Suzy Levian Sterling Silver Cubic Zirconia Oval Ring

Nordstrom Rack

Silver-toned metal, Large, clear oval central stone, General ring style and sparkle, Mid-range price tier

Charter Club Women's Cubic Zirconia Oval Halo Rhodium Ring

Macy's

Silver-toned metal, Large, clear oval central stone with halo, General ring style and sparkle, High priority retailer

925 Sterling Silver Oval Cut White Sapphire Halo Engagement Ring

Joancee Jewelry

Silver-toned metal, Large, clear oval central stone with halo, Pave-set band (plausible, but not confirmed in frame), General ring style and sparkle