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Limited to 14 stones: 1 loose sphalerite stone from Spain (average 0.55 carats) Multiple purchase discounts available

Limited to 14 stones: 1 loose sphalerite stone from Spain (average 0.55 carats) Multiple purchase discounts available Sale price¥2,980
[On Sale at 10 PM on September 21st] [Only one left] Pink Diamond Loose 💎 Fancy Orangey Pink 0.188ct, or any other Fancy color, single loose pink diamond (all stones sorted or certified) [Multiple purchase discounts available]

[On Sale at 10 PM on September 21st] [Only one left] Pink Diamond Loose 💎 Fancy Orangey Pink 0.188ct, or any other Fancy color, single loose pink diamond (all stones sorted or certified) [Multiple purchase discounts available] Sale price¥22,800
[On sale from 10/4 at 10 PM] [Limited to 17 stones] Tanzanian Bicolor Sapphire Loose Stone [Multiple purchase discounts available]

[On sale from 10/4 at 10 PM] [Limited to 17 stones] Tanzanian Bicolor Sapphire Loose Stone [Multiple purchase discounts available] Sale price¥4,580
[Available at 10 PM on September 20th] Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone [Multiple Purchase Discounts Available]

[Available at 10 PM on September 20th] Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone [Multiple Purchase Discounts Available] Sale price¥5,980
[Available at 10 PM on September 28th] [Limited to 16 stones] Loose tourmaline gacha featuring special cuts including Sakura in cut (from Congo) and Dandelion cut (from Brazil) [Multiple purchase discounts available]

[Available at 10 PM on September 28th] [Limited to 16 stones] Loose tourmaline gacha featuring special cuts including Sakura in cut (from Congo) and Dandelion cut (from Brazil) [Multiple purchase discounts available] Sale price¥4,980
[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases.

[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases. Sale price¥4,980
[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available] Sale price¥6,980
[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]

[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available] Sale price¥3,980
[Available at 10 PM on September 20th] Limited to 20 stones: Russian Demantoid Garnet (Round Cut, 2.0mm) Loose Stone [Multiple Purchase Discounts Available]

[Available at 10 PM on September 20th] Limited to 20 stones: Russian Demantoid Garnet (Round Cut, 2.0mm) Loose Stone [Multiple Purchase Discounts Available] Sale price¥3,980
Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available

Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available Sale price¥3,980
Limited to 25 stones: One loose rhodochrosite stone (4mm cabochon cut) from Sutton Holm, USA. Discounts available for multiple purchases.

Limited to 25 stones: One loose rhodochrosite stone (4mm cabochon cut) from Sutton Holm, USA. Discounts available for multiple purchases. Sale price¥4,580
ミャンマー産ホットピンクスピネル 0.276ctルース

0.276ct loose hot pink spinel from Myanmar Sale price¥19,800
[On sale at 10 PM on September 28th] [Limited to 14 stones] 3mm Unheated Sapphire from Theppanawa Mine, Sri Lanka (Multiple purchase discounts available)

[On sale at 10 PM on September 28th] [Limited to 14 stones] 3mm Unheated Sapphire from Theppanawa Mine, Sri Lanka (Multiple purchase discounts available) Sale price¥5,980
[Available at 10 PM on September 15th] Limited to 11 stones: One loose silky pink sapphire from Vietnam (2.0-2.5mm, heavy inclusions) [Multiple purchase discounts available]

[Available at 10 PM on September 15th] Limited to 11 stones: One loose silky pink sapphire from Vietnam (2.0-2.5mm, heavy inclusions) [Multiple purchase discounts available] Sale price¥3,980
【さくらインカット】メキシコ産オパール 9mm/1.532ctルース - カラッツSTORE

[Sale at 10 PM on September 15th] [Sakura In-Cut] Mexican Opal 9mm/1.532ct Loose Sale price¥45,800
ブルーサファイア 0.591ctルース

[Sold at 10pm on September 15th] Blue sapphire 0.591ct loose stone Sale price¥9,800
パープルスピネル 0.210ctルース

Purple spinel 0.210ct loose Sale price¥3,980
ラベンダースピネル 0.160ctルース

Lavender spinel 0.160ct loose Sale price¥3,980
Pink spinel 0.290ct loose

Pink spinel 0.290ct loose Sale price¥5,980
【KEN氏】オーソクレース 3.711ctルース 日独鑑 - カラッツSTORE

Orthoclase 3.711ct loose stone, Japan-Germany exchange Sale price¥15,800
【KEN氏】スキャポライト 1.780ctルース - カラッツSTORE

Scapolite 1.780ct loose stone Sale price¥9,800
ピンクサファイア 0.934ctルース

Pink sapphire 0.934ct loose Sale price¥15,800
【KEN氏】メキシコ産ファイアオパール 1.580ctルース - カラッツSTORE

