Less than 0.5ct

American benitoite 0.147ct loose Sale price¥35,800

American benitoite 0.097ct loose Sale price¥24,800

American benitoite 0.101ct loose Sale price¥25,800

American benitoite 0.127ct loose Sale price¥28,800

American benitoite 0.133ct loose Sale price¥29,800

American benitoite 0.102ct loose Sale price¥22,800

American benitoite 0.187ct loose Sale price¥39,800

Russian demantoid garnet cat's eye (horsetail recognized) 0.171ct loose Sale price¥15,800

Russian demantoid garnet cat's eye (horsetail recognized) 0.222ct loose Sale price¥18,800

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.177ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) 0.177ct loose Sale price¥8,800

Mint green sapphire 0.348ct loose Sale price¥9,800

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.167ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 3.6mm/0.167ct loose stone Sale price¥4,980

Mint color tourmaline 0.198ct loose Sale price¥4,980

Mint color tourmaline 0.229ct loose Sale price¥4,980

Pink tourmaline 0.205ct loose Sale price¥4,980

Bicolor sapphire from Madagascar 0.252ct loose Sale price¥9,800

Bicolor sapphire from Madagascar 0.259ct loose Sale price¥4,980

Bicolor sapphire from Madagascar 0.198ct loose Sale price¥7,980

Bicolor sapphire from Madagascar 0.212ct loose Sale price¥7,980

Unheated silky pink sapphire from Vietnam 0.197ct loose Sale price¥8,800

Unheated silky pink sapphire from Vietnam 0.247ct loose Sale price¥8,800

[12/17 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 4.2mm/0.325ct Loose Stone Sale price¥59,800

[12/14 22:00 Sale] Sinhalite from Sri Lanka 0.434ct Loose Stone Sale price¥8,800

[12/14 22:00 Sale] Mexican Water Opal (Faceted) 0.402ct Loose (Contrarus Opal) Sale price¥12,800

[12/14 22:00 Sale] Sinhalite from Sri Lanka 0.456ct Loose Stone Sale price¥9,800

[12/14 22:00 Sale] Tanzanian Chrome Tourmaline 0.164ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on December 7th] Madagascar Andesine Labradorite Moonstone (also known as Rainbow Moonstone) 0.178ct Loose Stone Sale price¥9,800

[12/7 22:00] Brazilian Rubellite 0.332ct Loose Stone Sale price¥12,800

[12/7 22:00] American Peridot 0.385ct Loose Stone Sale price¥8,800

[12/13 22:00 Sale] Sri Lankan Yellow Sapphire 0.343ct Loose Sale price¥12,800

[12/12 22:00 Sale] Synthetic Quartz 0.430ct Loose Stone (Synthetic Green Quartz) Sale price¥6,980

[12/14 22:00] Brazilian Pink Tourmaline 5.0mm/0.484ct Loose Stone (Rose Cut) Sale price¥8,800

[12/14 22:00] Colombian Emerald 3.0mm/0.098ct Loose Stone Sale price¥12,800

Chrome tourmaline 0.300ct loose stone Sale price¥2,980

Yellow diamond rough stone (makeable) 0.247ct rough stone Sale price¥22,800

White topaz 16.06ct loose Sale price¥25,800

Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition Sale price¥55,800

Paraiba tourmaline from Mozambique 0.207ct loose Sale price¥9,800

Diamond 0.052ct loose (trapeze cut, VS class equivalent) Sale price¥6,980

Zircon 0.416ct loose Sale price¥3,980

Colombian emerald cat's eye 0.110ct loose Sale price¥9,800

Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%) Sale price¥69,800

Paraiba tourmaline from Mozambique 0.229ct loose Sale price¥9,800

[12/16 22:00 Sale] Sri Lankan Yellow Sapphire 0.170ct Loose Sale price¥12,800

[12/16 22:00 Sale] Sri Lankan Yellow Sapphire 0.182ct Loose Sale price¥9,800

[12/14 22:00] Indian Moonstone 5.1mm/0.426ct Loose Stone (Rose Cut) Sale price¥6,980

Australian opal 0.286ct loose Sale price¥5,980

Dioptase from Namibia 0.229ct loose Japanese-German book Sale price¥69,800

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.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.