Modern and traditional
Birthstone Finder
Pick a month and see its modern and traditional birthstones, what they mean, how they wear and what to give. Every stone links to its full profile.

Modern and traditional lists
The modern list was standardised in 1912 by American jewelers and updated since (tanzanite in 2002, spinel in 2016); the traditional list goes back to older European and biblical associations. Both are in use, and many months offer a choice. The durability note tells you whether the stone suits a daily ring or belongs in earrings and pendants.
More tools
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Live spot price
Gold Calculator
Calculate the fine metal value of gold, silver, platinum or palladium jewelry, coins and scrap from the live spot price: weight, purity, currency, and what buyers typically pay.
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Diamond Price Estimator
Estimate the retail price of a natural or lab-grown diamond from carat, colour, clarity, cut and shape, and see what a buyer would typically offer for it.
OpenPre-owned market
Watch Valuation
Estimate the pre-owned market value and the typical dealer offer for a luxury watch by brand, model, condition, box and papers.
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