Preville’s opal doublet, aquamarine and diamond earrings in 18-karat rose gold ($11,795)

Preville’s opal doublet, aquamarine and diamond earrings in 18-karat rose gold ($11,795)

This open bangle features pear-shaped labradorite and pavé diamond accents made in 18-karat white gold ($4,995).

A cushion-cut pink opal ring accented with diamonds and made in 18-karat rose gold ($3,375).

Preville’s blue sapphire and diamond “Imperial” pendant in 18-karat white gold ($8,475)

Preville’s opal doublet and diamond open bangle set in 18-karat white gold ($4,150)

These 18-karat white gold earrings feature emerald and green chalcedony accented with pavé diamonds ($10,495).

Preville’s oval-shaped sapphire split-shank ring with diamonds and 18-karat white gold ($11,675)

An oval boulder opal pendant accented with diamonds and set in 18-karat white gold ($4,655)

The “Arabesque” ring features emerald, moonstone and diamonds in 18-karat yellow gold ($6,360).

These long drop earrings feature dark blue boulder opal doublets and diamonds in 18-karat white gold ($9,770).