There's a similar one up for 4 Exalts. Yours is a bit better, maybe 5-6 ex? But safe to assume it is max 5ex
Carrion Turn Two-Stone Ring 4 days ago
Level: 57
+14% to Fire and Cold Resistances
Adds 4 to 40 Lightning Damage to Attacks
+57 to maximum Life
+40% to Cold Resistance
+44% to Lightning Resistance
36% increased Elemental Damage with Attack Skills
crafted+9% to all Elemental Resistances