Tourmaline Slide

Microscope slides of tourmaline from Brazil, these slides display the crystal structure of the mineral on a microscopic level which assists in the identification of this mineral in other slides. Tourmaline is crystalline mineral which is also classified as a semi precious stone due to the various colours it can be found in and the often high quality of their crystals. It is a boron silicate compound which usually appears jet black in colour and is known to exhibit pyroelectric properties because it was found to attract hot ashes. Each section is made to 30 microns thickness and the glass is 46 x 27 mm in size, supplied in a protective card sleeve with a label, ideal for microscopy & educational use.