Art Nouveau/Vintage craved celluloid pearl rose set/lucite earring/necklace lot

Nice Vintage Tiffany blue lot Amazing stunning Blue Rose craved celluloid and pearls necklace with matching clip on earrings set The necklace has adjustable size chain Then A vintage Nouveau/style unique nice Turquoise silver and seed pearl necklace untested so unknown materials but has a heavy silver backing so I’m selling as silver tone 2 B safe Both are in good-great vintage condition only slightest signs of any ware/age Then a very unique rare large Art Nouveau era buckle? It’s that Era style buckle if look on the back it has silver flowers and Blue/Turquoise Cabochons in a design Its untested So I’m unsure on the materials I see no mark unknown material so selling as silver-tone in case may be silver it has some weight It’s in fair condition because looks might of been welded in a spot or 2 thats not connected now (view pics) but it looks good the buckle loops are in tack Then Moonstone lucite clip on earrings in good vintage condition Please review all pictures 4 details/size