When retailers begin sourcing certified lab-grown diamonds at wholesale, CVD and HPHT appear on every IGI grading report. The practical question is straightforward: does the production method affect the quality of what you are selling? This guide covers the 4Cs, visual performance, pricing, and what retailers should actually focus on when selecting stock. What CVD and HPHT Mean CVD (Chemical...
The bow-tie effect is the single most important visual factor that the IGI grading report does not measure. For retailers selecting certified oval, pear, and marquise lab-grown diamonds at wholesale, knowing how to identify, assess, and act on bow-tie severity before purchase is a foundational buying skill. What Is the Bow-Tie Effect The bow-tie effect is a dark shadow across...
Every certified lab-grown diamond sold through LabGems carries an IGI grading report. For European jewellers, IGI certification is no longer a premium differentiator — it is a baseline expectation among informed retail customers. Understanding what the certificate covers, how to read it, and how it affects retail positioning is foundational knowledge for any retailer stocking wholesale lab-grown diamonds. What Is...
Lab-grown diamond wholesale prices in 2026 range from approximately €300 to €500 per carat at the entry tier (0.30ct to 0.50ct, F–G colour, SI1 clarity) up to €3,000 to €8,000 per carat at the luxury tier (1.50ct and above, D–F colour, VVS1–FL clarity). Prices sit approximately 80 to 90 percent below equivalent mined diamond wholesale prices. For European jewellery retailers...
A 12-month stock plan connects your sales history to your buying decisions. For lab-grown diamond retailers, it serves a specific function: reducing over-ordering during quiet periods while ensuring adequate inventory depth when demand peaks. Without a forward-looking plan, retailers either absorb excess carrying cost through slow months or lose margin on sales during peak periods because the right stock was...
Lab-grown diamond stock requires active management. Without a structured rotation cycle, retailers accumulate slow-moving shapes, over-represent certain carat ranges, and miss reorder windows on the shapes that drive consistent sales. A 90-day operating model gives your inventory a defined rhythm- built around what moves, what stalls, and when to act. Why 90 Days Is the Right Rotation Interval Ninety days...
