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اشترك عبر RSSLab-Grown Ovals Just Doubled in Price and You Should Be Suspicious
Lab-grown oval prices in the 1 to 1.25 carat range spiked over 84% in seven days, driven by supply composition shifts rather than genuine demand. The smarter play is stepping up in quality or waiting for the correction.
Natural Diamonds Are Down 6% and Some Categories Just Lost Half Their Value
Natural diamonds fell 6.4% this week, but five categories dropped 40% to 82%. Lab-grown prices bounced in select segments, cross-retailer spreads hit 65% on rounds, and we found five stones sitting well below market.
Oval Is the Shape With the Widest Lab vs Natural Gap
Natural ovals carry a median price of $2,451 per carat. Lab-grown ovals sit at $414. That 83.1% gap makes oval one of the widest lab vs natural spreads across any diamond shape, and it exists in the most popular fancy cut on the market.
Natural Diamonds Dropped 6% This Week and Lab-Grown Didn't Follow
Natural diamonds fell 6.4% across 6,077 categories while lab-grown climbed 5.6%. Supply is flooding in for popular engagement ring sizes, cross-retailer spreads remain wide, and several categories cratered by 40% or more.
Round Brilliants Are Where the Lab vs Natural Spread Is Tightest
Round brilliants carry an 80.6% lab vs natural price gap, tighter than ovals, cushions, and radiants. With 3.3 million tracked listings, the round market is the most liquid in the industry. We compare pricing across tiers and show where real value sits.
The 86.8% Spread Between Lab-Grown and Natural Diamond Prices Across 14 Million Listings
Across more than 14 million active diamond listings, lab-grown stones sell for roughly 86.8% less per carat than natural equivalents. We break down the spread by shape, show matched pair comparisons, and explain why the gap keeps widening into 2026.
The missing SI1 lab market: how 5.4 million lab grown listings reveal that 70 percent of supply concentrates at VVS2 and VS1, leaving the bottom of the clarity scale almost empty
The clarity distribution of natural diamonds spans the full GIA scale, with each grade from FL through SI2 holding 5% to 18% share of inventory.
Natural Diamonds Dropped 6.4% This Week. Lab-Grown Rose.
Natural diamonds slipped 6.4% this week while lab-grown climbed 5.6%, opening a notable divergence between the two markets. Cross-retailer arbitrage on half carat rounds hit $634 spreads across nine retailers, and supply floods in key categories signal more buyer leverage ahead.
Certification (20%), GIA, IGI, AGS, and When Each Is Enough
Certification carries 20% of every Caratlytics score. We break down how GIA, IGI, AGS, and GCAL are tiered in our methodology, why uncertified stones face heavy penalties, and where fancy colour grading demands GIA or nothing.
The 30% That Tells You Whether a Diamond Is Fairly Priced
The Value component carries 30% of every Caratlytics grade, more than any other single piece. We break down how diamonds are bucketed by shape, carat, colour, and clarity, why we use medians over averages, and how cross-retailer signals add a second layer of confirmation.
Why Polish, Symmetry, and Proportions Move Diamonds Up the Quality Grade
Quality accounts for 35% of every Caratlytics score, making it the heaviest single component. Most of that weight comes from polish, symmetry, and proportion details that buyers routinely overlook. Only 0.4% of 8.7 million scored diamonds reach A+ status, and Quality is the main reason.
The 5th C: How Carat Hunter Scores 16 Million Diamonds
Only 0.4% of the 8.7 million diamonds we score earn an A+ grade. The Caratlytics Score is our proprietary fifth C, a composite of quality, value, certification confidence, and market positioning that answers the question the 4Cs never could. This is the full methodology, explained from the ground up.