Related Clues:
- Element no. 77
- Heavy metal
- Corrosion-resistant metal
- Metal in surgical tools
- Metallic element
- Metal in the points of gold pens
- Surgical-tool metal
- Element with the symbol Ta
- Most corrosion-resistant metal
- Platinum-group element
- Metallic element used in spark plugs
- Silvery-white metal
- Heavy brittle metallic element of the platinum group
- It's very hard to be Ir, in short
- Ir - that's elementary