Holiday gold sales hot international gold prices rose pawn gold per gram up 20 yuan

Because of the high value of gemstones, people must expect it to be durable, preserveable and even hereditary items. Diamond is the most expensive gem, one of the reasons is that it is the world's hardest, but also not afraid of corrosion of precious stones, so the world's higher value of precious stones for some hardness, corrosion-resistant silicate minerals (such as jade) (Such as jade, sapphire) and simple minerals (such as diamonds),