Width: 5.1 - 6.0mm

Sold out

ブラジル産非加熱インペリアルトパーズ（シェリーカラー） 1.042ctルース鑑別書

[Listing 12564053] Brazilian Imperial Topaz 1.042ct Loose Stone

Sold out

[#202607 Akihabara Pop-up Store - Currently Removed] [12559462 Listed] Nigerian Mandarin Garnet 1.347ct Loose Gemstone

Sold out

【ダンデライオンカット】タンザニア産ブルースピネル 6.0mm/0.953ctルース鑑別書鑑定士が運営しています。

[Dandelion Cut] Tanzanian Blue Spinel 6.0mm/0.953ct Loose Stone with Certificate

Sold out

[Listed in 12563739] Green Tourmaline Loose Stone from Brazil 0.906ct

Sold out

ダイヤモンド（H&C） 0.504ctルース(F, VS-1, 3Excellent H&C)

Diamond (H&C) 0.504ct Loose (F, VS-1, 3Excellent H&C)

Sold out

Brazilian Dendritic Apatite 1.063ct Loose Gemstone with Japan-Germany certification

Sold out

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 1.087ctルース

Madagascar Bekily Blue Garnet (Color Change Garnet) 6.0mm/1.087ct Loose Stone

Sold out

オレンジダイヤモンド 0.176ctルース(FANCY DEEP YELLOWISH ORANGE, I-1)

Orange Diamond 0.176ct Loose Stone (FANCY DEEP YELLOWISH ORANGE, I-1)

coming soon

[Lottery Sale 0829] Colombian Non-Oil Emerald 0.600ct Loose Stone Sale price¥348,000

Sold out

South African Sugilite 0.806ct Loose

Sold out

1.170ct Loose Australian Rainbow Lattice Sunstone

Sold out

Zambian Emerald 1.267ct Loose Stone with Certificate

Sold out

Zambian Emerald 1.112 ct Loose Gemstone with Certificate

Sold out

Australian black opal, 0.894 ct loose

Sold out

Australian black opal 0.766ct loose stone

Sold out

[Lottery Sale_0612_08] Unheated Purple Sapphire 0.775ct Loose Gemstone - Houseki Kyo

coming soon

[Lottery Sale 0531_09] Nigerian Mint Green Tourmaline 1.319ct Loose Stone with Certificate Sale price¥55,800

Sold out

Brazilian Dumortierite in Quartz 1.082ct Loose Stone

Sold out

Brazilian Dumortierite in Quartz 1.040 ct Loose Gemstone

Sold out

Tanzanian Windsor Sapphire (Brown Sapphire) 1.137ct Loose Stone with Gemstone Identification Report

Sold out

Synthetic Moissanite 5.8mm/0.682ct Loose Stone

Sold out

Tanzanite 0.760ct loose stone (sugarloaf cut)

Sold out

US-produced Sealite 1.943ct loose stone with certificate of authenticity

Sold out

2.863ct Loose Nepali Kyanite (Royal Blue Color)

Sold out

Madagascar Bi-color Sapphire 5.4mm/0.765ct Loose Stone

Sold out

Madagascar Bicolor Sapphire 5.3mm/0.741ct Loose Stone

Sold out

Loose Madagascar bi-color sapphire 5.1mm/0.607ct

Sold out

Bicolor Sapphire 1.040 ct Loose Gemstone GIT

Sold out

Unheated Teal Green Sapphire 2.140ct Loose Stone GIT

Sold out

Cambodian Blue Zircon (Ratanakiri Blue) 1.455ct Loose Gemstone with Certificate

Sold out

Cambodian Blue Zircon (Ratanakiri Blue) 1.782ct Loose Gemstone with Certificate

Sold out

Brazilian Imperial Topaz, 1.237ct, Loose, with appraisal

Sold out

Malawi Moonstone 2.086 ct Loose

Sold out

Sri Lankan Zircon Cat's Eye 2.087ct Loose Stone with Certificate

Sold out

Pink spinel 0.713ct loose stone

Sold out

ブラウンダイヤモンド 0.600ctルース(FANCY LIGHT BROWN, SI-2)

Brown Diamond 5.3mm/0.600ct Loose Stone (FANCY LIGHT BROWN, SI-2)

Sold out

Madagascar Bi-color Sphene 4.494ct Loose Stone

Sold out

Ethiopian Opal 5.7mm/0.878ct Loose (Sphere)

Sold out

Mozambique Elbaite Tourmaline 1.793ct Loose Stone

Sold out

【12562862掲載】コロンビア産トラピッチェエメラルド 0.448ctルース

Colombian Trapiche Emerald, 0.446 ct, Loose Stone, with Certificate

Sold out

Pink tourmaline 0.795ct loose

Sold out

Pink Star Sapphire from Sri Lanka, 1.682 ct Loose

Sold out

Synthetic Alexandrite 1.355ct Loose Stone

Sold out

Synthetic Alexandrite 1.355ct Loose Stone

Sold out

Synthetic Alexandrite 5.1mm/0.663ct Loose Stone

Sold out

Synthetic Alexandrite 1.320 ct Loose Stone

Sold out

Australian black opal 0.522ct 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.

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.