Medallion Trading Company HUGE 18K YELLOW GOLD SOLID AUSTRALIAN OPAL RING- SIZE 9 Condition: Very nice vintage condition. No cracks in the opals. Professionally cleaned and polished. Markings: 18k, Makers Mark Ring Size: 9 Total Weight: 9.7 grams Gemstones: (1) free from solid (one single stone) Australian Lightening Ridge fire opal measuring approximately 22mm by 10.5mm by 4.5mm. The colors are red, orange, green and blue with a lot of color play throughout the stone. More colorful in person than pictures can capture! The stone is set in a solid gold setting but you can easily see that the stone is a solid opal and not a doublet or layered in any way. Country/Region of Manufacture: Australia Style: Statement Main Stone Color: Blue Ring Shape: Free Form Main Stone Treatment: Not Enhanced Jewelry Type: Ring Metal Purity: 18k Setting: Prong Lot: No Gender: Female Main Stone: Australian Fire Opal Sizable: Yes Main Stone Creation: Natural Metal: Yellow Gold Ring Size: 9 Main Stone Shape: Cabochon UPC: Does not apply