Spiral Ring Set Amethyst Sterling Silver. Meadowlark. $439.00. Or 6 payments from $73.17What's this?. Hypnotic spirals, nature’s favoured form for the transmission of energy, the spiral radiates out and draws in simultaneously, infinitely and eternally. This ring has a square band with a bridge up to a flat surfaced spiral in gold, set with a single stone in the centre. - Sterling Silver set with Amethyst stone. Size. 8 - $439.00. Quantity.