From Zelda Wiki, the Zelda encyclopedia
|The jewels are treasures from days gone by. It has been said that something will happen once all four of these mystical stones have been found.|
|— Oracle of Seasons Instruction Booklet|
Types and Location:
- The X-Shaped Jewel is hidden on a island off the Western Coast. To reach it, Link must use the Slingshot to light an offshore beacon, creating a bridge, and then drop a Mystery Seed onto a question-mark switch beyond the bridge. The "Black Beast" (a Mini-Moldorm) will rise consequently, and to pass, Link must defeat the creature. Link's reward for defeating the "Black Beast" is the X-Shaped Jewel.
- The Pyramid Jewel is hidden in one of two areas. In a non-Linked Game, it is at the end of a underwater cavern outside the Dancing Dragon Dungeon. In a Linked Game, it is tossed onto a ledge at the base of the Sunken Falls by Vire, who appears after Link opens a nearby chest.
- The Square Jewel can be found in 2 different regions dependent on how the game is played. In a non-linked or return-linked game it is in a cave in Spool Swamp. In a main-linked game, it is in a cave in Eyeglass Lake.
Interestingly enough, the four jewels correspond to the face buttons on Playstation controllers.