Emerald Hunter Masahiro Shimizu Collection

Mr. Masahiro Shimizu, an emerald hunter, became a hot topic after appearing on TBS TV's ``Matsuko's Unknown World.'' These are rough and loose Colombian emeralds purchased directly from Mr. Shimizu. Colombian emeralds have a unique beauty and depth, with their colors and characteristics changing depending on the mine. Please enjoy Mr. Shimizu's captivating charm that continues to tickle your curiosity.

Karatz GemMagazine
" Interview with Emerald Hunter Masahiro Shimizu "

Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone Sale price¥22,800

Colombian trapiche emerald (reverse trapiche) 0.101ct rough stone Sale price¥14,800

Colombian trapiche emerald (reverse trapiche) 0.252ct rough stone Sale price¥27,800

Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone Sale price¥18,800

Colombian trapiche emerald (reverse trapiche) 0.147ct rough stone Sale price¥18,800

Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone Sale price¥15,800

Colombian mica in emerald 1.940ct loose Sale price¥49,800

Colombian mica in emerald 1.314ct loose Sale price¥39,800

Colombian pyrite emerald 2.380ct rough stone Sale price¥39,800

Colombian emerald 0.350ct rough stone Sale price¥12,800

《Yurakucho Marui 2024112 takeout》Colombian emerald 2.680ct rough stone Sale price¥19,800

Colombian emerald 0.922ct rough stone Sale price¥9,800

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Colombian pyrite-mica emerald 0.517ct loose stone

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Colombian Mica in Emerald 3.9mm/0.278ct Loose Stone

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Colombian Mica in Emerald 4.9mm/0.454ct Loose Stone

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Colombian emerald 0.433ct rough stone

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Colombian emerald 0.130ct rough stone

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Colombian emerald 0.127ct rough stone

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Colombian emerald 0.144ct rough stone

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Colombian emerald rough stone 0.139ct

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Colombian emerald 0.164ct rough stone

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Colombian emerald 0.197ct rough stone

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Colombian emerald 1.349ct loose stone

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Brazilian Paraiba Tourmaline 1.194ct rough stone (Batalha)

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Colombian trapiche emerald (reverse trapiche) 0.105ct loose

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Colombian trapiche emerald (reverse trapiche) 0.057ct loose

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Colombian trapiche emerald (reverse trapiche) 0.098ct loose

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Colombian trapiche emerald (reverse trapiche) 0.150ct rough stone

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Colombian Pyrite Mica Emerald 4mm/0.275ct Loose Stone

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Colombian pyrite/mica in emerald 1.123ct loose

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Colombian trapiche emerald (reverse trapiche) 0.124ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.122ct rough stone

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Colombian mica in emerald 1.330ct loose

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Colombian emerald 0.580ct rough stone (Boteja)

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Colombian trapiche emerald (reverse trapiche) 0.221ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.158ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.192ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.195ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.188ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.109ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.088ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.099ct rough stone

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Colombian trapiche emerald (reverse trapiche) 0.216ct rough stone

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Colombian pyrite in emerald 3.795ct loose

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Colombian emerald 1.70ct rough stone

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Colombian pyrite/mica in emerald 5.001ct loose

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Colombian mica in emerald 0.627ct loose

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Colombian oil-free emerald 0.178ct loose Japanese-German edition

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments