• Available in sizes 10g (2.5mm) through 1/2" (12.5mm) • The wearable length from sizes 10g through 1/2" is 3/8" (9.5mm) to the O-ring groove and 7/16" (11mm) overall length • You will receive a pair similar to those in the photo. • These are sold as a pair. • Chakras- Root (1st), Heart (4th) • Metaphysical- Moss Agate is said to be a grounding stone that is very useful in balancing one's emotional state. • About- Moss Agate is a chalcedony with dendritic inclusions that are similar to a moss pattern. The stone varies from light to dark greens to a more transparent grey and black coloring which varies by the amount of trace minerals of iron and chrome oxide within the quartz base.