Diamond Simulant Stud Earrings with a Halo of Smaller Diamon Simulants

These diamond simulant earrings feature a prong set center stone surrounded by a halo of channel set diamond stimulants. The estimated carrot weight of each center stone is about a half carat. They are set in a silver looking metal. I cannot find any 925 mark stamped on the earrings so I cannot confirm if they are silver. These earrings were purchased by my mom back in 2016 and likely come from JTV but I do not have a sticker or item number confirming this.