tourmaline in a sentence

Examples

1. Tourmaline is notable for exhibiting strong pleochroism.
2. Brazilianite also found with tourmaline and feldspar.
3. Matthew Forster Heddle found the quarry a good source for the minerals tourmaline and beryl.
4. The inventor of a new polarizing medium, as an efficient substitute for the Tourmaline.
5. "There's a growing interest in colored gemstones like citrine and pink tourmaline.
6. Portnoy was keen to find something more unusual, a tourmaline or perhaps some green apatite.
7. Another highly valuable variety is chrome tourmaline, a rare type of dravite tourmaline from Tanzania.
8. Another highly valuable variety is chrome tourmaline, a rare type of dravite tourmaline from Tanzania.
9. Tourmaline also occurs in some aplites.
10. Associated minerals include beryl, phenakite, herderite, tourmaline, muscovite, fluorite and quartz.