Login

Sa line

Sort by
Sold out Limited to 11 stones! Includes Koshu Precious Stone Kiriko plusthree "Irodori," normally priced at 74,800 yen. Sphene Gacha. Multiple purchase discounts available.

Limited to 11 stones! Includes Koshu Precious Stone Kiriko plusthree "Irodori," normally priced at 74,800 yen. Sphene Gacha. Multiple purchase discounts available.
Sold out 《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》

《Limited 7 Stones》Sri Lankan Green Zircon (Special Cut, including Silky Type)《Multi-purchase Discount Available》
Sold out Limited to 7 stones: Sri Lankan star sapphire (1 loose stone) Multiple purchase discounts available

Limited to 7 stones: Sri Lankan star sapphire (1 loose stone) Multiple purchase discounts available
Sold out Limited to 14 stones: One loose Mozambique hot pink sapphire (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]

Limited to 14 stones: One loose Mozambique hot pink sapphire (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]

Sold out Limited to 5 stones: 1 Indian Iolite Sunstone (impregnated) loose stone (average 6.6 carats, cabochon cut) Multiple purchase discounts available

Limited to 5 stones: 1 Indian Iolite Sunstone (impregnated) loose stone (average 6.6 carats, cabochon cut) Multiple purchase discounts available
Sold out Limited to 4 sets: Sri Lankan sapphire (2.5mm, round cut) and Sri Lankan glass body set of 2 stones. Discounts available for multiple purchases.

Limited to 4 sets: Sri Lankan sapphire (2.5mm, round cut) and Sri Lankan glass body set of 2 stones. Discounts available for multiple purchases.
Sold out Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

Sold out クリノゾイサイト 1石 - KARATZ STORE｜カラッツSTORE

clinozoisite 1 stone

Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out マダガスカル産スフェーン 0.935ctルース

[Dandelion Cut] Madagascar Sphene 6.0mm/0.935ct Loose Stone

Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out Limited to 14 stones: 1 Santa Maria aquamarine (March birthstone, average 0.39ct) Multiple purchase discounts available

Limited to 14 stones: 1 Santa Maria aquamarine (March birthstone, average 0.39ct) Multiple purchase discounts available
Sold out 《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》

《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》
Sold out 安部祐一朗氏グッズセット【マグカップ＆コンパクトミラー＆オレゴンサンストーンの宝石】

Yuichiro Abe goods set [General purpose case & notebook & postcard autographed & Oregon sunstone jewelry]

Sold out [On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)

[On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)
Sold out 《Limited to 8 Stones》Myanmar Black Spinel (Blemished) 《Bulk Purchase Discount Available》

《Limited to 8 Stones》Myanmar Black Spinel (Blemished) 《Bulk Purchase Discount Available》
Sold out 《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

Sold out Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]

Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Sold out Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Sold out サファリン 0.320ctルース

Sri Lankan saffron 0.320ct loose stone with certificate of authenticity
Sold out Limited to 6 stones: 1 loose sphene stone from Madagascar (round cut, 4mm) Multiple purchase discounts available

Limited to 6 stones: 1 loose sphene stone from Madagascar (round cut, 4mm) Multiple purchase discounts available
Sold out Limited to 4 stones: 1 loose spinel stone from Sri Lanka. Discounts available for multiple purchases.

Limited to 4 stones: 1 loose spinel stone from Sri Lanka. Discounts available for multiple purchases.
Sold out Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available

Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available
Sold out 安部祐一朗氏グッズセット【キャンバス＆アクルルキーホルダー＆オレゴンサンストーンの宝石】

Yuichiro Abe goods set [canvas & acrylic key chain & Oregon sunstone jewelry]

Sold out 【ダンデライオンカット】シトリン 5.58ctルース（ライトカラー） - カラッツSTORE

[Dandelion cut] Citrine 5.58ct loose (light color)

Sold out 【さくらインカット】オレゴンサンストーン 1.55ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 1.55ct Loose

