Blue Obsidian
Glass Ghost Gem



Earthling Earthling

Gem Weapon



SexlessIcon Sexless

Gender Identity

FemaleIcon Female

Romantic Orientation


Gem Type


Gem Location

Left side of chest

Professional Status

Blue Diamond (Formerly)

Personal Status


Relationship Status








Blue Obsidian is the healed version of Glass Ghost. She is a former Homeworld nurse who served under Blue Diamond. She was corrupted by the Corrupting Light, and has spent thousands of years wondering around Earth aimlessly.


Blue is short with a curved build. She has sky blue skin, thin lips, a long nose, and long, thick, frosted white hair that extends to her back.

Her outfit consist of a dark blue-green sash around her waist, a light green-blue vest, white sleeves, white gloves, grey leggings, and off-white colored boots. Her gemstone is located on the left side of her chest.


Blue Obsidian is a very calm, level-headed Gem. She has tons of patience, and will try her best to keep calm when addressing a serious situation. She can be very forgetful, as she forgets a lot of information from her past; this is because of her amnesia. She can come off as a bit of a pushover, as she is very lenient when it comes to most situations. While sometimes she can come off as cold, she is a truly kind Gem who cares for her friends and those around her. She enjoys spending most of her time alone.


Blue Obsidian was made sometime during the rebellion. She was a gem who worked under Blue Diamond, and was a nurse during the rebellion on Earth. She would transfer supplies to wounded gems or other gems who were in need. One day, when Blue Obsidian was flying back to Homeworld, she was blinded by a bright light (the corruption light), that caused her plane to crash, and led to her to becoming corrupted.


Blue Obsidian has standard Era-1 Gem abilities, including the ability to invoke a weapon, fuse with other gems, retreat to her gemstone, change shape, and strength, agility, speed, and skill beyond human capabilities. As Blue Obsidian just recently became uncorrupted and is still slightly suffering from amnesia, she does not remember most of her skills and abilities, as she did not fight very often even before she became corrupted.

Unique Abilities

  • Hyalokinesis: Blue Obsidian has the ability to shape and manipulate glass. She is able to replicate the missing shards of a gemstone with this ability. Note that this does not apply to gemstones that are already shattered.


Blue Obsidian has yet to fuse with another Gem. However, if she were to fuse with another Gem, these would be the resulting fusions.



Image Description
Blue Obsidian Gem
Blue Obsidian's gemstone is located on the left side of her chest, and is in the shape of a shard of glass.


Natural Blue Obsidian

Blue Obsidian in real life.

Gemstone Information
  • Obsidian was named after Obsius, a Roman who discovered a similar stone.
  • Obsidian forms when lava cools and whilst it is mineral-like, it is not considered to be a true mineral because its composition is too complex and it does not have a crystalline structure.
  • Obsidian has some similarities to quartz, due to its silicon dioxide content.
    • However, quartz is a harder material than obsidian, at 7 on the Mohs scale, whereas obsidian has a hardness of 5 to 5.5.
      • Additionally, obsidian has a lower density and refractive index than quartz. Also, obsidian is singly refractive whereas quartz is doubly refractive.
  • Obsidian is thought to be a powerful stone that can offer protection against negativity. It is sometimes called "the stone of truth" because it encourages the surfacing of secrets and hidden emotions.
  • Despite a lot of Blue Obsidian being man made, there is natural Blue Obsidian available. Its simply very rare. There have recently been finds in both Greece and the Atlas Mountains in Morocco.


ve Gems
Quartzes Banded AmethystCloudy AmethystDark Violet AmethystSwirls
Sapphires PaddyViolet Sapphire
Rubies Six
Diamonds White DiamondYellow DiamondBlue Diamond
Pearls Sea Salt Pearl
Topazes Blue Topaz
Fusions Ayanite FusionCrimson SapphireSky Blue Opal
Corals CoralHomeworld Coral
Bismuths Confederate BismuthPink BismuthRainbow Bismuth
Ayanites AyaniteEmo AyaniteCat AyaniteAyaprotexy
Kyanites KyaniteKyara
Other ApoteryxBlack HiddeniteBlue ObsidianCacoxenite


ve Opal's OCs

Sea Salt navbox Dark Violet Amethyst navbox Coral navbox Six navbox Cacoxenite navbox Kyanite navbox Blue Obsidian navbox Coral (homeworld) navbox Emo Ayanite navbox Violet Sapphire navbox Paddy navbox Speckles navbox Swirls navbox Kyara navbox White Zircon navbox Kunzite navbox

SBO navbox AyaniteFusionGemNavboxImage Crimson Sapphire navbox