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
Aquamarine (novel) now grown very fond of Aquamarine, and she of them. Hailey and Claire arrive to take Aquamarine back to the ocean. They meet Raymond, who regrets that he cannot bid Aquamarine farewell before he leaves for Florida. Just then, a boy named Arthur falls into the swimming pool. Aquamarine rescues him, with the help of Raymond. Raymond, seeing her tail and thus realizing she is a mermaid, is utterly shocked, however, this discovery does nothing to impair his adoration of her. Hailey and Claire carry Aquamarine to the ocean and cast her into the water, where she is restored to