Color Master Stone

This is Standard D-M Diamond Color CZ Master Grading Set, housed in a clear white case. This set is a crucial tool for jewelers, gemologists, and anyone involved in diamond evaluation or training.

Components: The set primarily consists of 10 precision-crafted cubic zirconia (CZ) stones, representing the GIA D-M diamond color scale, from colorless (D) to faint yellow/brown (M). Each stone is typically laser-inscribed on the girdle with its corresponding color grade for easy identification and comparison.

Case Design: The CZ stones are organized within a sleek white kit box with a clear top and often a built-in grading tray for convenient comparison and secure storage. Some advanced versions feature illuminated grading cases with integrated daylight and UV LEDs for optimal viewing conditions.

Purpose and Application: This master set is used to accurately grade the color of diamonds by visually comparing them against the pre-graded CZ master stones under controlled lighting. It’s widely used in:

Jewelry appraisal institutions

Training institutions for gemologists and jewelers

Retail stores for grading and sales presentations

Professional diamond laboratories for precise color evaluation

Material and Quality: The CZ stones are designed to closely emulate the brilliance and optical properties of natural diamonds, providing a cost-effective and reliable alternative for color grading. Some high-quality sets utilize advanced technologies like “ColorLast” to ensure permanent color saturation of the CZ stones.