Tools
Reference tools built on published grading standards and standard gemological formulas. No live prices.
Carat size calculator
Millimetres and face-up area for 10 shapes, drawn to scale next to a 1 ct round.
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Ring budget calculator
A budget from your own savings and timeline, not a two-month rule.
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Ring size converter
Turn a measurement into a US, UK or EU ring size.
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4C grading scales
Color, clarity and cut grades on the GIA scale, with what you can actually see.
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Certificate guide
Where to verify GIA, IGI and HRD reports, and what to check first.
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Lab-grown vs natural
Eleven points side by side, with sources.
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Diamond glossary
44 terms, A to Z, linked to the guides.
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