"That's the Sun Keep you see on the southern continent. A Sun Stone, once the source of this world's power, was kept there. But when we began using our new energy source, it was sealed up just like the north palace. They claim we don't need the energy of this tired, old planet."
— the young Man in Kajar
The Sun Stone (太陽石 taiyōseki?) is a Key Item in Chrono Trigger. The stone requires constant exposure to sunlight for several million years before storing enough to generate power. When the stone dims from the use or lack of sunlight, it is known as Moon Stone. Able to store solar energy within its spherical surface, it releases beams of light when struck, as demonstrated by Taban during the Moonlight Parade in Leene Square. In an optional quest, this item is obtained by leaving the Moon Stone in the Sun Shrine from Prehistory to the Future.
The Sun Stone is an illustrious artifact with the ability to store elemental, magical power. It aided in the rise of Zeal and has been written into legends across the eras. It was the foremost source of the elemental energy and magic harnessed by the citizens and sorcerers of Zeal. It was also used to create elemental weapons and armor, including the Black Mail, Blue Mail, Red Mail, White Mail, Swallow, and other artifacts that were spread across the land in the Fall of Zeal. It is apparent that the people of Zeal once owed their well-being to the planet and her natural gifts; however, with the advent of the Mammon Machine, elemental energy usage was forbidden and the items created with it were sealed up in the North Palace. After 65,000,000 years, the Sun Stone was also probably growing dim at this time, leading to such statements as "we do not need the energy of this tired, old planet." Only Melchior retained skill in forging elemental items during this transition to Lavos's power, and in due time, the Sun Stone was sealed up in the Sun Palace. After Zeal fell, the Sun Palace lay submerged for 14300 years until it was uncovered by the heroes of time in 2300 A.D. In this time, the Sun Stone, now a dormant Moon Stone, was taken (but only after a fight with the Son of Sun, probably an elemental defense mechanism emplaced by Zeal).
The Moon Stone was left in the Sun Keep in 65000000 B.C., where, after being acquired by the Porre Mayor and subsequently recovered in 1000 A.D., it regained its former luster and was used by the party to create the Sun Shades (by Taban), WonderShot (by Lucca), and later, the Rainbow (by Melchior), fulfilling ancient prophecies that combining the Sun Stone with the power of the Rainbow Shell would lead to incredible weapons and items. It is unknown what became of the Sun Stone after this event; it was most likely kept in Lucca's possession.
The burning of Lucca's Orphanage was possibly housing the Sun Stone in the year 1015 AD. suggests dark circumstances if it were later recovered by Porre forces or even Lynx. However, Chrono Cross does not elaborate on this possibility.
|Chrono Trigger Items|
|Consumables||Potion | Mid-Potion | Hi-Potion | Ether | Mid-Ether | Hi-Ether | Turbo Ether | Elixir | Megalixir | Panacea | Athenian Water | Shelter | Ambrosia | Lapis | Barrier Sphere | Shield Sphere | Strength Capsule | Magic Capsule | Speed Capsule|
|Key Items||Petal | Fang | Horn | Feather | Seed | Jetbike Key | Pendant | Gate Key | Rainbow Shard | Chrono Trigger (Item) | Carpenter's Tools | Spiced Jerky | Dreamstone | Race Recorder | Moon Stone | Sun Stone | Ruby Knife | Yakra's Key | Doppel Doll | Toma's Spirits | Golden Sand | Golden Hammer | Prismastone | Saintstone | Reptmark | Waystone | Godwood | Steel Ingot | Sturdy Vines | Hearty Lunch | Rusted Blade | Lumicite Shard|
|Arena Items||Slops | Flameclaw | Seafang | Duskeye | Luxwing | Hawk Talon | Shield Cloak | Feral Wrath | Smoked Meat | Dried Mushroom | Sweet Banana | Millennia Fruit | Songbird Egg|
|Other||List of items|