This blue chalcedony necklace is perfect for a look that can be dressed up or dressed down, casual or formal. This gemstone called ‘chalcedony’, approximately 8mm by 6mm, is fastened by hand to make a soft aqua blue necklace in our San Francisco studio with careful craftsmanship. Details- Genuine Blue Chalcedony - Blue Chalcedony size: approximately 10 mm by 8 mm- Made in gold filled, sterling silver or 14k solid gold- Single size 16" or 18" - Let us know if you need a longer size Blue Chalcedony Properties:- It helps you speaking of your truth.- It stimulates your ability to learn new languages.- It encourages being light hearted and optimistic.- It's protective during times of political unrest. - It's a Throat chakra stone.