What gives gemstones colors ... known as bi-colored or watermelon tourmaline, where pink and green hues coexist due to ...

The gem is also nicknamed "the stone of health ... Tourmaline occurs in quite a spectrum of colors, but if you can find a watermelon tourmaline—that is, a stone with a green exterior and ...

If you don’t instantly associate Maine with gem and mineral mining ... partners could only call “the Big Pocket,” a cavernous room chock-full of watermelon-colored tourmaline crystals, a grotto like ...

Gem mining in Maine — the search for tourmaline ... Another young customer found a 25-carat watermelon tourmaline while sifting through a $15 bucket of mine tailings at Maine Mining Adventures.

Watermelon tourmaline - a naturally occurring crystal ... spent time in Brazil, where the vibrant gems are prevalent. In their designs, the pair let the perfectly imperfect stones dictate settings ...

Image Some of the collection highlights: clockwise from top left, the largest lunar meteorite in the museum’s collection; a watermelon tourmaline slice, from the Dunton Gem Quarry in Newry ...

A Colorado gem about the size of an adult’s palm could ... “The ones in Colorado are this really gorgeous, saturated, I like to call watermelon color,” said Tama Higuchi, a fine minerals ...