What gives gemstones colors ... known as bi-colored or watermelon tourmaline, where pink and green hues coexist due to variations in trace element concentrations along the crystal’s length.

This gem is renowned for its unique play of color ... One type of tourmaline is even called a 'watermelon tourmaline' because it literally looks like a slice of watermelon!" According to Harris ...

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 ...

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 ...

Chrisy Bossie built a $100,000-a-year gemstone e-commerce business by ... available in amethyst, lapis, watermelon tourmaline, turquoise.... Shop them all here,” she wrote in a recent marketing ...