Oval Cut

Tanzanian Zircon 1.237 ct Loose Stone [Listing 12563381] Sale price¥15,800

[On Sale 7/18 at 10 PM] US Oregon Sunstone 1.032ct Loose Stone Sale price¥25,800

Rainbow Lattice Sunstone from Australia 0.352ct Loose Stone [On sale July 18, 10 PM JST] Sale price¥8,800

[Sale on 7/19 at 10 PM] Brazilian Yellow Beryl 1.472 ct Loose Stone Sale price¥19,800

[On sale July 19th at 10 PM] Tanzanian Kornerupine 0.196ct Loose Stone Sale price¥15,800

[On sale July 19 at 10 PM] Sri Lankan Uva Moonstone 0.974ct Loose Gemstone Sale price¥12,800

[Available 10 PM, July 22nd] Namibian Jeremejevite 0.140ct Loose Gemstone with Certificate Sale price¥33,800

[On Sale 10 PM, July 11] Brazilian Amphibole in Danburite, 1.361ct Loose Sale price¥14,800

[On sale July 11th at 10 PM] Brazilian Amphibole-in-Danburite 2.251ct Loose Stone with Japanese and German Identification Sale price¥29,800

[On sale July 18th at 10 PM] Brown Diamond 0.778ct Loose (FANCY BROWN, SI1) Sale price¥59,800

[Sales begin 10 PM JST, July 12] Malawi Moonstone 1.651 ct Loose Stone Sale price¥8,800

[On sale 7/14 at 10 PM JST] Malawi Moonstone 1.948ct Loose Gemstone Sale price¥8,800

[Sales start: 10 PM, July 14th] Malawi Moonstone (Malawi Moonstone) 3.158ct Loose Gemstone Sale price¥18,800

【On sale 7/16 10PM】Moonstone from Malawi (Malawi Moonstone) 2.102ct Loose Stone Sale price¥14,800

[Sales start 10 PM July 16] Malawi Moonstone (Malawi Moonstone) 1.747ct Loose Sale price¥8,800

[Listing No. 12563397] Brazilian Alexandrite 0.217 ct Loose Stone Sale price¥39,800

[Listed 12563403] Petzottaite from Madagascar 0.200ct Loose Sale price¥29,800

[12563374 Posted] Bicolor Euclase from Zimbabwe, 0.055ct Loose Stone Sale price¥14,800

[Listing 12563380] Unset 1.077ct Tanzanian Zircon Sale price¥12,800

[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT Sale price¥158,000

[On sale July 3 at 10 PM] Jeremejevite from Namibia, 0.218ct loose stone, with a certificate of authenticity Sale price¥49,800

[On sale July 4, 10 PM] 0.416 ct Loose Mozambique Ruby with Certificate Sale price¥29,800

[On sale July 6th at 10 PM] Sri Lankan Yellow Sapphire 0.815ct Loose Stone with Certification Sale price¥15,800

[On sale July 5th at 10 PM] Tanzanian Windsor Sapphire (Brown Sapphire) 1.137ct Loose Stone with Certificate Sale price¥49,800

[On sale July 9th, 10 PM JST] Tanzanian Windsor Sapphire (Purple Sapphire) 0.393ct Loose Stone with Certificate Sale price¥18,800

[On sale July 5th at 10 PM] Colombian Emerald 0.147ct Loose Stone with Appraisal Sale price¥12,800

[On sale July 22nd at 10 PM] Malawi Moonstone 2.001ct Loose Gemstone Sale price¥12,800

Synthetic Alexandrite 0.287ct loose stone Sale price¥8,800

Montana Agate 9.528ct Loose Sale price¥8,800

Brazilian Paraiba Tourmaline 0.360ct Loose GIA Sale price¥298,000

【On sale June 26th, 10 PM JST】Indian Parrot Chrysoberyl 0.518ct Loose Gemstone Sale price¥29,800

Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone Sale price¥6,980

[On sale 7/4 10 PM] Madagascar Padparadscha Sapphire 0.221ct Loose Stone with Central Gem Lab certificate Sale price¥38,800

[On sale June 28 at 10 PM JST] 1.134ct Loose Sri Lankan Ice Blue Sapphire with Gemstone Certificate Sale price¥45,800

【Sale starts July 6th at 10 PM JST】Madagascar Pezzottaite 0.323ct Loose Stone Sale price¥49,800

[Sale on July 6th at 10 PM] Brazilian Silky Alexandrite Loose Stone 0.265ct with Certificate Sale price¥45,800

[On sale July 1st, 10 PM JST] Brazilian Dioptase 0.956ct Loose Stone with Certificate Sale price¥23,800

[On Sale 7/22, 10 PM JST] Orange Zircon from Tanzania 1.305ct Loose Stone with Certification Sale price¥13,800

[On sale July 10th at 10 PM] Zimbabwe Eucrase 0.138ct Loose Gemstone with Certificate Sale price¥29,800

Zimbabwean Blue Apatite (UV Type) 0.650ct Loose Sale price¥9,800

Sri Lankan cobalt spinel 0.281ct loose stone Sale price¥55,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

[Sale on June 25th at 10 PM] Zimbabwe Euclase 0.067ct Loose Stone with Certification Sale price¥15,800

[Sale on 6/25 at 10 PM] US Scheelite 2.666ct Loose Gemstone with Certificate Sale price¥15,800

[Sales start June 25th at 10 PM JST] American Scheelite 1.943ct Loose Stone with Certificate Sale price¥12,800

[On sale June 22nd at 10 PM JST] Madagascar Canary Yellow Chrysoberyl 0.650ct Loose Stone with Appraisal Sale price¥18,800

[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 0.569ct Loose Gemstone with Certificate Sale price¥9,800

[On sale June 21, 10 PM] Jeremejevite 0.089ct Loose Stone from Namibia with certificate Sale price¥25,800

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.