February Birthstone Amethyst - Antique and Vintage Jewelry Amethyst
April Birthstone: Diamonds in antique and vintage jewelry
May Birthstone Emeralds - emeralds in antique and vintage jewelry
August Birthstone Peridot - Antique and Vintage Peridot Jewelry
September Birthstone Sapphire - antique and vintage sapphire jewelry.
Birthstone October Opal - Antique and Vintage opal jewelry.
Birthstone December Turquoise - Antique turquoise jewelry and vintage turquoise jewelry
Antique Demantoid Garnet Jewelry
Pearls Part IV – Odd Shaped Pearls and odd Pearls
Rubies, spinels and other ruby-look-alikes
More about Rubies post #145
Amethysts Revisited - post 212
Amethysts Revisited 2 - post 213