Peach moonstone necklace in platinum over sterling silver

This is a brand new pendant necklace that was in its original packaging before being removed for photos.  Natural peach moonstone cabochon in the middle , surrounded by multiple marquis gemstones that include amethyst, fire opal , blue topaz, peridot, citrine, tanzanite, rhodolite garnet, and zircon. Prong set in a platinum plating over sterling silver setting. Chain measures 20 inches. Lobster claw clasp . 9.63 ctw 925 Retail value is $320