This Australian Boulder Opal halo ring has a main gem that glows with different colors under lights and sunlight. It is surrounded by sparkling all-natural White Zircon in a halo that look better than diamonds. Total Carat Weight: 1.85 cts Style: Halo Base Metal: Sterling Silver Setting Style: Halo Material: Gemstone Type: Ring Secondary Stone: Natural White Zircon Main Stone Color: Blue w/multicolors Main Stone Treatment: Not Enhanced Metal Purity: 925 Main Stone: Australian Boulder Opal Triplet Main Stone Creation: Natural Metal: Platinum over 925 Sterling Silver Brand: Unbranded Ring Size: 8 Main Stone Shape: Oval 9x7 mm