Jet Tumbles #2 measure approximately 1/2" to 1". Please let me pick one for you. These are $1.00 USD each.
Jet is very light fossilized wood; about the weight of Amber. Jet works on the Root Chakra. It is grounding and protecting, and will actually protect against violence. Jet is very calming. This is a "crystal" that is of use in the world of business, especially in regard to financial matters, bringing skill to these endeavors. It works on fear and helps with illness and depression.