Gemstone Jewelry Individually Unique. Each handcrafted gemstone necklace is adorned with semi-precious flower(s). Some of the flowers are carved; others are created with the use of semi-precious components as 'petals' and leaves. Each piece is a one-of-a-kind creation. May be available in smooth or faceted Garnet, Amethyst, Peridot, Green Aventurine, Red Aventurine, Carnelian, Citrine, Black Onyx, or Tan Riverstone.