Thulite + Pink Opal Copper Mohave Turquoise + Pink Australian Opal Amulet

Each product is sealed to protect the piece from copper's natural tarnish. The coating also makes it hypoallergenic and antimicrobial, yet it still may need to be polished every so often in order to maintain a nice shine depending on many factors like the amount of wear, excessive humidity, exposure to water, sunlight, sweat, etc.