or Ma·ta·ra dia·mond
[ mah-ter-uh, mat-er-uh ]
/ ˈmɑ tər ə, ˈmæt ər ə /
a zircon heat-treated to render it colorless: not a true diamond.
Origin of Matura diamond
First recorded in 1875–80; after Matura, town in Sri Lanka
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020