What Is Gemstone Luster?
by Dr. Joel Arem; Donald Clark, CSM IMG
Talc’s luster can range from pearly to greasy to dull. “Talc,” Argonaut Quarry, Ludlow, Windsor County, Vermont 2, by Stephanie Clifford. Licensed under CC By 2.0.
Table of Contents
Types of Gemstone Luster
Adamantine
Vitreous
Pearly
Silky
Greasy
Resinous
Waxy
Dull
Metallic
The Concept of Luster in Gemology
What is Polish Luster and Fracture Luster?
"Adamantine. Silky. Greasy? Gemologists use these and other evocative terms to describe gemstone luster. This simply means how a gem’s surface looks when it reflects light. For example, the brilliant mirror-like appearance of a diamond is called adamantine.
Types of Gemstone Luster
In the mineral world, luster comes in two main types: ... "
https://www.gemsociety.org/article/gems ... re-luster/