• Available in sizes 8g (3mm) through 1-1/4" (32mm) • The wearable length from sizes 8g through 00g is 3/8" (9.5mm) • The wearable length from sizes 7/16" through 1-1/4" is 1/2" (12.7mm) • The flares measure about 1/16" • You will receive a pair similar to those in the photo. • Chakras- Crown (7th)• Metaphysical- Opalite glass is said to enhance psychic abilities, and may help with spiritual guidance. It is said to be of great help with relationship guidance, can provide a positive outlook on life, and is a good remedy for bad temperaments and mood swings.• About- Opalite glass is not a naturally occurring mineral. It originally was manufactured in China as a substitute for moonstone. As a side note, natural opalite does in fact exist, although it looks nothing like the opalite glass. • These are sold as a pair.