Check the listing for details. 14K Solid Yellow Gold Square Princess Cut CZ Birthstone Stud Earrings All Size. Condition: New with tags. Listed at 39.92 USD. This is 14K Solid Yellow Gold Princess Cut CZ Birthstone Screw Back Stud Earrings that have become a classic. You can wear them day-by-day they will match with any close. The earrings are studs with screw back and the post length is 9.25 mm. The stone size 3mm to 7mm. All stones are in order according to months. January - Red color Garnet (Lab Corundum), February - Purple color Amethyst (Cubic Zirconia), March - Aqua color Aquamarine (Lab Spinel), April - Clear color Diamond (Cubic Zirconia), May - Green color Emerald (Cubic Zirconia), June - Lavender color Alexandrite (Lab Corundum), July - Dark pink color Ruby (Lab Corundum), August - Green light Peridot (Cubic Zirconia), September - Blue Dark color Sapphire (Lab Spinel), October - Pink color Pink Tourmaline (Cubic Zirconia), November - Yellow color Topaz (Cubic Zirconia), December - Blue color Zircon (Lab Spinel). (stones sometimes can be little darker or little liter than on the picture). This pair of earrings comes with a free gift box (colors of gift box will be chosen randomly). We guarantee that our product is 14K Gold.