Bicolor/Party color system

Some gemstones exhibit multiple colors within a single stone; two colors are called bicolor, three colors are tricolor, and multiple colors are called particolor. Some are clearly separated, while others have a gradation, so I think these are gemstones that give you a sense of their individuality.

Karatz GemMagazine
" Bicolor gemstone "

[On sale at 22:00 on 4/13] Tanzanian bicolor zoisite 0.716ct loose stone Sale price¥9,800

[On sale at 22:00 on 4/15] Tanzanian bicolor tanzanite 0.815ct loose stone Sale price¥11,000

[On sale at 22:00 on 4/15] Tanzanian bicolor tanzanite 0.739ct loose stone Sale price¥9,800

[On sale at 22:00 on 4/17] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.783ct loose stone Sale price¥15,800

[On sale at 22:00 on 4/11] Brazilian Paraiba Tourmaline in Quartz 0.712ct loose stone Sale price¥15,800

[On sale at 22:00 on 4/17] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.728ct loose stone Sale price¥12,800

[On sale at 22:00 on 4/13] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.735ct loose stone Sale price¥15,800

[On sale from 10pm on 4/17] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.723ct loose stone Sale price¥15,800

[On sale at 10pm on 4/29] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.751ct loose stone Sale price¥15,800

[On sale at 22:00 on 4/13] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.704ct loose stone Sale price¥15,800

[On sale from 10pm on 4/17] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.656ct loose stone Sale price¥15,800

[On sale from 10pm on 4/11] [Cat cut (leopard print)] Amber 8.0mm/0.664ct loose stone Sale price¥9,800

[On sale at 22:00 on 4/17] Synthetic black opal 1.209ct loose stone Sale price¥18,800

Ethiopian Opal 6.0mm/0.584ct Loose Sale price¥12,800

Malawi Bicolor Zircon 1.223ct Loose Stone Sale price¥55,800

Brazilian bicolor tourmaline 4.291ct loose stone Sale price¥55,800

Brazilian bicolor tourmaline 6.227ct loose stone Sale price¥69,800

Malawi Bicolor Zircon 0.355ct Loose Stone Sale price¥12,800

Bicolor sapphire 0.405ct loose Sale price¥25,800

【さくらシェイプ】ブラジル産アメトリン 20mm/21.554ct《コラボ》ルース　ワッペン

[Sakura Shape] Brazilian Ametrine 20mm/21.554ct {Collaboration} Loose Patch Sale price¥98,000

Brazilian Pink Tourmaline 0.772ct Loose Stone Sale price¥12,800

Tanzanian bicolor sapphire 0.597ct loose stone Sale price¥18,800

Tanzanian bicolor sapphire 0.658ct loose stone Sale price¥14,800

Tanzanian bicolor sapphire 0.524ct loose stone Sale price¥14,800

Tanzanian bicolor sapphire 0.950ct loose stone Sale price¥25,800

Tanzanian bicolor sapphire 0.707ct loose stone Sale price¥18,800

Tanzanian bicolor sapphire 0.598ct loose stone Sale price¥16,800

Tanzanian bicolor sapphire 0.923ct loose stone Sale price¥25,800

Tanzanian bicolor sapphire 0.571ct loose stone Sale price¥15,800

Tanzanian bicolor sapphire 0.623ct loose stone Sale price¥16,800

Brazilian Medusa Quartz (Paraiba Quartz) 2.147ct loose stone Sale price¥6,980

Brazilian Medusa Quartz (Paraiba Quartz) 2.117ct loose stone Sale price¥6,980

Brazilian bicolor tourmaline 0.891ct loose stone Sale price¥9,800

Bicolor Fluorite 4.825ct Loose Sale price¥9,800

Bicolor Fluorite 6.210ct Loose Sale price¥9,800

Oregon Sunstone from the United States 11m/4.056ct loose stone (vortex cut) Sale price¥39,800

Afghanistan Bicolor Tourmaline 0.672ct Loose Stone Sale price¥9,800

Afghanistan Bicolor Tourmaline 0.471ct Loose Stone Sale price¥9,800

Afghanistan Bicolor Tourmaline 0.673ct Loose Stone Sale price¥15,800

Brazilian Indigolite Tourmaline in Quartz 1.626ct Loose Stone Sale price¥12,800

Brazilian Indigolite Tourmaline in Quartz 2.036ct Loose Stone Sale price¥12,800

Sri Lankan bicolor sapphire 0.390ct loose stone Sale price¥12,800

Tanzania Bicolor Zircon 0.801ct Loose Stone Sale price¥9,800

Brazilian Mica in Quartz (Mica in Quartz) 0.990ct Loose Sale price¥6,980

Brazilian Mica in Quartz (Mica in Quartz) 0.701ct Loose Stone Sale price¥6,980

Brazilian Mica in Quartz (Mica in Quartz) 1.009ct Loose Stone Sale price¥9,800

Brazilian Mica in Quartz (Mica in Quartz) 0.622ct Loose Stone Sale price¥6,980

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） 3.564ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 3.564ct loose stone Sale price¥25,800

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.

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.

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