It consists of 9 minerals of known hardness which are in order i.e. softest to the hardest
SCIENCENT WITH DEVICE Rocks and Minerals Testing Kit
Was:
$86.98
Now:
$43.49
- SKU:
- COB203824
- UPC:
- 653552923374
- Condition:
- New
- Availability:
- Free Shipping from the USA. Estimated 2-4 days delivery.