Category: GIA Information
Sapphire - A Symbol of Sincerity and Faithfulness - GIA
Ruby - A symbol of Wealth and Nobility - GIA
Pearls and the GIA 7 Pearl Value Factors - GIA
GIA 4Cs of Diamond Quality - GIA
GIA's "PASSION FOR COLOURED GEMSTONES" Information Guides
| -Alexandrite | -Garnet | -Peridot | -Topaz |
| -Amethyst | -Jadeite | -Ruby | -Tourmaline |
| -Aquamarine | -Nephrite | -Sapphire | -Turquoise |
| -Citrine | -Opal | -Spinel | |
| -Emerald | -Pearl | -Tanzanite |