Auriel's Bow part 8: Using Diamond and Emerald Paragons (TES V Skyrim) - YouTube
Skyrim Sapphire Paragon, But yes with the chest of unique items! Giants always drop a gem, it's a very high chance to be sapphire or emerald, and a chance to be flawless.
Emerald Paragon | Legacy of the Dragonborn | Fandom
Dawnguard: How to Get Emerald Paragon [Tutorial] - YouTube