Hollow jewelry, just hold it in your hand and weigh it, but it is easy to deform. Solid means full of gold, it will be a little more expensive, and the weight will be a little uncomfortable. Hollow jewelry will be beautiful, and big gold shops may sell it at a flat price. If it looks good, you can buy it. You can buy it if you want to keep it. Just go to a place like China Gold. It is recommended to sell gold in the depository. Formal, safe and expensive.