Cabochon Cut

[Listed on 12562258] Eudialyte from Canada 2.796 ct loose stone Sale price¥39,800

[Posted on 12563995] Australian Black Opal 0.702 ct Loose Stone Sale price¥29,800

【On sale at 10 PM on July 26】Kochi Prefecture red coral 1.439ct loose gemstone Sale price¥9,800

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 0.978ct Loose Stone Sale price¥9,800

【Sales start 10 PM, July 26 JST】Kochi Prefecture Blood Coral Loose Stone 1.128ct Sale price¥9,800

[On sale July 28th at 10 PM] Kochi Prefecture produced blood coral 1.238ct loose stone Sale price¥9,800

【Sales start: July 28, 10 PM JST】Kochi Prefecture Produced Blood Coral 1.286ct Loose Stone Sale price¥9,800

【For Sale July 28, 10 PM JST】Kochi Prefecture Red Coral Loose Stone 1.379 ct Sale price¥11,800

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 1.321ct Loose Stone Sale price¥9,800

【7/29 10 PM Sale】Colombian Emerald Cat's Eye 0.060ct Loose Stone (Houseki Kyo Appraisal) Sale price¥15,800

[Listed as 12563246] Mexican Fire Opal 1.115ct Loose Sale price¥25,800

[Sales begin July 21st, 10 PM] Kochi Prefecture Harvested Red Coral 1.446ct Loose Stone Sale price¥12,800

[On sale July 21st, 10 PM JST] Kochi Prefecture natural red coral 1.119ct loose stone Sale price¥11,800

[On sale July 18, 10 PM JST] Kochi Prefecture Blood Coral 1.001ct Loose Stone Sale price¥12,800

[Sales begin 10 PM on July 18] Kochi Prefecture blood coral, 1.290 ct loose stone Sale price¥12,800

【Sales Start: July 18, 10 PM JST】Kochi Prefecture Blood Red Coral 1.348ct Loose Stone Sale price¥12,800

[Sale starts 10 PM, July 17th] High-Grade Red Coral (Kochi Prefecture) 1.063ct Loose Stone Sale price¥12,800

[On sale July 16th at 10 PM] Kochi Prefecture produced oxblood coral, 1.087ct loose gemstone Sale price¥12,800

[Sale on July 18th, 10 PM JST] South African Sugilite 0.748ct Loose Stone Sale price¥13,800

[On sale July 22, 10 PM] Australian Black Opal 1.082ct Loose Stone with Certificate Sale price¥69,800

[Sale starts July 20 at 10 PM JST] Australian black opal loose stone, 1.066 ct Sale price¥69,800

[Sales begin 7/20 at 10 PM] Australian black opal, 0.778 ct loose stone Sale price¥35,800

【Listing 12563849】Australian Black Opal 0.957ct Loose Stone Sale price¥49,800

ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 2.858ctルース

[On sale July 11, 10 PM] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 2.858ct Loose Stone Sale price¥25,800

ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.108ctルース

[On sale July 15 at 10 PM] Brazilian Tinkerbelle Quartz (Pink Fire Quartz) 3.108ct Loose Stone Sale price¥29,800

オーストラリア産オーストラリア産レインボーラティスサンストーン 2.208ctルース

[Sale on 7/10 at 10 PM] Australian Rainbow Lattice Sunstone 2.208ct Loose Stone Sale price¥22,800

[On sale July 10th at 10 PM] Brazilian Dumortierite in Quartz 1.684 ct Loose Stone Sale price¥12,800

[On sale July 10 at 10 PM JST] Brazilian Dumortierite in Quartz, 4.152 ct loose stone Sale price¥25,800

[Sales start July 13, 10 PM] Kochi Prefecture red coral 4.485 ct loose stone Sale price¥98,000

[Lottery Sale 0428_2_07] Watermelon Tourmaline 14.780ct Loose Stone Sale price¥128,000

[On sale July 24 at 10 PM JST] Brazilian Dumortierite in Quartz 7.3mm/1.729ct Loose Stone Sale price¥12,800

Kochi Prefecture deep red coral 7.815ct loose gemstone Sale price¥42,800

Kochi Prefecture oxblood coral 1.593ct loose Sale price¥9,800

Kochi Prefecture Blood Coral 1.585ct Loose Gemstone Sale price¥9,800

Kochi Prefecture Aka Sango (Red Coral) 10.209ct Loose Stone Sale price¥29,800

【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥49,800

Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone Sale price¥5,980

Sri Lankan Chrysoberyl Cat's Eye 1.074ct Loose Stone Sale price¥4,980

[On sale June 17th at 10 PM] Indian Parrot Chrysoberyl Cat's Eye 0.792ct Loose Stone Sale price¥29,800

Australian black opal 3.242ct loose stone Sale price¥59,800

[On sale June 14th, 10 PM JST] Madagascar Apatite Cat's Eye 1.734ct Loose Stone, Nissaihou Sale price¥9,800

【Sales begin on 6/21 at 10 PM】Mexican Fire Opal 1.857ct Loose Gemstone Sale price¥25,800

[On sale June 21st, 10 PM] Mexican Fire Opal Loose Stone 2.279ct Sale price¥15,800

[On sale July 24 at 10 PM] Mexican Fire Opal Loose Stone 0.729ct Sale price¥8,800

[Sales begin 10 PM on June 21] Sri Lankan Chrysoberyl Cat's Eye 0.798ct Loose Sale price¥12,800

[On sale June 7th at 10 PM] Colombian Trapiche Emerald, 1.874ct Loose Stone, with Identification Report Sale price¥69,800

[Sale on June 5th at 10 PM] Sri Lankan Zircon Cat's Eye 2.087ct Loose Stone with Appraisal Sale price¥39,800

【Available May 30th at 10 PM】Sugilite from South Africa, 0.786 ct Loose Stone Sale price¥12,800

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.