None that I've tested.Edit:
The big problem with using Relics as a Melee Sorc is weapon restrictions. Many Relics require certain weapon types, but you're stuck using a Warp Blade if you want to also use your native skills. That said, you still have some options. I'll use this post as a sort of progress report on Relics I've tested that actually work with a Melee Sorc.
GOOD RELICS:
Relic (Divine Judgment)
Relic
Required Level: 75
+(9 to 16) to Divine Judgment
+(21 to 25) to Strength
(2 to 4)% to Strength
= it won't make you a Paladin, but it's better than anything Melee Sorc has, especially against single targets.
SUPPLEMENTAL DAMAGE RELICS:
Relic (Shower of Rocks)
Relic
Required Level: 75
+(2 to 7) to Shower of Rocks
Weapon Physical Damage +(70 to 90)%
Physical Resist (1 to 2)%
= decent. The cooldown prevents it from being a straight replacement for anything, but it's a pretty good supplement against tanky single targets.
Relic (Hive)
Relic
Required Level: 75
+(11 to 21) to Hive
Maximum Poison Resist +(1 to 2)%
+10 to Frozen Heart while Carrying Periodic Relics
(Hive - Nova Charge - Path of Flames)
= okay for supplemental damage while in melee range.
Relic (Path of Flames)
Relic
Required Level: 75
+(6 to 13) to Path of Flames
Fire Resist +20%
+10 to Frozen Heart while Carrying Periodic Relics
(Hive - Nova Charge - Path of Flames)
= same idea as Hive, but doesn't seem as good.
Relic (Fortress)
Relic
Required Level: 75
+2% to Runemaster Defense Bonus while Fortress is Active
+(11 to 22) to Fortress
+1000 Defense
= not great on it's own, but it is another source of supplemental damage, so...
RELICS THAT WORK, BUT HAVEN'T REALLY BEEN TESTED BEYOND THAT:
Relic (Hammer of Zerae)
Relic
Required Level: 75
+250 to Maximum Lightning Damage
+(7 to 16) to Hammer of Zerae
= Requires a Scepter, but since Moonstrike works with Scepters, this Relic might be workable.
OTHER RELICS:
Relic (Banish)
= Seems to help boost clearspeed a little.