Mexican Fire Opal 1.580ct Loose Sale price¥25,800
ヘミモルファイト 29.778ctルース

Hemimorphite 29.778ct loose Sale price¥79,800
ビルマ産バイカラースピネル 0.849ctルース

Burmese bicolor spinel 0.849ct loose Sale price¥35,800
トラピッチェエメラルド 0.650ctルース（逆トラピッチェ）

Trapiche emerald 0.650ct loose (reverse trapiche) Sale price¥6,980
オパール 14.837ctルース

Australian opal 14.837ct loose Sale price¥98,000
バイカラートルマリン 1.097ctルース

Bicolor tourmaline 1.097ct loose Sale price¥5,980
バイカラートルマリン 1.248ctルース

Bicolor tourmaline 1.248ct loose Sale price¥6,980
ブラジル産パライバトルマリン 0.232ctルース

Paraiba tourmaline from Brazil 0.232ct loose Sale price¥45,800
ブラジル産パライバトルマリン 0.204ctルース

Paraiba tourmaline from Brazil 0.204ct loose Sale price¥29,800
ブラジル産パライバトルマリン 0.240ctルース（CuO:0.7%、MnO:3.8%）

Paraiba tourmaline from Brazil 0.240ct loose (CuO:0.7%, MnO:3.8%) Sale price¥45,800
[On sale at 10 PM on September 21st] Limited to 14 stones: Beryllium-heated Sapphire (3.5mm, KEN Cut) - Single Loose Stone [Multiple purchase discounts available]

[On sale at 10 PM on September 21st] Limited to 14 stones: Beryllium-heated Sapphire (3.5mm, KEN Cut) - Single Loose Stone [Multiple purchase discounts available] Sale price¥1,580
ブラジル産ピンクインペリアルトパーズ 1.907ctルース 日独鑑

Brazilian Pink Imperial Topaz 1.907ct Loose Japanese-German Edition Sale price¥98,000
【ダンデライオンカット】スモーキークォーツ 25mm/41.745ct《コラボ》ルース（6枚花びら） ワッペン付

[Dandelion Cut] Smoky Quartz 25mm/41.745ct《Collaboration》Loose (6 petals) with patch Sale price¥98,000
ロシア産デマントイドガーネット（ホーステール認む） 0.214ctルース

Russian demantoid garnet (horsetail recognized) 0.214ct loose Sale price¥49,800
スリランカ産スピネル 0.800ctルース

Spinel from Sri Lanka 0.800ct loose Sale price¥6,980
【KEN氏】タンザニア産クリノゾイサイト 0.710ctルース（ファントムカット） - カラッツSTORE

Tanzanian Clinozoisite 0.710ct Loose Stone (Phantom Cut) Sale price¥3,980
【KEN氏】タンザニア産クリノゾイサイト 0.950ctルース（ファントムカット） - カラッツSTORE

Tanzanian Clinozoisite 0.950ct Loose Stone (Phantom Cut) Sale price¥3,980
【KEN氏】タンザニア産クリノゾイサイト 0.560ctルース（ファントムカット） - カラッツSTORE

Tanzanian Clinozoisite 0.560ct Loose Stone (Phantom Cut) Sale price¥3,980
ブラジル産パライバトルマリン 0.239ctルース

Paraiba tourmaline from Brazil 0.239ct loose Sale price¥45,800
ブラジル産パライバトルマリン 0.226ctルース（CuO:0.7%、MnO:3.6%）

Paraiba tourmaline from Brazil 0.226ct loose (CuO:0.7%, MnO:3.6%) Sale price¥39,800
ブラジル産パライバトルマリン 0.086ctルース（CuO:1.5%、MnO:2.3%）

Paraiba tourmaline from Brazil 0.086ct loose (CuO:1.5%, MnO:2.3%) Sale price¥18,800
【KEN氏】メキシコ産ダンビュライト 1.981ctルース（ファントムカット） - カラッツSTORE

Mexican Danburite 1.981ct loose stone (phantom cut) Sale price¥9,800
【KEN氏】メキシコ産ダンビュライト 1.859ctルース（ファントムカット） - カラッツSTORE

Mexican Danburite 1.859ct loose stone (phantom cut) Sale price¥9,800
ブラジル産パライバトルマリン 0.167ctルース（CuO:1.6%、MnO:3.0%）

Paraiba tourmaline from Brazil 0.167ct loose (CuO:1.6%, MnO:3.0%) Sale price¥29,800
ブラジル産パライバトルマリン 0.205ctルース（CuO:0.8%、MnO:3.1%）

Paraiba tourmaline from Brazil 0.205ct loose (CuO:0.8%, MnO:3.1%) Sale price¥39,800
ターフェアイト 0.241ctルース 日独

Taaffeite 0.241ct loose Japanese and German Sale price¥39,800

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.