
- James Allen vs Rare Carat
- Brilliant Earth vs Shane Co
Each of these sits at or near zero difficulty with paid competition well above the site average. One page serves both word orders — put each phrasing in the title and a subheading.