January Birthstone Garnet - Antique and Vintage garnet jewelry for January
February Birthstone Amethyst - Antique and Vintage Jewelry Amethyst
March birthstone Aquamarine in antique and vintage jewelry.
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 I Origins
Pearls – Part II Kinds of Pearls
Pearls – Part III What to look for in Pearls
Pearls Part IV – Odd Shaped Pearls and odd Pearls
Rubies, spinels and other ruby-look-alikes
More about Rubies post #145
Coral Endangered Species - post 233