| Year | Gemstones |
| 1st |
Peridot |
| 2nd |
Garnet |
| 3rd |
Jade, Pearl |
| 4th |
Blue Zircon, Blue Topaz, Amethyst |
| 5th |
Pink Tourmaline, Blue Sapphire |
| 6th |
Turquoise, Amethyst |
| 7th |
Yellow Sapphire |
| 8th |
Tanzanite, Pink Tourmaline |
| 9th |
Lapis, Tiger's Eye, Amethyst |
| 10th |
Blue Sapphire |
| 11th |
Citrine, Turquoise |
| 12th |
Opal, Jade |
| 13th |
Moonstone, Citrine |
| 14th |
Agate, Opal |
| 15th |
Rhodolite, Ruby |
| 16th |
Spinel, Peridot, Aquamarine |
| 17th |
Carnelian |
| 18th |
Aquamarine, Opal |
| 19th |
Garnet, Blue Topaz, Aquamarine |
| 20th |
Yellow Diamond, Emerald |
| 25th |
Tsavorite Garnet |
| 30th |
Pearl |
| 35th |
Emerald, Coral |
| 40th |
Ruby |
| 45th |
Cat's Eye, Alexandrite, Blue Sapphire |
| 50th |
Imperial Topaz |