Metals with high thermal conductivity are generally difficult to weld, but:
The thermal conductivity of silver decreases as its temperature increases.
This means that silver can be welded better when it is warm!
Weld several times on the same spot, this increases the temperature. A continuous welding sequence keeps the workpiece warm! The workpiece as a whole can get up to 100°C hot, which does not damage any stones, but is very uncomfortable to hold with bare hands!
Hold the workpiece with pliers, polishing fingers, etc.!
Silver, unlike most other metals, has a thinner welding behavior, therefore it is pushed forward by the arc and not pulled in the direction of the electrode movement.