The opal is wood replacement, where the wood has in this case been replaced with clear opal giving a beautiful 3d effect, like looking into a pool. There are lovely purple blue highlights. Opal measures approx 14mm x 8mm. Inside diameter of ring is approx 16mm.  Ring size approx US 5.5

This is lovely piece with it's sparkling green opal and ironstone and potch patterns. Measures approx 24.75 x nearly 16mm x 3mm

Bezel set in Sterling Silver this beautiful piece of crystal opalised wood has a look through, look down into it's depths appearance. Opal measures 11mm x 9mm. Inside diameter of ring is nearly 17mm. Approx size US 6.

Opal wood replacement with mauve blue green sheen which deepens when placed on your finger. This is a really beautiful piece. Opal measures approx 16mm x 10.5mm. Inside measurement of band measures approx 19mm.

This is a beautiful piece of opalised wood with flashes of blue and green. Softly undulating surface to follow the opal.  Measures approx 72mm x 27mm x 8mm at thickest.