Gemstone usually found in. For example, diamonds, which have a cubic crystal system, are often found as octahedrons. Gemstones are classified into different "groups", "species", and "varieties". For example, ruby is the red variety of the species corundum, while any other color of corundum is considered sapphire. Other examples are the emerald (green), aquamarine (blue), red beryl (red), goshenite (colorless), heliodor (yellow) and morganite (pink), which are all varieties of the mineral species beryl. Gems are characterized in terms of refractive index, dispersion, specific gravity, hardness, cleavage, fracture and luster. They may exhibit pleochroism or double refraction. They may have luminescence
Aquamarine Fukushima can see the top of the main tank. Aquamarine Fukushima The aquarium opened on 15 July 2000. The nickname "Aquamarine Fukushima" was selected in 1998 from a total of 4,722 applications. The 2011 Tōhoku earthquake and tsunami on 11 March 2011 resulted in power being cut off to the aquarium. Many fish died, but some marine mammals and sea birds were subsequently transferred to Kamogawa Sea World, to the south, Ueno Zoo in Tokyo, Tokyo Sea Life Park, Mito Sea Paradise, and New Enoshima Aquarium. Although the main building sustained only minor damage, outside pools were washed away, and there