Generally, the basic stone setting is 18k, because the hardness of thousands of gold is not enough for stone setting.

If the gem is artificial zircon, it will not be preserved, or it will be bought for beautiful decoration. So the weight doesn't matter, of course it's the same price. Try to buy a big one. The 18K ring holder will hardly change color, and zircon will definitely not glow if it is left for a long time.

If the gem is a diamond, the value of the diamond below 0.5 carat is not guaranteed. That diamond has a certificate. You can let him show it.

Generally, thousands of gold rings are pure gold, and there are no gems. Buying it also keeps the value. General jewelers also recycle and exchange thousands of gold.

The last question is the weight of gold and precious stones. Generally, big brand jewelers such as Chow Tai Fook will not cheat on their weight. If it's a thousand gold rings, they can be weighed on the spot. Besides, a thousand gold rings will be worn for a long time.