The terminal selling price of a diamond (diamond ring) is usually 3~4 times of the ex-factory price of the finished product, that is to say, the price increase in the circulation field is as high as 200%~300%, and some well-known brands are as high as 400%~500% or even higher.
Appraisers always get the final valuation according to 4C Yi (i.e. weight, color, clarity and cut) of diamonds, compare it with the benchmark price in recent diamond quotations, and then multiply it by the corresponding discount rate. Because it exceeds 1 carat, the discount rate is about 60% to 70%, which basically ignores the value of cash withdrawal.
Extended data
1, maintain the diamond ring and don't hit it: diamond is the hardest thing in the world, but in fact it is very afraid of hitting it. Because of its special molecular structure, it can carve traces on any gem, but it can't stand collision. Especially the "pointed inlaid" diamond, the diamond waist is very fragile.
2. Maintain the diamond ring and conduct regular annual inspection: diamonds are often lost due to loose inlay. It is suggested that diamond ornaments should be inspected annually, and the inlays should be re-reinforced and polished.
3, diamond ring maintenance, professional cleaning: diamonds are lipophilic gems, easy to be contaminated with oil, so take off the diamond ornaments when applying hand cream. You can't wear it while swimming. Chloride bleach in water will corrode diamonds. It is recommended to choose professional jewelry cleaning agents and instruments for cleaning.
4, diamond ring maintenance, classified storage: classified storage of different gems to prevent hard diamonds from scratching other gems. To prevent the jewelry from darkening, put a piece of chalk to absorb water.
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