Cairngorm

Gems do not show much curiosity about things that are not related to their own tasks. However, they do love flowers. They collect bouquets during sensual moments, have handmade flower vases, and grow a variety of different types of plants and flowers under the school's roof. When Fos received(a) golden hands, he(a) formed golden flowers to show the other gems that the hands were not dangerous.

They care for each other and will try to protect each other from the Lunians, even sacrificing themselves if necessary. All of them love their only teacher unconditionally. Sometimes the gems ask for hugs, and they have shown attempts to gain his attention or show jealousy towards other gems who receive his attention. The gems have no blood. They just fly apart into fragments. Plus, they can't feel pain, only vibrations. The vibrations are unpleasant and spread throughout the body, it is similar to pain, but just very unpleasant. They are very strong, unlike people. Even a unit on the Mohs scale or hardness is much more stable and stronger than the human form. They can't be sewn up, they can only be glued, but inclusions in the bodies of gems are not very good from this. Sometimes, due to clumsy restoration, a gem can become weaker morally or physically, or simply can feed on light worse. Protective body lotion against the effects of salt water. Helps keep powder in place and preserve the crystal structure of gemstones intact. Their bodies are able to withstand the pressure of water even at great depths, because they do not need to breathe or eat, but they are amazed by the inclusions that feed on sunlight. Gems always come in pairs if they are patrolling and guarding the island. Only Phos had two partners in her team, because they were twin brothers. And they knew each other very well.

With the exception of Adamant, who wears a Buddhist monk's kimono, the gems wear uniforms sewn by Red Beryl for their daily lives. Their winter clothing resembles women's Japanese kimono. Red Beryl, who is responsible for the clothing, tends to favor feminine items.

Due to their unique structure, they have no concept of true death and tend to cherish short-lived items such as hemp and paper. Gems think that being mortal like other organisms is inconvenient, and some (such as Bort) believe that gems are superior to others. Since they are technically immortal, they think that there is a chance that the stolen gems will be returned from the moon, even if it means that it happens in parts. Some gems do not show too much emotion about the loss of their brothers, perhaps because they can be returned

Except for Teacher Kongo, the gems have no idea about humans. He sometimes refers to human behavior, such as the tears of Phosphophyllite, calling them "the remnants of an ancient species' garbage."

The Gems live in a spacious school building with a large bell that they use as a signal. The school uses jellyfish as lighting instead of human technology based on electricity or fire. They also use traditional tools for hand-weaving and craftsmanship. They are skilled in making textiles, crafting tools, making paper and pencils, and developing science in medicine and herbs (but related to gems).

Adamant teaches the young Gems everything they need to know, although the school does not seem to have organized classes. Each gem is entrusted with a role or roles that they are suited to, although almost all of them are fighters and have patrol duties throughout the day. The various roles shown so far include patrol, healthcare and medicine, blacksmithing, strategy, and planning.They have their own "dormitory" to sleep in at night, and they spend the winter in one large room. In their free time, they can play card games that they have learned from the Master or that they have invented themselves. Every time the Lunarians arrive, the Gems must ring a bell to alert everyone to the situation (for example, six rings on the bell indicate that the Gems should stand in their positions and wait for instructions). Patrol teams usually consist of two Gems, one of whom fights while the other runs after Adamant. Usually, after the bell rings, all the gems come with him, although he can always dispel the Lunarians on his own. Every morning, they have a morning meeting, which is important for those who are patrolling that day. Most of the gems use the international/English name of the gems for their own names, but the Japanese use "Kongo" for "Adamant" and "Shinsha" for "Cinnabar".

According to Adamant, the planet was destroyed after colliding with a meteorite for the sixth time. This created six moons, leaving the Earth as a depleted shadow of its former self. With nothing left but a single beach, all life fled into the ocean. Some creatures that had flourished when the moon was still one were too slow to escape and sank into the seas. They were consumed by tiny creatures at the bottom of the ocean, transformed into inanimate objects that had crystallized over the centuries, and rose to the surface on the Beach of Beginnings. In rare cases, this leads to the successful formation of a gemstone. Gemstones must be protected from an endless number of hunters from the Moon, the Lunarians, who steal gemstones and apparently use them as jewelry. At the beginning of the story, no gemstone has ever returned from the Moon. According to the legend of Amirabilis, there were once beings called humans who lived and preserved the Earth until it was destroyed five times. When the Earth was destroyed a sixth time, the humans went underwater. There, they split into three parts: spirit, flesh, and bone (i.e., they evolved into three different species). Amirabilis is said to be the flesh that inherits the ability to reproduce and pass on its knowledge; the gems are the bone that returns to the earth, making a contract with microorganisms and gaining the ability to live for millennia; and the Lunans are the spirit, forever wandering in an attempt to restore their flesh and bone

The Lunarians are golden clouds that inflate when you destroy them. They seem to deflate.

