I planned for jewelry to be 4 metals: copper, silver, gold, platinum. Find and use those colors for base rings, bracelets and necklaces.
I don't see any gem ore before being cut.
Gem list from lowest to highest: Turquoise, Garnet, Citrine(orange), Amethyst, Sunstone(yellow), Sapphire, Ruby, Emerald, Onyx, Diamond
Wands was thinking of making from stones mined, so would need wand ores.