Vintage 5x7mm Opal Cabochon, gold over 925 stud earrings!

I got these at an estate and I knew I had to have them! These are gold over 925, and stamped "RSE" on the backs. They do not have the original backings, so I added some silicone ones. Each earring has a 5x7mm opal. They are also a little over .5" long. Each one has a wee little diamond right above the opal. Please inspect and enlarge the pictures to assess the condition of the item for yourself. Please ask any questions you might have. Vintage/Pre-owned/antique items are being sold as is. Pictures are not altered and colors have not been adjusted. Due to technical reasons, colors may appear differently on your electronic devices. Pictures may also be enlarged to show better detail. 💎gemstone, 14k, 10k, 18k, sterling, silver, gold, estate, ring, pendant, earrings, loose, natural, stone, genuine, synthetic, lab, diamond, moissanite, vintage, real, gemstone jewelry, engagement, anniversary, promise, wedding, plated, gem, necklace, brooch, fire, crystal, jewel, gift, authentic, collectable, affordable, tested, luxury, natural, opal, emerald, aquamarine, topaz, sapphire, tourmaline, zircon, spinel, investment, ruby, alexandrite, stamped, investment 💎