Crushed Turquoise & Coral Inlay Ring Rings and color-changing varieties do exist

and color-changing varieties do exist (often blue to purple)

The Stones: Tiger's Eye

loop folds out allowing brooch to be worn as pendant

Opal plays well in the sunlight

Crushed Turquoise & Coral Inlay Ring Rings and color-changing varieties do existA Bit About The Piece: Turquoise and Coral Crushed Inlay Pieces set in Sterling Silver Details, details The Gemstones: Turquoise: stone cut: crushed inlay pieces set into triangular shapes stone measurements: 5. 83 x 3. 64mm Coral: stone cut: crushed inlay pieces set into diamond shaped pieces stone measurements: 4. 40mm The Setting: Bezel Set Sterling Silver Setting Ring Design: Bezel set turquoise and coral crushed inlay set in sterling silver . 925