Prehnite Cocktail Ring. The soft lustre of this stone, the heirloom quality of the ring, really gorgeous on a Soft Autumn or Soft Summer woman's hand. IMO, green is the most beautiful colour on all 3 Summers, I would add True Summer. Hand shapes really affect how rings look and relate back to overall lines. This one, blunt yet rounded, crafty and artistic, for a YinNatural hand?