Crushed by Bruce Fry The following effort to discuss a member of the wonderful family of related minerals called tourmaline comes from diverse, mostly informal sources. Outside of direct experience with red tourmaline from Mozambique, I do not have the resources to...
Why do we give things names? I think that its gives people a economical and convenient way to discuss something as long as both parties have the same thing in mind. I remember an endless argument with a reasonably intelligent roommate in college that was going nowhere...
I have been thinking about this quite a bit lately because of opportunities to sell some stone and the need to price them. The pricing of top quality gemstones is always a problem because subtle differences between stones can lead to quite a bit of difference in...
I have pretty strong feelings about setting tourmaline in jewelery. I read on the internet over and over again that tourmaline has a hardness between 7 and 7.5 on the mohe’s scale. That just means that it is relatively harder than quart/sand, which is enough when it...
This dark flash driven green emerald cut is a Dravite, the species, and displays the usambala effect. It appears to be eye clean and weighs 1.12 carats. This is the tourmaline in my collection that I will use in the following discussion on this page. It weighs 1.12...
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