This kit contains nine mineral specimens that can be used to determine the relative hardness of an unknown specimen. It can be used in the field, classroom, or laboratory. The minerals contained in the kit and their respective Mohs Hardness Scale values are: talc (1), gypsum (2), calcite (3), fluorite (4), apatite (5), orthoclase (6), quartz (7), topaz (8) or beryl (7.5 to 8), and corundum (9). Diamond (10) is not included. Packaged in a sturdy box with a plastic tray to keep the collection organized. Great for classroom use, laboratory use or personal study. Click on the image for a larger more detailed photo.
Hardness picks make hardness testing a more precise process - especially when testing
small specimens or mineral grains within a rock. The point of the pick can easily be placed
on the part of the specimen that you want to test. The scratches that you make or trails of
metal that are left behind are usually very easy to distinguish.
Simply hold the pick in your hand like a pencil and place it on the area that you would like
to test. Then, with pressure, drag the point across the surface of the specimen. It will either
leave a scratch, slide without scratching, or leave a trail of metal behind.
The set includes eight points - for Mohs hardness of 2, 3, 4, 5, 6, 7, 8 and 9. The 2 is a plastic
point, the 3 is a copper point, the others are alloys carefully selected to match the hardness of
the Mohs index minerals.
The set includes:
Four double ended picks with hardness points of 2-9 on Mohs hardness scale
A grinding plate for sharpening your points
Glass plate for quick "hard" or "soft" determination
A hardness plate with a hardness of 3.5
Paper table listing common minerals and their hardness
Hardness testing instructions
All of this in a compact (7" x 2 1/2" x 1 5/8") wooden case that takes up minimal space on a desk or shelf.
Picks Available in Plastic Field Case Below
Hardness Pick Set (In a Plastic Field Case)
This hardness pick set has the same contents as the kit described above. It is packaged in a durable plastic case for easy carrying in the field. The case opens and closes on a hinge and has a plastic latch. The case measures approximately 5" by 8" by 1 3/4" when closed.