- Forge together three +400 fire attack gems.
- Forge together three +400 ice attack gems.
- Forge together three +400 water attack gems.
- This should produce three rare elemental attack gems. Forge them together in this order: Fire - Ice - Water
It will not work if the fire, ice and water gems are not rare +500 gems or they were put in the wrong order. If so, the resulting gem will not be a Spectrum.
If 3 Rare Spectrum Gems are forged, the result is a Rare Spectrum Gem with +1000 damage, or 10000 damage on a solar-trans blade (right). The forging of the resulting plus +1000 gem with two subsequent +500 gems results in another +250 per forge (eg. 1000+500+500 >> 1250)(bottom-right).
Both the Rare Spectrum Gem and the Rare Darkfire Gem have a 10% successful effectiveness against bosses with Spectrum defense. The Solar Transport Energy blades provide damage amplification that helps counteract this, rendering them very effective against the Deathless for +1000 Spectrum or Darkfire gem.