Product list

[Sale on July 19 at 10 PM] Sri Lankan Uva Moonstone 7.7mm/1.763ct Loose Gemstone Sale price¥19,800

[On sale July 19 at 10 PM JST] Tanzanian Bicolor Zoisite 0.255ct Loose Stone Sale price¥8,800

[On sale July 19 at 10 PM JST] Tanzanian Zoisite 4.9mm/0.472ct Loose Stone Sale price¥15,800

Pt950/K18 パライバトルマリン 0.11ct（CuO:2.7%,MnO:3.4%）・ダイヤモンド1.12ctリング　宝貴協

[On sale August 2 at 10 PM] [ColorFuli] Pt950/K18 Paraiba Tourmaline 0.11ct (CuO:2.7%, MnO:3.4%) and Diamond 1.12ct Ring - Houki-kyo Sale price¥188,000

[Sales start July 20th, 10 PM JST] [Colorflee] K18 Diamond 0.15ct Pendant Top (Necklace Top) Sale price¥29,800

[On Sale August 2nd at 10 PM] Jeremejevite from Namibia, 0.199 ct Loose Stone with Certificate Sale price¥45,800

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

[On sale July 22nd, 10 PM JST] Colombian Bicolor Emerald 0.824ct Loose Gemstone Sale price¥25,800

[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

[On sale August 2 at 10 PM JST] Tanzanian Ayana spinel (hot pink spinel) 0.182 ct loose stone with gemological report Sale price¥25,800

タンザニア産アヤナスピネル（ホットピンクスピネル）3.0mm/ 0.107ctルース

[Sale on 7/22 at 10 PM] Tanzanian Ayana Spinel (Hot Pink Spinel) 3.0mm/ 0.107ct Loose Stone Sale price¥18,800

[12558084 posted] Benitoite 0.190ct Loose, with identification report, Made in America Benitoite 0.158ct Loose, with identification report Benitoite 0.190ct Loose, with identification report Sale price¥118,000

カメレオンダイヤモンド 4.0mm/0.255ctルース(LIGHT GRAYISH GREEN YELLOW, VS2)

[For xxx only] Chameleon Diamond 0.255ct Loose (LIGHT GRAYISH GREEN YELLOW, VS2) (Listed under 32501581) Sale price¥59,800

[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

ピンクダイヤモンド 0.075ctルース(FANCY PURPLE PINK, SI1)

[On sale 7/18 at 10 PM] Pink Diamond 0.075ct Loose Stone (FANCY PURPLE PINK, SI1) Sale price¥79,800

ブラウンダイヤモンド 0.728ctルース(FANCY DARK BROWN, SI2)

[On sale July 18th at 10 PM] Brown Diamond 0.728ct Loose Stone (FANCY DARK BROWN, SI2) Sale price¥49,800

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

ブラウンダイヤモンド 5.0mm/0.556ctルース(FANCY LIGHT BROWN, VS-1)

[Sales from 10 PM on July 18] Brown Diamond 5.0mm/0.556ct Loose (FANCY LIGHT BROWN, VS-1) Sale price¥39,800

ダイヤモンド 3.7mm/0.185ctルース(D, VVS-2, 3Excellent H&C)

[On sale July 22] Diamond 3.7mm/0.185ct Loose (D, VVS-2, 3Excellent H&C) Sale price¥39,800

[On sale July 31, 10 PM] [Colorfuri] K18PG Shell Opal, Diamond, and Malachite Pendant Top (Necklace Top) with certificate Sale price¥29,800

[On sale July 15 at 10 PM] Madagascar Grandidierite 0.171ct Loose Gemstone with Certificate Sale price¥29,800

[Sale on 7/15 at 10 PM] Brazilian Green Tourmaline 0.770ct Loose Stone with Certification Sale price¥25,800

[Sales start July 15th at 10 PM] Myanmar Red Spinel 0.229ct Loose Stone with Gemstone Report Sale price¥45,800

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

[On sale July 12th at 10 PM] Malawi Moonstone 2.184ct Loose Sale price¥13,800

【On sale July 12th at 10 PM】Malawian Moonstone (Malawi Moonstone) 1.980ct Loose Sale price¥11,000

【Sale starts at 10 PM on July 14th】Malawi Moonstone (Malawi Moonstone) 2.598ct Loose Stone Sale price¥16,800

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

[On sale July 14th at 10 PM] Malawi Moonstone 2.199ct Loose Sale price¥12,800

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

【Sale on 7/15 at 10 PM】Malawi Moonstone 2.155ct Loose Sale price¥12,800

【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

[On sale July 12th, 10 PM JST] Colombian Emerald, 0.191 ct loose stone, Hoki Kyokai Sale price¥45,800

[Available July 11, 10 PM JST] Kenya Bi-Color Grossular Garnet 0.809 ct 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

[On sale 7/12 at 10 PM] US Oregon Sunstone 7.1mm/1.397ct Loose Stone Sale price¥39,800

[On sale July 11th at 10 PM JST] USA Oregon Sunstone 10.8mm/4.864ct Loose Gemstone Sale price¥98,000

[On sale July 11th at 10 PM] Brazilian Pyrite in Quartz, 5.600 ct. Loose stone Sale price¥9,800

[On sale July 13, 10 PM] Australian Rainbow Lattice Sunstone 2.073ct Loose Gemstone Sale price¥15,800

[On sale July 12th at 10 PM] Bulgarian Sphalerite 7.0mm/1.790ct Loose Stone Sale price¥59,800

[On sale July 16th, 10 PM JST] American Oregon Sunstone 7.0mm/1.224ct Loose Stone Sale price¥28,800

[On sale July 10th at 10 PM] US Oregon Sunstone 8.1mm/1.840ct Loose Sale price¥39,800

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 2.902ctルース

[Sale on July 10th at 10 PM] Australian Rainbow Lattice Sunstone 2.902ct Loose Sale price¥29,800

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.