Amethyst Periastron Kappa is a limited unique gear published in the marketplace by Roblox 
Roblox is a notable creator or influencer verified by Roblox Corporation. Learn more. on September 19, 2012. It could be purchased for 2,000 Robux and had a stock of 150 copies. It is the fourth variant of the Periastron series. As of July 11, 2025, 60 copies remain available and it has been favorited 27,757 times.
History[]
Release history[]
| Location | Available from | Available until |
|---|---|---|
| MarketplaceThis item can be purchased in the Marketplace. See all (1417) · Random | September 29, 2012 | Still available |
Appearance[]
It is a sword with a light to dark violet gradient to the blade and has an azure handle with a silver end. The middle features a silver striped guard with a gem in it. It also emits purple 
Sparkles that will appear on the avatar while worn and equipped in-game.
Avatars with R15 enabled also have a unique stance while wearing the gear, regardless of animation packages worn.
Function[]
When in-game, the user can click once to swing the blade or double click to Lunge and strike forward horizontally to their mouse/touch location. As an extra effect, while lunging with the sword, it will leave behind a trail of purple waves behind the blade.
Unique Abilities[]
Comet Crash[]
Pressing Q will summon a huge amethyst meteor to start flying through the sky for 15 seconds with a cooldown of 1 minute after the ability ends, any anything within its radius of 750 studs will lose gravity changes, BodyForces or BodyVelocity for the rest of the ability duration (including parts, such as those from weapons), this checks every 0.1 seconds so there is a window where they are usable but it usually isn't exploitable.
Meteors[]
Pressing E will cause meteors to fall down over the course of 10 seconds with a 35 second cooldown.
Every meteor deals 40 - 90 damage each with a huge hitbox. The area the meteors spawn is 512X512 Studs with the player being in the middle of that area, and meteor sizes deplete over time while losing hitbox area upon crash and reducing damage dealt, a fresh meteor can deal up to 90 damage while a near-despawning meteor can deal as low as 40 damage. Meteors are very effective for covering large areas and dealing heavy damage to anyone hit as well as offering good AOE to some games that involve the use of NPC's scattered around.
Tech Skill[]
Chartreuse's Deflect Barrier can deflect your own meteors to other Players, increasing their speed and putting the meteor on a direct path to the opponent to deal a large amount of damage.
- If a meteor directly hits an opponent (without colliding on terrain), it instead deletes itself while guaranteeing the Max damage DOUBLED (180 total) on that opponent only. This requires immense luck and skill on the user's end though.
Comet Crash can edgeguard an opponent via getting them off map/stage and using the ability when they're above the void.
Gallery[]
Trivia[]
This section is a trivia section. Please relocate any relevant information into other sections of the article.
- As of January 8, 2023, the Amethyst Periastron Kappa is by far the most expensive of the Periastron series.
- Like all other Periastrons, the core dependency is named Green Laser Sword.