Desert Island Treasure Cache

The Desert Island Treasure Cache is an item that can be dug up with a Shovel on any Desert Island. It is generally hidden under a pile of sand marked with a red or black cross. It can be turned into a Treasure Hunter to receive a quest reward.

Drops

 * Gold (common)
 * Rough Topaz (uncommon)
 * Rough Ruby (uncommon)
 * Rough Diamond (rare)
 * Ornate Gemstone Ring (rare)
 * Chronometer (rare)
 * Ceremonial Chest Key (extremely rare)

Trivia

 * Obtaining this item for the first time lets you complete the "Treasure Tracker" Steam achievement.
 * Shares the same drops with Natural Island Treasure Cache.