Aventurine HEALING | CALMING | CREATIVITY Aventurine brings great physical healing. It soothes the nervous system, and calms anger and irritation. This listing is for ONE (1) Aventurine 20mm Heart. Approximate weight: .1 -.16oz Approximate dimensions: (20mm) .7" x.7" x .2" Please note, stones are natural and WILL vary in precise size, shape, color, pattern, etc., and may not exactly match photo.