Diameter 5 mm, silver 999 is ideal for embedding stones in it. It’s intended for being worked into soft silver clay and the jewellery piece gets fired with the prong setting. Only the stem is inserted into the clay, the prong setting itself can stay in the air. It needs to be worked into the clay well. The stone gets embedded after firing. When firing with a burner, move the flame, otherwise the fine prong setting could melt.