champ.

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Champagne diamonds keep turning up in trend round-ups, engagement announcements and retailer marketing. We read the coverage, link to it in full, and then check what it claims against the 2,822 stones in our own index — because a trend piece can tell you a colour is fashionable, but only the prices can tell you what that is doing to what you would actually pay.

2026-10-09Lab-grown wholesale prices rose in the third quarter. What that changes for a champagne diamond buyerEdahn Golan's wholesale price list, published 7 October, put lab-grown round diamonds up about 2% on the quarter after years of decline. What the turn is worth to a buyer weighing a lab-grown stone against a natural champagne diamond, and why neither list reaches a brown one.5 sources2026-09-29A new GIA fluorescence comment is due next quarter. It will say nothing about a brown tintGIA is due to add a fluorescence comment to D-to-Z grading reports in the quarter that opens 1 October. What it will say, which champagne diamonds are outside it, and why no report you can buy this week carries one.6 sources2026-09-27Cutters have moved to fancy shapes. GIA issues no cut grade on any of themRapaport's 24 September market comment says manufacturers have shifted output to fancy shapes, that very well-cut fancies command premiums and badly proportioned ones are illiquid. GIA grades the cut of no fancy shape, and 1,355 of the 2,775 stones indexed here are fancy shapes.5 sources2026-09-23A new lab-grown screener reads a mounted ring in six seconds. Its color range ends at JDe Beers showed SynthDetect 2 on 15 September: a lab-grown screener that reads a mounted ring in about six seconds. Its published color range is D to J, and champagne diamonds are graded K and below or carry no letter at all. What that means for accent stones, and for a center stone.10 sources2026-09-23A new lab-grown screener reads a mounted ring in six seconds. Its colour range ends at JDe Beers showed SynthDetect 2 on 15 September: a lab-grown screener that reads a mounted ring in about six seconds. Its published colour range is D to J, and champagne diamonds are graded K and below or carry no letter at all. What that means for accent stones, and for a centre stone.9 sources2026-09-21A new US law could raise tariffs on Indian-cut diamonds. What that changes on a price tag todayTrump signed the Russia sanctions act on 18 September, giving him authority to tariff goods from India, where about nine in ten diamonds are cut. Indian-cut stones already carry 10 percent. What is in force, what is only authorised, and what our index can and cannot show.8 sources2026-09-09Rapaport's 1-carat index rose for the first time in 15 months. It does not cover champagne diamondsRapaport reported on 2 September that its 1-carat index rose 0.5% in August, its first gain in 15 months. The index covers round D-to-H, IF-to-VS2 stones — the near-colorless side of our price comparison, not the brown-graded diamonds themselves.3 sources2026-09-06De Beers says K-to-Z diamond sales rose 19%. On our index, the discount on those letters has not movedDe Beers' next "desert diamonds" campaign starts this month around four jewellery classics, and its own figures put K-to-Z color sales at US independents up 19% in the first quarter. What that number measures, and what 2,806 verified brown stones say about the price today.3 sources2026-09-04Cape, champagne, chocolate, desert: the same diamond, renamed four times in forty yearsEvery generation of the trade has given brown diamonds a new name. What stays constant is the GIA grade — and what it is worth.6 sources2026-09-04A year of De Beers "desert diamond" marketing has changed the name, not yet the priceDe Beers has spent a year promoting warm-toned diamonds as "desert diamonds". Attention is up. In our index a Fancy Brown stone still costs a third less per carat than a barely-tinted one — which, for a buyer, is the good news.5 sources2026-09-03A grading lab is finding lab-grown browns in natural melee. What that means for a centre stoneGSI reports undisclosed lab-grown brown diamonds turning up in parcels of natural brown melee, and links it to the marketing push. What that means if you are buying a champagne diamond.3 sources2026-09-02Which celebrity champagne diamonds are documented, and what the look costsKate Hudson's half-million-dollar suite is on the record in detail; two of the most-cited examples are thinner. We traced each claim to the outlet that first reported it, then priced the look.7 sources2026-09-01Pinterest put brown on the wedding board. The supply has not caught upPinterest's wedding report named champagne and brown diamond engagement rings among the searches couples are making. Our index shows how thin the visibly brown end of the market actually is.4 sources