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colored stone loose

A list of colored stones and loose gemstones.

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Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 4.5mm/0.369ct Loose Stone

Madagascar Bekiri Blue Garnet (Color Change Garnet) 4.5mm/0.369ct Loose Stone
Sold out Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)

Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles)
Sold out ブラジル産アクアマリン 0.874ctルース

Brazilian Aquamarine 0.874ct Loose Stone (Phantom Cut)
Sold out Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases.

Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases.
Sold out Limited to 10 stones: Madagascar Andesine Labradorite (Pink Schiller) 1 loose stone (Multiple purchase discounts available)

Limited to 10 stones: Madagascar Andesine Labradorite (Pink Schiller) 1 loose stone (Multiple purchase discounts available)
Sold out Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}
Sold out ベニトアイト 0.154ctルース

Benitoite 0.154ct loose
Sold out Brazilian Paraiba Tourmaline 0.405ct loose stone (CuO2.7% CuO2.2%) GIA

Brazilian Paraiba Tourmaline 0.405ct loose stone (CuO2.7% CuO2.2%) GIA
Sold out タンザニア産ロードライトガーネット 6.091ctルース

Tanzanian Rhodolite Garnet 6.091ct Loose Stone
Sold out トリプライト 0.439ctルース

Triplite 0.439ct loose stone
Sold out トリプライト 0.383ctルース

Triplite 0.383ct loose stone
Sold out オーストラリア産ブラックオパール 0.232ctルース

Australian black opal 0.232ct loose stone
Sold out オーストラリア産ブラックオパール 0.977ctルース

Australian black opal 0.977ct loose stone
Sold out オーストラリア産ブラックオパール 0.679ctルース

Australian black opal 0.679ct loose stone
Sold out オーストラリア産ブラックオパール 0.294ctルース

Australian black opal 0.294ct loose
Sold out ルビー 0.295ctルース

Pigeon Blood Ruby 0.295ct Loose AIGS
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.573ctルース

Rainbow Garnet (Andradite Garnet) 0.573ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.785ctルース

Rainbow Garnet (Andradite Garnet) 0.785ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out スペイン産スファレライト 1.753ctルース

Spanish Sphalerite 7.0mm/1.753ct loose stone
Sold out 合成モアッサナイト 0.682ctルース

Synthetic Moissanite 5.8mm/0.682ct Loose Stone
Sold out タンザナイト 0.760ctルース

Tanzanite 0.760ct loose stone (sugarloaf cut)
Sold out オレゴンサンストーン 0.713ctルース

Oregon Sunstone 0.713ct loose
Sold out マダガスカル産パパラチアサファイア 0.186ctルース 中宝鑑

[On Sale June 27th, 10 PM] Madagascar Padparadscha Sapphire 0.186ct Loose Stone - Central Gemological Laboratory
coming soon 【12563056掲載】マダガスカル産ロイヤルブルーサファイア 1.010ctルース

[Lottery Sale 0707_11] Madagascar Royal Blue Sapphire 1.010ct Loose Stone AIGS Sale price¥188,000
Sold out パパラチアサファイア 0.278ctルース

[On sale July 4th, 10 PM JST] Madagascar Padparadscha Sapphire 4.0mm/0.278ct Loose Stone, Central Gem Lab certified
coming soon コロンビア産ノンオイルエメラルド 0.350ctルース

【Lottery Sale 0629_07】Colombian No-Oil Emerald 0.350ct Loose GIA Sale price¥398,000
coming soon コロンビア産ノンオイルエメラルド 0.240ctルース

[Lottery Sale 0629_08] Colombian Non-Oil Emerald 4.1mm/0.240ct Loose GIA Sale price¥458,000
coming soon 【12562561掲載】非加熱モンタナサファイア（ヨーゴ産） 0.173ctルース

