garnet
n. C / Un. a deep red stone that is often used in jewellery. It is a hard mineral that can also be used for industrial tasks like cutting or sanding.
n. a silicate mineral typically occurring in deep red crystals, though other colours exist. Frequently used as a gemstone or as an abrasive in industrial applications.
She wears a beautiful garnet ring that belonged to her grandmother.
The geologist identified the dark red crystals in the rock sample as garnet based on their hardness and structure.
While most commonly associated with the deep red pyrope variety, the garnet group encompasses a range of silicate minerals with varying chemical compositions and industrial utilities.
Uncountable when referring to the mineral substance; countable when referring to individual gemstones or specific mineral varieties.