Cabochon Cut

coming soon

[Listed on 12563931] Australian Opal 0.674ct Loose Gemstone Sale price¥8,800

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

[On sale August 1 at 10 PM] Australian black opal 0.702 ct loose stone with certificate 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

[Sales begin 8/3 at 10 PM JST] Australian Black Opal 0.957ct Loose Stone with Appraisal 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） 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

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） 4.823ctルース

Pink Fire Quartz (Tinkerbell Quartz) from Brazil, 11mm/4.823ct loose stone Sale price¥25,800

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

[On sale July 24 at 10 PM] Kochi Prefecture produced "blood red" coral loose stone, 7.815ct Sale price¥42,800

[Sale on 7/15 at 10 PM] Kochi Prefecture Red Coral 1.593ct Loose Stone Sale price¥9,800

[On sale 7/22 10 PM JST] 1.585ct Blood Red Coral Loose Stone from Kochi Prefecture Sale price¥9,800

[On Sale July 22nd at 10 PM] Kochi Prefecture Blood 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

Australian Black Opal 1.080ct Loose Sale price¥39,800

0.755 ct Loose Australian Black Opal Sale price¥12,800

0.520ct Loose Australian Black Opal Sale price¥13,800

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.