Crystal Cave

Crystal Ember

Crystal Pickaxe - Instead of going left after the first invisble path go straight down another invisble path and it's on the left past a clam

Bequeathed Light Soul Shard + Moonlight Greatsword - Havel kills Seath

Blue Titanite Chunk - to the left just after the last invisble path before Seath

Soul of an Exiled Witch - Behind some crystals on the solid area with a clam between the invisible paths

3 crystal lizards in the drop down between the invisible paths
 * Twinkling Titanite 2 + Green Titanite Shard 2
 * Twinkling Titanite 2 + Green Titanite Shard 2
 * Twinkling Titanite 2 + Blue Titanite Chunk