Gem Minerals
Gem Minerals, 15
: : 470151-154
Observe and compare gem minerals
Students observe and compare 15 colorful rough gem minerals which illustrate semi-precious stones having commercial value. Samples are approximately 1 1/2"" x 1 1/2""
The set is housed in a compartmented box with an identification list.
- Désignation:Gem Minerals
- No. of Samples:15