Flawless Amethyst 00 e. One flawless sapphire is one of two items needed at a forge to create a silver sapphire necklace.

Soul Gem Fragment. Seven guaranteed gems are found in seven different locations: Merchants do not stock diamonds, emeralds, or any flawless gems.

One flawless amethyst can be used at the imbuing chamber device to create six shock spider scrolls. From Skyrim Wiki.