[Lottery Sale 0707_10] Unheated Montana Sapphire (Yogo Mine) 0.173ct Loose Stone with Japan-Germany Gemological Report Sale price¥128,000
Sold out 中国・湖南省シンシャ（辰砂・シナバー） 1.750ctルース

[On sale June 27th, 10 PM JST] Chinese Cinnabar from Hunan Province, 1.750ct Loose Stone with Certificate
Sold out 中国・湖南省シンシャ（辰砂・シナバー） 1.508ctルース

[Sales begin June 27th, 10 PM] Chinese Hunan Cinnabar 1.508ct Loose Stone with Certification
Sold out アメリカ産ネプチュナイト 0.224ctルース

[Lottery Sale 0707_05] US Neptunite 4.0mm/0.224ct Loose Stone with Certificate

Sold out ブラジル産バイカラーパライバトルマリン 0.190ctルース

Brazilian Bi-color Paraiba Tourmaline 0.190ct Loose (CuO: 2.06% MnO: 1.31%) with Japan-Germany Gemological Analysis Report

Sold out アメリカ産ネプチュナイト 0.162ctルース

U.S.-origin Neptunite 0.162ct Loose Stone with Gemstone Report

Sold out アフガニスタン産グリーンアウイナイト 0.142ctルース

[On sale June 28th at 10 PM] Afghan Green Hauyne 0.142ct Loose Gemstone with Certificate
Sold out マダガスカル産ペツォッタイト 0.202ctルース

[On sale June 30th, 10 PM JST] Petzottaite from Madagascar, 0.202ct Loose Gemstone with Certificate
Sold out ブラジル産アレキサンドライト 0.286ctルース

[On sale June 30th at 10 PM] Brazilian Silky Alexandrite 0.286ct Loose Stone with Certificate
coming soon 【12563390掲載】ミャンマー産非加熱ジェダイスピネル 0.430ctルース

[Lottery Sale 0707_12] Unheated Burmese Jadeite Spinel 0.430ct Loose Stone AIGS Sale price¥158,000
タンザニア産ジルコン 1.305ctルース

[Published as 12563382] Loose Tanzanian Zircon 1.305ct Sale price¥13,800
Sold out [Lottery Sale ③] [For Winners Only] [Listed as 12563378] Sri Lankan Alexandrite 0.320ct Loose Stone GIA

[Lottery Sale ③] [For Winners Only] [Listed as 12563378] Sri Lankan Alexandrite 0.320ct Loose Stone GIA

Sold out ジンバブエ産ユークレース 0.054ctルース 鑑別書

[On Sale June 28th, 10 PM JST] Zimbabwe Euclase 0.054ct Loose Gemstone with Certificate
Sold out [On sale July 3 at 10 PM JST] From Hong Kong: Afghani Green Hauyne, single stone, all stones with a gemological certificate. (Multiple purchase discount available)

[On sale July 3 at 10 PM JST] From Hong Kong: Afghani Green Hauyne, single stone, all stones with a gemological certificate. (Multiple purchase discount available)

Sold out ボリビア産アメトリン16.867ctルース

Bolivian Ametrine 16.867ct loose stone
Sold out アルマンディンガーネット 0.660ctルース

Almandine Garnet 0.660ct Loose
Sold out Amethyst 9.860ct loose stone

Amethyst 9.860ct loose stone
Sold out ジンバブエ産ユークレース 0.070ctルース

【On Sale 6/25 10 PM JST】Euclase from Zimbabwe 0.070 ct Loose Stone with Certificate
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.610ctルース

[On sale 10 PM JST, June 23] Madagascar Andesine-Labradorite (Common name: Rainbow Moonstone) 5.0mm/0.610ct Loose Stone

Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.640ctルース

【Sale begins June 25th at 10 PM JST】 Madagascar Andesine-Labradorite (Common Name: Rainbow Moonstone) 0.640 ct Loose Stone
Sold out マダガスカル産カナリーイエロークリソベリル 0.292ctルース

[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 4.2mm/0.292ct Loose Stone 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.