Quest · Un'Goro Crater · Level 53

Crystal Yield

Progress

The Pylon table allows you to combine red power crystals with blue power crystals.

According to J.D.'s manual, this combination can be used to weaken an enemy's defenses.

Completion

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Arranging the crystals on the table, you carefully align the colors. As you push the last one into place, a burst of light fuses the crystals together.

The resulting combination is now yours.

Sources

Game Classic quest text

Look it up

Crystal Yield on Wowhead WoW Forever database
Crystal Yield on the Warcraft Wiki