Sold out マダガスカル産ロイヤルブルーサファイア 0.623ctルース 鑑別書

[Lottery Sale 0818_06] Madagascar Royal Blue Sapphire 0.623ct Loose Stone with Certificate
Sold out ブルーサファイア 0.148ctルース

【8/30 22時販売】ブルーサファイア 0.148ctルース
Sold out インド産アイオライトサンストーン 1.057ctルース

【9/1 22時販売】インド産アイオライトサンストーン 1.057ctルース
Sold out タンザニア産ピンクゾイサイト 0.835ctルース

[Lottery Sale 0718_09] Tanzanian Pink Zoisite 0.835ct Loose Stone with Gem Identification Report
Sold out タンザニア産サンストーン（イリュージョンサンストーン） 0.498ctルース

[Sale begins August 24th at 10 PM JST] Tanzanian Sunstone (Illusion Sunstone) 5.5mm/0.498ct Loose Stone
Sold out マダガスカル産バイカラーサファイア 1.665ctルース

Madagascar Bi-Color Sapphire 1.665ct Loose Gemstone
Sold out カンボジア産ブルージルコン（ラタナキリブルー） 0.419ctルース

[On sale August 28th, 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 0.419ct Loose Stone with Appraisal
Sold out タンザニア産ヴァイオレットサファイア 0.523ctルース

[Sales Start: August 27, 10 PM JST] 0.523ct Tanzanian Violet Sapphire Loose Gemstone (Color Change Sapphire) with Certification
Sold out タンザニア産サファイア 0.622ctルース

[Sales start August 27, 10 PM JST] Tanzanian Sapphire 0.622 ct Loose (Color Change Sapphire) with Appraisal Report
Sold out 【12564183掲載】マダガスカル産サファイア 1.480ctルース

【Lottery Sale 0825_06】Madagascar Sapphire 1.480ct Loose GIA

Sold out 【12564163掲載】ブルガリア産グリーンスファレライト 3.608ctルース

[Lottery Sale 0829] Bulgarian Green Sphalerite 3.608ct Loose Gemstone

Sold out マダガスカル産オレンジサファイア 0.671ctルース

【Listed on 12564012】Madagascar Orange Sapphire 0.671ct Loose
Sold out [Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available

[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available
Sold out ブラジル産スペサルティンガーネット 0.923ctルース

[Listed as 12564067] Brazilian Spessartine Garnet 0.923ct Loose Stone
Sold out マダガスカル産ロイヤルブルーサファイア 0.559ctルース

[12564014 listed] Madagascar Royal Blue Sapphire 0.559ct Loose Stone
Sold out 非加熱モンタナサファイア（ヨーゴ産） 0.186ctルース 日独鑑分析報告書付き

[Lottery Sale 0731_07] Unheated Montana Sapphire (Yogo Mine) 0.186ct Loose Stone with Japan-Germany Gemological Analysis Report
Sold out Pt900 マダガスカル産パパラチアサファイア 4.2mm/0.34ct ・ダイヤモンド0.18ctペンダントトップ（ネックレストップ）中宝鑑

Pt900 Madagascar Paparadscha Sapphire 4.2mm/0.34ct ・Diamond 0.18ct Pendant Top, Central Gemological Laboratory of Japan certified

Sold out マダガスカル産パパラチアサファイア 0.690ctルース 中宝鑑

[#202607AkihabaraPopUpTakeOut][12563062Published] Padparadscha Sapphire 0.690ct Loose Stone
Sold out ブラジル産サンタマリアアクアマリン 0.339ctルース

#202607 Akihabara Pop-up Store (currently out of office) #12563139 Listed: Brazilian Santa Maria Aquamarine, 0.339ct Loose Stone
Sold out K18 マダガスカル産パパラチアサファイア 0.278ct・ダイヤモンド0.67ctリング DGL鑑

K18 Madagascar Padparadscha Sapphire 0.278ct / Diamond 0.67ct Ring DGL Certification

Sold out ジンバブエ産スフェーン 0.669ctルース

[On Sale August 13 at 10 PM] 0.669ct Loose Sphene from Zimbabwe with Certificate

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.