Amazing ring with a gem quality, 'crystal' opal from Coober Pedy (SA). Rich colour play of orange, red, green and blue in a 'free-form' cut. Opal size is 12.2 x 9.4 x 11.5 mm and a weight of 3.5ct.  The Tanzanite is a natural blue, fancy trillion cut and weighs  .89 ct. Set in 18kt yellow gold total weight is 10.52 grams. Ring size is 'Q'.