Moldavite is a stone for all chakras but especially for heart and the third eye. Moldavite is a member of the tektite group. Moldavite formed with the crash of a large meteorite 14.8 million years ago. It represents transformation, cleansing and change on all levels. It does have an intense frequency trying to help you propel into your future. Some people recommend meditating with the stone once a day before wearing it regularly. Details: -adjustable 16-18 inch silver chain -all stones are around 6mm-8mm (please note each stone varies some so please allow for some variation)