YAG (Yttrium Aluminum Garnet) is a synthetic gemstone created in laboratories, originally used for lasers and optics. But gem lovers quickly realized something:
color-change YAG is insane.

Its shift is often stronger than natural gemstones:

• Daylight: Deep blue-violet
• LED: Pinkish
• Incandescent: Intense red

Because it’s lab-grown, the clarity is perfect, and the color switching looks like turning on a filter in real-time.

It’s affordable, dramatic, and honestly one of the coolest synthetic gemstones ever made.