search
  • Sign In
    Sign Up
  • English speaking customer support only

    1-800-464-1640

    International:

    +66-39601289

  • Change Language
  • USD
  • CART
FREE SHIPPING
Frequently Asked Questions (FAQ) / Color Change Gems

Why do some gems show a color change?

Color Change Gemstones Color change gems have two approximately equal sized transmission windows. A blue gemstone appears blue because it absorbs all frequencies of light except for blue. A gemstone that absorbs both blue and red light will appear blue when the light is rich in blue wavelengths (e.g. in sunlight or fluorescent light) and red or purple when the light is rich in red wavelengths (e.g. in incandescent light).

View all of our color change gemstones here.

Return to FAQ HOME

STAY IN TOUCH | NEWSLETTER
*You're signing up to receive GemSelect promotional email.
Partners and Trust Payment options

Switch to Mobile Version

Copyright © 2005-2024 GemSelect.com all rights reserved.

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

796

Continue Shopping
Checkout
Continue Shopping
Checkout