Turquoise is a beautiful BLUE-GREEN color that is often used in jewelry and art. It is also the name of a GEMSTONE, which is a mineral composed of hydrated copper and aluminum phosphate. The word turquoise can be broken down into two parts: 'tur' meaning 'BLUE' and 'quoise' meaning 'GREEN'. The crossword solutions for the term turquoise are 'aqua' (4 letters) and 'GEMSTONE' (8 letters). Aqua is a Latin word meaning 'WATER', and is often used to describe a light BLUE-GREEN color. GEMSTONE is a term used to describe a precious or semi-precious stone that is cut and polished for use in jewelry or other decorative items.