Blue Nile
One of the oldest names in online diamonds, trading since 1999 and now part of the Signet group, Blue Nile is built around its Build Your Own Ring tool: choose a setting, then filter a very large inventory of loose diamonds by cut, colour, clarity, carat and certificate, with the price updating as the specification changes. Diamond and jewelry consultants handle requests that fall outside the catalogue, including modified settings and matching bands.
The strength is stone selection and comparison: few sites let a buyer weigh thousands of certified diamonds against a fixed budget so quickly. It is the right tool for the technically minded shopper. Those wanting a drawing from scratch will find the customisation shallower than at a bespoke workshop, and showroom coverage varies by region, so much of the decision happens on screen.
Pros
- Very large inventory of certified loose stones
- Configurator shows price shifts instantly
- Long trading history and clear return policy
- Consultants available by phone and chat
- Matching bands for most settings
Cons
- Customisation limited to existing settings
- No true sketch to CAD bespoke service
- Showroom coverage patchy outside big cities
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