This natural color indicolite tourmaline specimen is a partially terminated crystal section with a relatively thin flat shape. ***It has medium-dark to dark blue natural color when viewed perpendicular to the c-axis as shown at left. This dark blue tourmaline looks almost black until held up to a light as shown. ***Along the c-axis it is dark. There are some faint natural inclusions throughout most of its length, and it has a completely eye clean area at one end that would yield a one carat gem. ***The remainder of this blue tourmaline crystal section would yield a very nice 4 carat blue tourmaline faceted gem that would face up eye clean with some faint inclusions only visible under close inspection. Both gems would have rich dark blue color! ***See also an end view photo of this natural blue tourmaline facet grade rough. This natural color blue tourmaline crystal weighs 19.95 carats ***Blue Tourmaline Facet Rough Dimensions: 23mm x 14.5mm x 6mm deep Mined ethically and respectfully in Brazil See also another view of this natural color blue tourmaline crystal. This Beautiful Specimen will come to you with an Certificate of Authenticity from our main website www.mineralminers.com at no additional cost. Blue Tourmaline is very popular today for metaphysical use - Blue Tourmaline is know to be a crystal of Spirit and peace, providing for deep meditation. It is said to help with the release of emotional bonds and frees the mind to a higher consciousness and spiritual connection. To learn more about Tourmalines, please copy, paste and visit our Tourmaline Educational and Information Page at; https://mineralminers.com/html/touminfo.htm#tourmaline-information Main picture was taken inside under fluorescent lights. At MineralMiners.com your satisfaction is our top priority! We guarantee Unique Items, Superb Energy and Collector Quality at Miner's Prices! ? Have a "Gem" day!