Bottles of Sand are scattered throughout Lunacid - Tears of the Moon. Each of these bottles can be smelted into a single Glass Key, which opens a door in the treasury of The Kingdom of Lyria hub area. In order to smelt the keys, interact with the fireplace at the entrance to the treasury (do not try to use the item on the fireplace, actually interact with it like you're talking to an NPC).

This Bottle of Sand is found in the crypt area of the Abandoned Mines, on the ground in plain sight.

This Bottle of Sand is found in the far northwest corner of the Abandoned Mines, on the ground in plain sight.

This Bottle of Sand is found in the spider nest area. To get to this area, you will need to equip the Symbol of Royalty accessory, and interact with the magic barrier to the south of the warp crystal.

This Bottle of Sand is in the caves in the far southeast section of the Lyrian Aqueduct. The entrance to these caves is on the southwest side of the map, and to reach it you'll need to have found and played the Harp of Harmony.

This Bottle of Sand is in the far northwest corner of The Road of Ruin. In order to reach this area, you'll need to have placed the water crystal, and use The Ring of Fog accessory to cross the deadly poison miasma. It is just outside of the room with a lever that opens a door to the boss of the area, on a balcony leading to a broken bridge.

This Bottle of Sand is found in an alcove on the upper level of the prison area of Castle Scawl. In order to reach this bottle, you will need to come via the path from the west.

The final bottle of sand is hidden behind a false wall in one of the cells in the prison section of Castle Scawl. In order to open the cell, you'll need to use a lever a few rooms past this cell and return. The bottle is on a body behind this secret door.

The rewards hidden within the treasury are as follows. Each door is behind the previous one, so you have to unlock these in order.

1 - Crystal Shard
2 - Health Vial
3 - Morningstar (Weapon)
4 - Rock Sling (Spell)
5 - Soul Pod (Gives a permanent +5 to both Strength and Magic)
6 - Triple Fang (Weapon)
7 - Eremite Breastplate (Best in Slot chest armor)

• Complete maps of Lunacid - Tears of the Moon
  
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