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) with Raymond, after which she must leave. To compensate for her nudity and lack of legs, they plan to dress her in a long blue gown and place her in a wheelchair. Before the meeting, the two girls confide their story in Claire's grandfather, Maury. He believes their story because of his own encounter with a mermaid once. He takes them to the Capri Beach Club, where they organize the table and food for Aquamarine and Raymond. They then lift Aquamarine out of the pool – an operation wherein Claire must overcome a hesitation to enter water – and introduce