Nice Quality Gem Matrix Opal Rub/Preform 19.66cts Fires/Crystal/Ironstones Queensland

I have for sale a Nice quality Rubbed/Rough Preform Matrix Opal from Opalton, Queensland. This one weighs 19.66cts and is 25x17x9mm. Bright thick crystal veins/Pattern through the material, lots of Blue/Green and some Orange Fires. The ironstone is sold/hard, it will cut a great doned cab, ideal pendant or collectiors stone.  Thanks for looking.,