Core Viewpoint - The rising international gold prices in 2025 have shifted consumer preferences for gold jewelry from mere decorative items to valuable assets, leading to a dilemma between 14K and 18K gold based on individual needs and market conditions [1][18]. Group 1: Gold Purity and Composition - The "K" in K-gold represents gold purity, with 24K being pure gold (100% gold content). The main difference between 14K and 18K gold lies in their gold content, which directly affects their price, quality, and performance [3]. - According to international standards, 14K gold contains 58.3% gold, while 18K gold has 75% gold content, with the remainder being alloy metals [5]. Group 2: Market Pricing and Cost Analysis - As of August 2025, the raw material price for 14K gold is approximately 180 RMB per gram, while 18K gold is around 240 RMB per gram, resulting in a price difference of about 33% [6]. - Labor costs also play a significant role, with 18K gold typically incurring 20%-50% higher labor costs due to its suitability for intricate designs and craftsmanship [6]. Group 3: Durability and Long-term Value - For jewelry that is worn regularly, durability is crucial. 14K gold, with a higher alloy content, has a Mohs hardness of 5.5-6, compared to 18K gold's 4.5-5, making it more resistant to scratches and deformation [10]. - In terms of long-term usage costs, 14K gold is more advantageous as it requires less maintenance and repair compared to 18K gold, which tends to wear down faster [10]. Group 4: Resale Value and Investment - The resale value of 18K gold is approximately 1.3 times that of 14K gold, with pawn shops typically offering 58% of the current gold price for 18K gold and 49% for 14K gold [12]. - For those considering gold jewelry as an asset or for inheritance, 18K gold's higher gold content provides better value retention, especially for larger pieces [12]. Group 5: Consumer Preferences and Recommendations - For individuals with sensitive skin, 18K gold is a more suitable choice due to its lower nickel content, which reduces the risk of allergic reactions [14]. - Recommendations for purchasing include choosing 14K gold for budget-conscious buyers and 18K gold for those prioritizing quality and value retention, while ensuring proper certification and maintenance to maximize longevity [16]. Group 6: Conclusion - In the context of rising gold prices in 2025, 14K gold offers high cost-effectiveness and durability, while 18K gold emphasizes quality and value retention. Understanding personal priorities—whether practical or value-oriented—will guide consumers in selecting the most suitable jewelry [18].