Ruby Filter Moore Dual-function design combines two groove

Dual-function design combines two groove types on a single upper roller

scrubbed clean of smoke and particulate matter

use a 3M light deburring wheel or medium-grit emery paper

Two AAA batteries are included so you can get started right away

you are limited only by your imagination and ingenuity

Ruby Filter Moore Dual-function design combines two grooveA ruby filter is a simple yet effective gemological tool used to help differentiate natural rubies from ruby simulants and look alike stones. By altering the way certain wavelengths of light are viewed, it assists in identifying characteristic color reactions during examination. Features Assists in distinguishing rubies from ruby simulants Highlights characteristic color reactions under filtered light Compact and easy to use in bench or field settings