Customize the marquise cut stone in your necklace design! January: Mozambique Garnet (Dark red, AA quality) February: Amethyst (Dark purple, AAA quality) March: Aquamarine (Ice blue, AA quality) April: Diamond (Lab-grown, SI clarity, G+ color) May: Emerald (Lab-grown) June: Alexandrite (Lab-grown) July: Ruby (Lab-grown) August: Peridot (AA quality) September: Sapphire (Lab-grown, Dark blue) October: Tourmaline (Green, AA quality) November: Citrine (Yellow, AA quality) December: London Blue Topaz Marquise Gemstone Necklace For Formal Occasions, Formal Marquise Gemstone Necklace, Diamond Necklaces With Baguette Cut Gemstone, Diamond Baguette Cut Gemstone Necklaces, Luxury Marquise Cut Yellow Gold Necklace, Fine Jewelry Marquise Gemstone Necklace, Elegant Marquise Birthstone Necklaces, Elegant Marquise Birthstone Necklace, Luxury Marquise Gemstone Necklace