Birthstone list

K18 Peridot and Diamond 0.03ct Ring Sale price¥45,800

K18 Peridot and Diamond 0.03ct Ring Sale price¥45,800

K18WGクリノヒューマイト1.79ct ・ダイヤモンドペンダントトップ（ネックレストップ）

[ColorFleuri] K18WG Clinohumite 1.79ct and Diamond 0.12ct Pendant Top (Necklace Top) with Japanese and German Gemstone Report Sale price¥98,000

Diamond 0.185ct Loose Stone (I, SI1, Ashoka Cut) Sale price¥56,800

Ceylon Blue Sapphire (Ice Blue) 0.289ct Loose Sale price¥9,800

【22602549掲載】【カラフリ】K18WG 血赤珊瑚 0.19ct ブローチ

[Colorful] K18WG Blood Coral and Diamond (0.19ct) Brooch with certificate Sale price¥398,000

【22602548掲載】【カラフリ】Pt900 ブラックオパール 0.83ct リング

[Colorful] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate Sale price¥228,000

【22602547掲載】【カラフリ】Pt900 ブラックオパール 1.24ct リング

[Colorful] Pt900 Black Opal 1.24ct / Diamond 0.70ct Ring with Appraisal Certificate Sale price¥228,000

【22602546掲載】【カラフリ】K18WG ツァボライト 0.57ctct リング

[Calafri] K18WG Tsavorite 0.57ct Ring with Certificate Sale price¥89,800

《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》 Sale price¥7,980

《New Arrivals from Tucson・Limited to 9 Stones》Canary Yellow Tourmaline from Zambia, average 0.18ct《Multi-purchase discount available》 Sale price¥3,980

【カラフリ】Pt900/Pt850クリノヒューマイト0.726ct ペンダント（ネックレス） - カラッツSTORE

[Color Fleuri] Pt900 Chondrodite 0.726ct / Diamond 0.55ct Pendant (Necklace) with Japan-Germany Gemological Report Sale price¥110,000

Sri Lankan Unheated Star Sapphire 0.238ct Loose Sale price¥3,980

0.354ct Unheated Star Sapphire Loose Stone from Sri Lanka Sale price¥6,980

Unheated Sri Lankan Star Sapphire 0.361ct Loose Sale price¥6,980

Loose 0.485 ct Sri Lankan Blue Sapphire Sale price¥9,800

0.329ct Loose Blue Sapphire from Sri Lanka Sale price¥15,800

0.133ct Loose Blue Sapphire from Madagascar Sale price¥18,800

0.455ct Loose Madagascar Blue Sapphire Sale price¥25,800

Brazilian Aventurine Aquamarine 4.2mm/0.239ct Loose Stone Sale price¥8,800

Tanzanian Rhodolite Garnet 0.609ct Loose Gemstone Sale price¥8,800

[On sale May 5th at 10 PM JST] Madagascar Blue Sapphire 0.413ct Loose Gemstone Sale price¥15,800

【12555695掲載】ブラジル産パライバトルマリンインクォーツ 0.313ctルース

Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose Sale price¥15,800

Parasitic Peridot 0.220ct Loose Stone with Certificate Sale price¥79,800

0.442ct Loose Blue Sapphire from Sri Lanka Sale price¥22,800

0.345ct Loose Blue Sapphire from Sri Lanka Sale price¥12,800

Peruvian Bicolor Blue Opal 4.379 ct Loose Gemstone Sale price¥6,980

【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone Sale price¥39,800

[Sakura Shape] Synthetic Sapphire 3.285ct Loose Stone Sale price¥39,800

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS Sale price¥258,000

ピンクダイヤモンド 0.034ctルース(FANCY PURPLE PINK, I-1)

Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1) Sale price¥34,800

Pt950 Ice Blue Diamond Ring Sale price¥158,000

Star Sapphire from Sri Lanka, 4.758 ct Loose Stone (Color Shift) Sale price¥158,000

ブラジル産パライバトルマリン 0.101ctルース（CuO:0.9%,MnO:0.1%）

Paraiba Tourmaline from Brazil 0.101ct Loose Stone (CuO: 0.9%, MnO: 0.1%) Sale price¥39,800

3.020 ct Pakistani emerald in quartz loose gemstone Sale price¥18,800

Gray Diamond 0.107ct Loose (FANCY GRAY, I-1) Sale price¥39,800

Diamond 0.402ct Loose (H, VS2, Flanders Cut) Sale price¥79,800

Pt950 Ice Blue Diamond (Treatment) 0.197ct Ring Sale price¥128,000

Pt950 Tanzania Lavender Tanzanite 1.51ct Ring Sale price¥98,000

K18YG ロシア産デマントイドガーネット（ホーステール認む） 0.271ct リング

K18YG Russian Demantoid Garnet (Horsetail Inclusions Present) 0.271ct Green Garnet Ring Sale price¥228,000

K18YG Indian Moonstone Cat's Eye 1.438ct Ring Sale price¥79,800

Loose White Diamond 0.108ct (FANCY WHITE, I-1) Sale price¥55,800

ピンクダイヤモンド（トリートメント） 0.095ctルース(FANCY PURPLISH PURPLISH PINK, SI1)

Pink Diamond (Treated) 0.095ct Loose (FANCY VIVID PURPLISH PINK, SI1) Sale price¥26,800

ピンクダイヤモンド 0.074ctルース(FANCY LIGHT PURPLE PINK, I-1)

Pink Diamond 0.074ct Loose (FANCY LIGHT PURPLE PINK, I-1) Sale price¥39,800

K18YG Tanzanian Tanzanite 0.344ct Pendant Top Sale price¥39,800

Unheated Brazilian Bi-Color Paraiba Tourmaline 0.105ct Loose Stone GIA (CuO:2.2% MnO:1.2%) Sale price¥198,000

0.079ct Loose Brazilian Paraiba Tourmaline (CuO: 1.6% MnO: 2.8%) Sale price¥29,800

Paraiba Tourmaline Loose Stone from Brazil 0.068ct (CuO: 1.1% MnO: 0.1%) Sale price¥45,800

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.