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Sold out パキスタン産ラズライト（天藍石） 0.055ctルース

Pakistani Lazurite (Azurite) 0.055ct loose stone

Sold out パキスタン産ラズライト（天藍石） 0.087ctルース

Pakistani Lazurite (Azurite) 0.087ct loose stone
Sold out アフガニスタン産ハックマナイト 0.050ctルース

Afghanistan Hackmanite 0.050ct loose stone
Sold out ブラジル産ユークレース 0.088ctルース

Brazilian Euclase 2.6mm/0.088ct Loose Stone

Sold out コンクパール（火焔模様有り） 0.095ctルース

Conch pearl (with flame pattern) 0.095ct loose
Sold out コンクパール（火焔模様有り） 0.098ctルース

Conch pearl (with flame pattern) 0.098ct loose
Sold out ジンバブエ産バイカラーユークレース 0.061ctルース

Bicolor Euclase from Zimbabwe 0.061ct loose
Sold out Blue spinel 0.096ct loose stone

Blue spinel 0.096ct loose stone
Sold out ブラジル産サンタマリアアクアマリン 0.067ctルース

[Mr. KEN] Santa Maria Aquamarine from Brazil 2.4mm/0.067ct loose (princess cut)
Sold out ブラジル産サンタマリアアクアマリン 0.076ctルース

[KEN] Santa Maria Aquamarine from Brazil 2.5mm/0.076ct loose (princess cut)
Sold out ブラジル産サンタマリアアクアマリン 0.076ctルース

[KEN] Santa Maria Aquamarine from Brazil 2.5mm/0.076ct loose (princess cut)
Sold out ブラジル産サンタマリアアクアマリン 0.074ctルース

[KEN] Santa Maria Aquamarine from Brazil 2.5mm/0.074ct loose (princess cut)
Sold out Hot pink spinel 0.086ct loose

Hot pink spinel 0.086ct loose
Sold out Jeremejevite from Namibia 0.025ct loose

Jeremejevite from Namibia 0.025ct loose
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.090ct loose

Bekily Blue Garnet from Madagascar (color change garnet) 0.090ct loose
Sold out イエローダイヤモンド原石（ソーヤブル） 0.097ct原石

Yellow diamond rough stone (sawable) 0.097ct rough stone
Sold out アウイナイト 0.071ctルース

Auinite 2.5mm/0.071ct loose
Sold out Auinite 2.1mm/0.045ct loose

Auinite 2.1mm/0.045ct loose
Sold out パキスタン産ラズライト（天藍石） 0.080ctルース

Pakistani Lazurite (Azurite) 0.080ct Loose Stone

Sold out マデイラシトリン 0.096ctルース

[Mr. Sanjay] Madeira Citrine 0.096ct Loose (Princess Cut)
Sold out ブルーサファイア 0.098ctルース

[Mr. Sanjay] Blue sapphire 0.098ct loose
Sold out ブルーサファイア 0.089ctルース

[Mr. Sanjay] Blue sapphire 2.7mm/0.089ct loose
Sold out ダイヤモンド原石（ソーヤブル） 0.094ct原石

Rough diamond (sawable) 0.094ct rough stone (equivalent to VS-SI class)
Sold out Peridot green diamond (treatment) 0.071ct loose (equivalent to VS class)

Peridot green diamond (treatment) 0.071ct loose (equivalent to VS class)
Sold out Canary Yellow Diamond (Treatment) 0.097ct Loose (SI class equivalent)

Canary Yellow Diamond (Treatment) 0.097ct Loose (SI class equivalent)
Sold out Canary yellow diamond (treatment) 0.084ct loose (equivalent to VS class)

Canary yellow diamond (treatment) 0.084ct loose (equivalent to VS class)
Sold out Diamond (treatment) 0.052ct loose (equivalent to VS class)

Diamond (treatment) 0.052ct loose (equivalent to VS class)
Sold out Mint green diamond (treatment) 0.043ct loose (equivalent to VS class)

Mint green diamond (treatment) 0.043ct loose (equivalent to VS class)
Sold out Light mint green diamond (treatment) 2.6mm/0.074ct loose (VS-SI class equivalent)

Light mint green diamond (treatment) 2.6mm/0.074ct loose (VS-SI class equivalent)
Sold out Ice green diamond 2.8mm/0.090ct loose (equivalent to VS class)

Ice green diamond 2.8mm/0.090ct loose (equivalent to VS class)
Sold out Ice green diamond 2.7mm/0.087ct loose (equivalent to VS class)

Ice green diamond 2.7mm/0.087ct loose (equivalent to VS class)
Sold out アイスブルーダイヤモンド 0.051ctルース

Ice blue diamond 0.051ct loose (equivalent to VS class)
Sold out アイスブルーダイヤモンド 0.064ctルース

Ice blue diamond 0.064ct loose (SI class equivalent)
Sold out コバルトガーナイト 0.067ctルース

[Mr. Sanjay] Cobalt Garnite 0.067ct Loose
Sold out コバルトガーナイト 0.068ctルース

[Mr. Sanjay] Cobalt Garnite 2.1mm/0.068ct Loose
Sold out [Mr. Sanjay] Cobalt Garnite 2.1mm/0.060ct Loose

[Mr. Sanjay] Cobalt Garnite 2.1mm/0.060ct Loose
Sold out Paraiba tourmaline from Brazil 0.023ct loose

Paraiba tourmaline from Brazil 0.023ct loose
Sold out 非加熱ブラジル産パライバトルマリン 0.040ctルース AIGS

Unheated Brazilian Paraiba Tourmaline 0.040ct Loose Stone AIGS
Sold out イエローダイヤモンド（トリートメント） 0.091ルース(FANCY VIVID YELLOW, VVS2)

Yellow Diamond (Treatment) 0.091 Loose (FANCY VIVID YELLOW, VVS2)
Sold out Pink Diamond 2.5mm/0.025 Loose (FANCY PURPLISH PINK, SI2)

Pink Diamond 2.5mm/0.025 Loose (FANCY PURPLISH PINK, SI2)
Sold out Pink diamond 0.042ct loose (FANCY INTENSE PINK, SI2)

Pink diamond 0.042ct loose (FANCY INTENSE PINK, SI2)
Sold out ヴェイリネナイト 0.091ctルース

Veillinite 0.091ct loose
Sold out Veillinite 0.079ct loose

Veillinite 0.079ct loose

Sold out イエローダイヤモンド原石（ソーヤブル） 0.061ct原石

Yellow diamond rough stone (sawable) 0.061ct rough stone
Sold out Jeremejevite from Namibia 0.022ct loose

Jeremejevite from Namibia 0.022ct loose
Sold out Jeremejevite from Namibia 0.025ct loose

Jeremejevite from Namibia 0.025ct loose
Sold out Jeremejevite from Namibia 0.031ct loose

Jeremejevite from Namibia 0.031ct loose
Sold out Namibian Jeremejevite 0.030ct loose stone

Namibian Jeremejevite 0.030ct loose stone

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments