Ranging in size from 4-5mm, each strand is 13" long. This listing is for one randomly selected strand.
Ametrine, also known as trystine or by its trade name as bolivianite, is a mixture of amethyst (purple) and citrine (yellow/orange). The colour of the zones visible within ametrine are due to differing oxidation states of iron within the stone. The citrine segments have oxidized iron while the amethyst segments are unoxidized. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.
Mohs scale: 7