Diamonds have no specific brand. The quality of loose diamonds is not directly related to the brand. The quality and quality of diamonds are determined by the 4c standard of diamonds, that is, the weight, color, clarity and cut of diamonds. Brand entity counters will have extra expenses on the cost of diamonds, such as store rent and personnel expenses, while South Diamond Starlight Diamond directly sells diamonds to end consumers in the mode of e-commerce, which reduces the sales cost, so the price is much cheaper than some brands on the market, which is closest to the value of diamonds themselves.