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Diamond Weapon is a boss in Final Fantasy VII. It is one of the Planet's many Weapons. The party fights it as it approaches Midgar towards the end of the game. Its attacks include a foot stomp, a blast of magical energy, and its Diamond Flash, a Gravity-based attack with a three-turn countdown that also inflicts Silence.
Defeating Diamond Weapon in the PC version re-release unlocks the Diamond Weapon achievement. Doing so in the PlayStation 4 version earns Diamond Disintegrator trophy.
Stats
Normal
During Countdown
Encountering
The Diamond Weapon glitch lets the player avoid fighting the boss, but it will ruin the player's save file. If the player enters the menu and saves their game exactly when the battle against Diamond Weapon is going to start, and then loads their game normally, the Diamond Weapon has vanished. This leaves the player unable to finish the game as the barrier over North Crater is still intact, and the scene where the party is prompted to parachute into Midgar never triggers.
If the player attempts to fight Diamond Weapon by ramming it with the Highwind, Cid will yell at Cloud for trying to break the airship and demand they fight it on the ground, and the Highwind will be pushed back.
When Diamond Weapon reaches land, it will stop north of Midgar until the player engages it on the world map. Diamond Weapon only approaches Midgar when the player is viewing the world map; if the player is in the interior of the Highwind or the menu, it will not move.
Formations
| # | Formation |
|---|---|
| 980 | Diamond Weapon |
| 981 | Diamond Weapon |
Locations
| Midgar Area | |
|---|---|
| Midgar Wasteland | #980 (fixed) |
Battle
Diamond Weapon in battle.
Diamond Weapon's laser ray which hits with Fire damage deals 700+ damage to one target. Its foot stomp deals 1000+ damage, and it will use it on the party member with the highest current HP.
Diamond Weapon is immune to physical attacks until it opens up its armor if hit with a certain number of summons (either individually or W-Summon Materia) or any Limit Break (either attack or support); 2 if Diamond Weapon has over 15,000 HP remaining and 3 if it's 15,000 HP or less. At this point, it will use Countdown of three turns, and uses the Diamond Flash at the end of it to hit all party members for 7/8 of their current HP and inflict the Silence status, reverting its immunity to physical attacks. During the countdown it only uses its laser ray. Diamond Weapon never starts the countdown if no summons or Limit Breaks are used.
The party can steal the Rising Sun for Yuffie; this is the only way to get it.
When Diamond Weapon is defeated, it does not turn red and phase out like most enemies; the camera simply zooms in on its head and cuts to the battle results screen. This is because the party doesn't actually slay the Weapon, rather, they only hold it off until the Sister Ray destroys it.
Strategy
Diamond Flash.
Good spells to use during the battle are Bolt3, Trine, Magic Breath, Comet2, and Ultima. Since it is vulnerable to Slow, the player should use the Spider Web item, or equip the Time Materia (second level).
Diamond Flash can be annoying, as the player needs magic to continue attacking. Thus, it is advised to not use Limit Breaks; or, alternatively, bring immunity to Silence by equipping Ribbon.
Equipping a Fire Armlet or the accessory Fire Ring also helps to avoid being damaged by Diamond Weapon's laser ray. Alternatively, the party can link in the armor the Elemental Materia to a Fire/Ifrit Materia for this attack.
AI script
AI: Main {
- If (Count == 0) Then
- {
- Choose Random Opponent
- Use <Diamond Fire> on Target
- If (2/3 Chance) Then
- {
- Count = 1
- }
- } Else If (Count == 1) Then {
- Choose Random Opponent with highest HP
- Use <Foot Stamp> on Target
- If (3/4 Chance) Then
- {
- Count = 0
- }
- } Else If (Count == 2) Then {
- Print Message [Countdown]
- Choose Self
- Use <> on Target
- Diamond Weapon's IdleAnim = Countdown Stance
- Diamond Weapon's HurtAnim = Flinch (Countdown Stance)
- Stage = 1
- Choose Random Opponent
- Use <Diamond Fire> on Target
- Count = Count + 1
- Print Message [3]
- } Else If (Count == 3) Then {
- Choose Random Opponent
- Use <Diamond Fire> on Target
- Count = Count + 1
- Print Message [2]
- } Else If (Count == 4) Then {
- Choose Random Opponent
- Use <Diamond Fire> on Target
- Count = Count + 1
- Print Message [1]
- } Else {
- Print Message [0]
- Choose All Opponents
- Use Diamond Flash on Target
- Choose Self
- Use <> on Target
- Count = 0
- Stage = 0
- TempVar:L/SLimit = 0
- Diamond Weapon's IdleAnim = Normal Stance
- Diamond Weapon's HurtAnim = Flinch (Normal Stance)
- }
} AI: Counter - Death {
- If (Stage != 0)
- {
- Diamond Weapon's IdleAnim = Normal Stance
- Choose Self
- Use <> on Target
- }
- Diamond Weapon's IdleAnim = 20 (???)
- Choose Self
- Use <(Report)> on Target
- RunCmd 0x22/0x0F
} AI: Counter - PreTurn {
- TempVar:FlashLimit = 1
- If (Diamond Weapon's HP <= 50% of Diamond Weapon's Max HP) Then
- {
- TempVar:FlashLimit = 2
- }
- Diamond Weapon's Physical Immunity = On
- If ((Command is Summon or W-Summon or Limit) OR (Stage == 1)) Then
- {
- Diamond Weapon's Physical Immunity = Off
- TempVar:L/SCount = TempVar:L/SCount + 1
- If ((TempVar:L/SCount > TempVar:FlashLimit) & (Stage == 0)) Then
- {
- Count = 2
- }
- }
}
Behind the scenes
The designs of the Weapons in Final Fantasy VII are highly reminiscent of mecha from the Gundam franchise; the Diamond Weapon resembles the AMX-004 Qubeley.
Final Fantasy VII Remake has a side-quest called "Corneo's Secret Stash", where Cloud and his party are tasked with finding Don Corneo treasury. One of them is the "Diamond Tiara" 
, which is shaped after the Diamond Weapon.
Gallery
Etymology
In mineralogy, diamond is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is the birthstone for April.