These two days I try to find a Jewel factory which has YAG laser cutting ,but hard to find , at last I give up . I think it is rare in China
An experienced laser cutting seller tell me below Reasons :

1. Expensive : laser cut for Silver is more expensive than metal , because metal is less reflection , but silver is more .

2. Loss rate : Laser cut on Silver will burn the silver , cause the loss of each silver is far more than handmade one , for silver or gold material , loss rate means money .

3. Machine error rate: Because silver has bigger reflection , so machine watt is up , so as heat up , but when laser light reflect from silver surface , it burn on laser head too , so the machine error rate raise .

4. Other reason like : labor price is lower than lasers , processing method / skill / range , those limit laser cut on silver and gold .

So only laser mark is work on silver / gold market now .