Intarsia is traditional method of using opals from different opal fields to make picture creation jewellery. the backing is generally opal ironstone and small natural pieces of opal are worked by craftsman to make scenic or modern designs. Blue crystal opal from lightning ridge is good for sky and green opal for landscape and Coober Pedy opal is good for sun with red fire. most is set in sterling silver jewellery. Source your intarsia opal pendants direct from opal wholesalers and jewellery manufacturers