Estenza’s “floating ring” features rutilated quartz and diamonds in 14-karat yellow gold ($2,550).

Estenza’s “floating ring” features rutilated quartz and diamonds in 14-karat yellow gold ($2,550).

This drop pendant is set with amethyst, rose quartz and diamonds with gallery-work accents, made in 14-karat yellow gold ($1,650).

A sugarloaf smoky quartz cabochon is accented with pavé diamonds and underside gallery work in 14-karat rose gold ($2,700)

These drop earrings feature sugarloaf-shaped rutilated quartz, diamonds, peridot, and a pavé diamond halo on the back (not seen in this image) made in 14-karat yellow gold ($3,750).

Estenza’s ring features a single sugarloaf-shaped rutilated quartz with pavé diamonds and underside gallery work in 14-karat yellow gold ($2,700).

Estenza’s amethyst drop earrings with diamond accents are set in 14-karat gold ($3,450).

A sugarloaf-shaped smoky quartz surrounded by cabochon amethysts and diamonds, all set in 14-karat yellow gold ($1,500)

Estenza’s tear-drop pendant is centered on a sugarloaf-shaped rutilated quartz with diamond accents in 14-karat gold (1,950).

These “floating earrings” feature a rutilated quartz and diamond jacket, which can be removed so that the gold ball can be worn alone as a stud. All are set in 14-karat gold ($3,450).

This ring features a smoky quartz “pyramid” with an amethyst surrounded by a diamond halo, all in 14-karat yellow gold ($1,350).