Mineral site, and from there further subdivided by the chemistry of the W site. The Y and Z sites can accommodate a variety of cations, especially various transition metals; this variability in structural transition metal content gives the tourmaline group greater variability in colour. Other cyclosilicates include beryl, AlBeSiO, whose varieties include the gemstones emerald (green) and aquamarine (bluish). Cordierite is structurally similar to beryl, and is a common metamorphic mineral. Sorosilicates, also termed disilicates, have tetrahedron-tetrahedron bonding at one oxygen, which results in a 2:7 ratio of silicon to oxygen. The resultant common structural element is the [SiO] group. The
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