Left: Ruby, diamonds, 22 karat yellow gold. Right: Tourmaline, 22 karat yellow gold.

Tourmaline, diamonds, 22 karat yellow gold.

Diamonds, 22 karat yellow gold and 18 karat green gold.

Bottom: tourmaline, aquarmarine, blue moonstone, opal. Top: Apricot moonstone. All are 22 karat yellow gold and 18 karat green gold.

Jasper, 22 karat yellow gold and 18 karat green gold.

L to R: freeform moonstone, blue chalcedony, boulder opal, tzalvorite. All are 18 karat and 22 karat gold.