Emerald Emerald Emerald is a gemstone and a variety of the mineral beryl (BeAl(SiO)) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate. The word "emerald" is derived (via and ), from Vulgar Latin: "esmaralda"/"esmaraldus", a variant of Latin "smaragdus", which originated in (smaragdos; "green gem"). Emeralds, like all colored gemstones, are graded using four basic parameters–the four "C"s of connoisseurship: "color", "clarity," "cut" and "carat weight". Normally, in the
Emerald toucanet fruit-eater, but will also take insects, lizards,and eggs. The emerald toucanet is a popular pet toucan. It is affectionate when hand-fed and loves to play and interact with its owner. Emerald toucanets are as quick to learn tricks as cockatoos. They are active and need a large cage for their size, including perches that they can hop back and forth on. They also require a high-fruit diet, without which they are susceptible to a disease of excessive iron storage that is similar to hemochromatosis in humans. Emerald toucanet The emerald toucanet or northern emerald toucanet ("Aulacorhynchus prasinus") is a species