175 Carat Blue Aquamarine Rough Beryl Natural Mineral Gemstone Crystal Stone Cab Rock for Cabbing - Brazil You will receive exactly this Aquamarine Rough - 49mm x 33mm x 19mm / 1 15/16 x 1 5/16 x 3/4 Inches; 35g / 1.2 oz / 175 Carat (see photo, the photos are taken under bright light, some photos are taken wet, stand not included)! These Aquamarine crystals are natural, unheated, uncut and from Brazil. Aquamarine, named for the Latin phrase "water of the sea", is the blue to blue-green variety Beryl. Beryl also contains other gem varieties, including Emerald, and some lesser known varieties such as Morganite and Heliodor. Aquamarine ranges in color from a faint light blue to blue and bluish-green, with lighter colored stones being the more common type. Light green Beryl can be transformed into Aquamarine if heated to 750? F (400? C). Chemical Formula: Be3Al2SiO6; Color: Blue; Hardness: 7.5 - 8.0; Mineral Class: Beryl (Aquamarine); Aquamarine has a distinct greenish blue to blue color. Unlike emerald, light-colored stones in this color range are still called aquamarine. The stones that are richly colored are the most desirable, and the stones with a very pale color are made into inexpensive jewelry. Aquamarine differs from emerald in another way - it normally has far fewer inclusions and fractures. (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)