Feature●This collection of 9 minerals represents the scale of hardness #1 through #9. The 1" specimens are number coded and keyed to a list. The collection is stored in a compartmented container. This collection is also available with a diamond specimen, representing hardness #10.●The 1" specimens are number coded and keyed to a list●The collection is stored in a compartmented container●This collection is also available with a diamond specimen, representing hardness #10Description
This collection of 9 minerals represents the scale of hardness #1 through #9. The 1" specimens are number coded and keyed to a list. The collection is stored in a compartmented container. This collection is also available with a diamond specimen, representing hardness #10.