__Hardness:__ 7.5

A gem on patrol duty with their partner Goshenite. Morganite is always overconfident, brashly makes decisions, and loves to tease Phos.

~!Morga, along with Goshenite, is taken to the moon a few years after Phos loses their head and is asleep for 102 years.!~

In a world inhabited by crystalline lifeforms called The Lustrous, every unique gem must fight for their way of life against the threat of lunarians who would turn them into decorations. Phosphophyllite, the most fragile and brittle of gems, longs to join the battle. When Phos is instead assigned to complete a natural history of their world, it sounds like a dull and pointless task. But this new job brings Phos into contact with Cinnabar, a gem forced to live in isolation. Can Phos’s seemingly mundane assignment lead both Phos and Cinnabar to the fulfillment they desire?
 
(Source: Kodansha USA)
 
Note: Nominated for the 8th Manga Taisho in 2015.

In the mysterious future, crystalline organisms called Gems inhabit a world that has been destroyed by six meteors. Each Gem is assigned a role in order to fight against the Lunarians, a species who attacks them in order to shatter their bodies and use them as decorations. 
 
Phosphophyllite, also known as Phos, is a young and fragile Gem who dreams of helping their friends in the war effort. Instead, they are told to compile an encyclopedia because of their delicate condition. After begrudgingly embarking on this task, Phos meets Cinnabar, an intelligent gem who has been relegated to patrolling the isolated island at night because of the corrosive poison their body creates. After seeing how unhappy Cinnabar is, Phos decides to find a role that both of the rejected Gems can enjoy. Houseki no Kuni follows Phos' efforts to be useful and protect their fellow Gems.

__Agency:__ I'm Enterprise

__[Profile](http://www.imenterprise.jp/profile.php?id=62) | [Twitter](https://twitter.com/623tmr) | [Anison](http://anison.info/data/person/29431.html) | [Wiki (en)](https://en.wikipedia.org/wiki/Mutsumi_Tamura) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E7%94%B0%E6%9D%91%E7%9D%A6%E5%BF%83)__

**Mutsumi Tamura** is a voice actress affiliated with I'm Enterprise.

She announced her marriage to a man from outside the entertainment industry on April 1st, 2024.

__Non-anime roles:__
- Milk - Goddess of Victory: Nikke (VG)
- Mihara - Goddess of Victory: Nikke (VG)
- Aikawa Ryuo - YanOta: The Delinquent and the Otaku (Drama CD)

She is a daughter of voice actor, ADR director, and writer, [John Swasey](https://anilist.co/staff/95201/John-Swasey) and the sister of voice actor, Joshua Swasey.

__Hometown:__ Dormagen, Germany

[Synchronkartei](https://www.synchronkartei.de/sprecher/9390/2)

The Gems fight against the Lunarians, beings who attack them and use their shattered bodies as decorations. Each Gem is assigned a role, and Phos, the youngest, is assigned to create an encyclopedia of natural history.
 
Note: A promotional video that was released through YouTube in commemoration of the publication of the manga's first volume. 
(Source: HIDIVE)