The Mystery of Yasakani no Magatama: Japan’s Sacred Jewel
Japan is a country where myth and history are inextricably woven together, nowhere more so than in the story of the Imperial House. While tourists flock to Kyoto’s temples and Tokyo’s neon streets, a profound mystery lies hidden deep within the Imperial Palace in Tokyo. It is the Yasakani no Magatama, the Sacred Jewel, and one of the Three Sacred Treasures of Japan (Sanshu no Jingi).
Unlike the Crown Jewels of the United Kingdom, which are displayed publicly, Japan’s regalia are never seen by the public—and barely ever by the Emperor himself. Among the three treasures, the Yasakani no Magatama holds a unique position as the only item believed to be the original artifact from antiquity, having survived centuries of war and turmoil.
Origins and Meaning
To understand the Yasakani no Magatama, one must first understand the magatama itself. These distinctively comma-shaped beads appear in the archaeological record of Japan as far back as the Jomon period (14,000–300 BC). Initially made of animal tooth or stone, they eventually evolved into high-quality jadeite, agate, and quartz artifacts.
The shape—a curved bead with a hole at the wide end—is subject to much debate. Some historians believe it represents the shape of a soul (tamashii), while others suggest it mimics the shape of a fetus, symbolizing growth and fertility, or the moon.
In the context of the Three Sacred Treasures, the Mirror (Yata no Kagami) represents wisdom, the Sword (Kusanagi no Tsurugi) represents valor, and the Jewel (Yasakani no Magatama) represents benevolence. It signifies the Emperor’s duty to rule with kindness and compassion.
The Legend of the Rock Cave
The story of the jewel is chronicled in Japan’s oldest historical records, the Kojiki (Records of Ancient Matters) and the Nihon Shoki (The Chronicles of Japan).
According to Shinto mythology, the Sun Goddess Amaterasu—the progenitor of the Imperial family—hid herself in a heavenly rock cave (Amano-Iwato) after being tormented by her brother, Susanoo. The world was plunged into eternal darkness. To lure her out, the other gods threw a boisterous party outside the cave.
A deity named Tama-no-Oya-no-Mikoto crafted a long string of 500 curved jewels, the Yasakani no Magatama, to decorate a sacred Sakaki tree placed outside the cave entrance. Intrigued by the noise and the beauty of the jewels and a mirror hung nearby, Amaterasu peeked out, and light returned to the world.
Later, when Amaterasu sent her grandson, Ninigi-no-Mikoto, to descend to earth and rule Japan, she bestowed upon him these treasures. They have been passed down the imperial line ever since, serving as the essential proof of the Emperor’s legitimacy.
Survival Through History
The history of the physical object is as dramatic as its mythology. During the Genpei War (1180–1185), the Imperial Regalia were taken by the Taira clan. At the decisive Battle of Dan-no-ura, the grandmother of the child-Emperor Antoku jumped into the sea with the boy and the treasures to avoid capture.
The sword was lost to the ocean (and later replaced with a replica), and the mirror was recovered. However, the crate containing the Yasakani no Magatama floated. It was recovered by the Minamoto clan, ensuring the survival of the original jewel. Today, it resides in the Kashiko-dokoro, the central shrine of the Three Palace Sanctuaries within the Tokyo Imperial Palace grounds.
Modern Culture and Anime
For modern enthusiasts of Japanese culture, the term “Yasakani no Magatama” might ring a bell not from history books, but from manga and anime. The concept of the three treasures is deeply embedded in Japanese pop culture.
- One Piece: The character Kizaru uses an attack named “Yasakani no Magatama,” where he fires a barrage of light particles.
- Naruto: The Susanoo technique used by Itachi Uchiha wields a variation of the Yasakani Magatama as a projectile weapon.
- Sailor Moon: The concept of talismans and sacred crystals draws heavy inspiration from the regalia.
- Video Games: From Persona to Final Fantasy, items resembling the magatama often appear as accessories granting magical defense or power.
These references keep the ancient terminology alive for younger generations, transforming sacred Shinto symbols into icons of strength and mystical power.
Traveler’s Tips: Experiencing the Magatama
While you cannot see the actual Yasakani no Magatama, you can still immerse yourself in the culture surrounding it.
1. The Imperial Palace East Gardens (Tokyo)
While the sanctuary holding the jewel is off-limits, the East Gardens are open to the public. Walking these grounds allows you to be physically close to where the treasure is kept. The atmosphere is serene and historically charged.
2. Izumo Taisha Area (Shimane Prefecture)
Shimane is the mythological heartland of Japan. The area is famous for agate processing. You can visit the Izumo Magatama Center to learn how these beads are crafted and even make your own magatama out of stone—a perfect souvenir representing longevity and protection.
3. Tokyo National Museum (Ueno)
The museum houses an extensive archaeological collection. Here, you can view ancient jade magatama excavated from Kofun burial mounds. While not the imperial treasure, these artifacts give you the best visual approximation of what the Yasakani no Magatama likely looks like.
Sources & Further Reading
- The Kojiki (Records of Ancient Matters): Translated by Basil Hall Chamberlain. The primary source for the mythology of Amaterasu and the cave.
- The Nihon Shoki (The Chronicles of Japan): Translated by W.G. Aston. Provides the historical timeline of the Imperial succession.
- The Tale of the Heike: A medieval epic recounting the Genpei War and the near-loss of the treasures at Dan-no-ura.