925 Sterling Silver Gold Tone Light Blue Gem Teardrop Halo Pendant Hallmarked

Beautiful, sparkling, light blue, tear drop shaped, faceted gem at center. There is a halo of diamond simulants surrounding the center stone. Marked 925 on the back as well as CHINA. Light gold tone. There is a letter "R" stamped next to the 925 that is an unknown hallmark. Gentle preloved condition. Bundle with other items from my closet for discounts and combined shipping. Questions and offers are welcome 😁