Core Insights - The price of lab-grown diamonds has significantly decreased, with the price of a 1-carat lab-grown diamond dropping from 8,000 yuan to 3,500 yuan, which is less than one-tenth of the price of a comparable natural diamond [1] - Retail prices of lab-grown diamonds have fallen over 50% from their peak in recent years, and by 2025, lab-grown diamonds are expected to account for over 40% of the global diamond jewelry market, an increase of more than eight times since 2019 [1] - Consumers who purchased diamonds a decade ago are facing substantial losses, with one individual who bought a 1-carat diamond ring for 100,000 yuan now receiving a maximum offer of only 30,000 yuan for resale, and another individual who spent 18,000 yuan now only able to sell for 180 yuan, reflecting a 99% depreciation [1][2] Industry Trends - The trend indicates a growing market share for lab-grown diamonds, projected to exceed 40% by 2025, highlighting a shift in consumer preferences and market dynamics [1] - The drastic decline in resale values for diamonds purchased in the past suggests a potential risk for current and future investors in the diamond market, particularly in the lab-grown segment [1][2]