Mariana "Checkmate" Antique Silver Plated Flower Post Earrings with Swarovski Crystals Sterling Silver plated "Checkmate" Collection flower post earring with Black and Clear Swarovski crystals These are posts with friction back. They are 3/8 inch diameter. Lifetime unconditional guarantee! Coordinates with other pieces in our Mariana "Checkmate" Collection Made in Israel by Mariana