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 (novel) her to Raymond. To explain her acquaintance with them, they present her as a distant cousin. Raymond is awestruck by Aquamarine, with whom he spends the evening happily. Meanwhile, Claire and Hailey begin to embrace their future and rekindle their hope. At 9 o'clock, they take Aquamarine back to the swimming pool. As she leaves, Aquamarine gives Raymond a seashell, by which to contact her by speaking her name into it; she will hear this call regardless of their relative positions. Hailey and Claire sleep together in Claire's soon-to-be-vacant house, which has been made empty of furniture. They have by