تحليلات لوسي للماس
تحليلات سوقية معمّقة واتجاهات الأسعار ومعلومات شراء الماس من لوسي، محللة سوق الماس لدينا.
اشترك عبر RSSDecode a GIA Certificate Number From Specifications Alone
Every GIA graded diamond has a unique ten digit certificate number, and you can reverse engineer it from the specs alone. This guide walks through the exact narrowing process, from shape and carat down to measurements, using a real worked example.
The fluorescence discount is not flat: how 395,554 GIA listings show the price hit running from -23 percent on D to zero on H Medium
Conventional buying advice treats fluorescence as a single-direction penalty: avoid Medium and Strong fluorescence to dodge a price discount.
How to Find a Diamond Certificate Number When the Retailer Has Hidden It
Retailers who hide the certificate number are betting you won't do the research. Our 10.5 million diamond database can identify almost any stone from its grading specs alone, turning a redacted listing into a fully traceable diamond.
The lab-natural price gap is not 70 percent: what 1.5 million listings reveal about how the spread widens with carat
Industry shorthand says lab-grown diamonds are 70% to 80% cheaper than natural at matched specs.
IGI vs GIA grading on lab-grown diamonds: what 67,000 oval cohorts reveal
Across 66,477 lab-grown D VVS2 ovals graded by IGI or GIA and tracked at active retailers in the Carat Hunter index, the IGI median price is $1,206 and the GIA median price is $1,978.
GIA's Premium-Standard pivot: what 335,669 lab-grown stones reveal about the new tier system
GIA shifted lab-grown diamond reports from the traditional D-Z color and FL-I3 clarity scales to a binary Premium-Standard tier system effective October 1, 2025.
Cross-retailer diamond pricing: what 4.7 million matched listings reveal
Across 4,704,553 certified diamonds tracked at two or more retailers in the Carat Hunter index, the average price spread is $1,592 per stone.