How I research and rank

Buyer router

Where should you actually buy a diamond?

Six questions. No email address, nothing stored, nothing sent anywhere. At the end you get a seller type and the questions to ask them, not a shop name.

What are you buying?
Budget for the stone itself, setting excluded
When do you need it?
How much does the specification matter?
On the day, what matters most?
Might you sell or upgrade it one day?
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A note on where this comes from. I work in the diamond trade, so treat the reasoning as an argument to check rather than a neutral verdict. Everything the router tells you is set out with its working on what a diamond actually costs and in the 6,482-review study. It names no business and links to no seller, deliberately.