Ultrasonic cleaner: A machine that cleans jewelry by using a fluid that is vibrated at 20,000 cycles per second. When the vibration speed rises above the ultrasonic frequency level, bubbles explode and generate strong power, cleaning the surfaces and cavities of hard-to-clean objects. Ultrasonic cleaning does not scratch the surface or harm objects like many chemical or abrasive cleansers. Although it would be wise to seek professional advice before putting some gemstones into an Ultrasonic cleaner.

Unakite: An opaque stone composed of pink feldspar, green epidote, and quartz. Metaphysical Properties: Emotional balance, spirituality. Facilitates re-birthing process. Good for healthy reproductive system and pregnancy.

Uvarovite: An emerald green garnet composed of chromium lime. Named from the Russian Count Uvaroff. Uvarovite is almost never used as a gemstone. Distinguishing Uvarovite and Tsavorite is difficult, but an experienced gemologist can do it.