1 Star Legendary Gems

At rank 1 these provide 8 Combat Rating, 15 Resonance and a powerful effect. Increased Magic Find by 5% (unlocks at Rank 5). When ranking up they will gain +4 Combat Rating, increased Resonance and increased stats to their effect. At Rank 10 they will give 44 Combat Rating and 150 Resonance. These can be crafted from scratch using Runes, which can be found when doing Elder Rifts with Crests. The overall power of these gems is minimal compared to 2 and 5 star gems, but some of them are decent enough for use until you find better replacements. Crafting these to rank 10 can still be beneficial for Awakening items since they are by far the cheapest to rank up and easiest to obtain.