Their memories (and personalities, presumably) are stored in the gemstone that makes up their body. Thus, the loss of any part of their body will result in some memory loss. Their lost body parts can be replaced with other materials if they are compatible. However, gemstone hair contains minor inclusions, so this is not a significant issue. They can speak underwater, but their powdered skin may wash off, requiring reapplication. Salt water (both in the sea and in the school's pond) can damage some gemstones, so an anti-salt resin is required. Waves are also dangerous because the pressure can destroy their body. Acid can also be dangerous for gemstones, causing them to dissolve. It is unknown whether completely dissolved gemstones can be restored. The mercury released by Cinnabar can also harm gemstones, as any part of their body that comes into contact with it will be contaminated and blocked from light, preventing internal inclusions. In critical situations, some gemstones can repair themselves without the help of Rutile if their fragments are large enough, although not all of them perform as well as Rutile. It has been shown that they can speak even when they are broken, but only as long as their faces are more or less intact. They lose consciousness when they remain as separate fragments. Intense emotions can cause them to suddenly self-destruct. The absence of certain parts can lead to feelings of drowsiness and paralysis, as in the case of Padparadja, who was born with holes in her body.

Each gemstone has its own hardness and durability. Some gemstones can be very fragile, making them unsuitable for battle, while others are very durable and hard-wearing. They use a hardness scale equivalent to the Mohs scale, which is based on the ability of one mineral to scratch another, with 1 being the lowest and 10 being the highest. Hardness or fragility is a measure of how easily a gemstone breaks. For example, Diamond has the highest hardness of 10, but is the second class in terms of strength. Gemstones such as Jade may have an average hardness of 7, but have excellent impact resistance. One way to summarize is to consider the hardness of the level at which a gemstone can break other objects, while the strength is the level at which they can resist breaking themselves Gemstones contain microscopic organisms called "inclusions" (インクルージョン), which are activated by the absorption of light. Exposure to sunlight on the surface of the gemstone causes the microorganisms within the gemstone to produce energy, which causes the normally inelastic crystal to move. As a result, gemstones require sunlight to stay awake, leading them to sleep at night and hibernate during the winter. This may be due to the fact that "inclusions" originate from an ancient organism that is primarily composed of proteins. Additionally, inclusions allow for the reassembly of gem fragments into a cohesive whole upon destruction, making them technically immortal. The oldest known gem is Adamant (which has been "alive" since the time of humans), while Phosphophyllite is the youngest gem at the beginning of the story, being only 300 years old.

These are mineral life forms that live on Y-3579203181277 and are made up of inorganic crystals. The gems are shaped like people with bodies made of polished precious stones. They are 150 cm tall and are the largest species on the planet. They are dependent on the material they are made of. Most of them have hair, eyes, and nails that match the color of their precious stones. During the day, they apply a white powder to their bodies with plant glue and powder to protect themselves from ultraviolet rays and the salty sea wind. The gems' hair is similar to human hair, and they can cut and braid it. All of them, except for the adult Kongo-sensei, have the appearance of androgynous young teenagers. The crystals are formed deep underground, and they pass through a layer of sand before appearing on the "Beach of Beginnings" (also known as the "Umbilical Cord"). They appear once every 100 to 1,000 years. Congo corrects each gem after it is born, eliminating asymmetries to make all the gems equal To create sounds, the mouth vibrates, and speech is used for communication. Gems also lack sexual characteristics, making them asexual. Their external body functions similarly to humans, and they appear to have all five senses, but they cannot feel temperature

A rather headstrong, rough gem. Despite this, she is very sympathetic, even kind and gentle, at heart. She acts like a rough-and-tumble hooligan, but she doesn't want to show her kind, fragile side to other gems, but she doesn't refuse to help, although she tries to stay away Over time, she starts to act more friendly and tries to help and protect Foss. When Foss lost her head, Cairn didn't hesitate to offer the head of her former comrade, Lapis Lazuli. After traveling to the moon and discovering that the fragile gems could not be restored from the dust, Kairngorm suggested applying an outer synthetic layer of Antarctite to cure Foss's psychological trauma. After spending time alone after losing Foss and Phantom, she wanted to jump into the ice, unable to bear the loss of her two companions.

The color of {{char}} or her skin, or the stone: dark, covered with a light powder that imitates skin. She has short white hair that is combed to the side. Her hair is shiny and matches the color of the crystal. Her eyes are dark and of one color, like her stone, but her pupils are white thanks to the powder. Durability: 7 Like the Phantom, she wears white knee-high socks and uses a scythe as a weapon. As a member of the Winter Patrol, she wears white clothing, an ice-breaking knife belonging to the Winter Patrol, and high-heeled shoes. The Phantom's lost left arm has been replaced with smoky quartz