This dravite tourmaline is from the Rampura-Aguchi Zn Deposit in the Biwara District, Ajmer Division, Rajasthan, India. Dravite is in the tourmaline group of minerals. It is a silicate that contains the elements, Na, Mg, Al, Si, O, B and H. This fine crystal has pyramidal terminations, nine prism faces and a bright vitreous luster. It is translucent to transparent with internal flawing and it has an amber color under bright lights as shown in the photos. It measures 13/16 x 7/16 x 3/8 inches or 20 x 11 x 9 mm.