20 piece pack. The thick inner layer of the shell is composed of nacre (mother-of-pearl), which in many species is highly iridescent & gives rise to a range of strong changeable colours, making the shells attractive as decorative items, jewellery and as a source of colourful mother-of-pearl. Abalone has a calming influence and creates serenity in personal and work settings. Abalone challenges us to look deep within ourselves. Shell's healing power is connected with the challenge of learning to value & appreciate one's self. Like crystals, shells responds slightly differently to each person's energy & are unique in their assistance.