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 "

【3/18 22時販売】《ツーソン新着》マラウイ産バイカラージルコン 1.223ctルース Sale price¥55,800

【3/15 22時販売】ブラジル産バイカラートルマリン 4.291ctルース Sale price¥55,800

【3/15 22時販売】ブラジル産バイカラートルマリン 6.227ctルース Sale price¥69,800

【3/16 22時販売】マラウイ産バイカラージルコン 0.355ctルース Sale price¥12,800

【3/8 22時販売】【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 Sale price¥98,000

【3/13 22時販売】ブラジル産バイカラートルマリン 1.356ctルース Sale price¥27,800

【2/26 22時販売】ブラジル産ピンクトルマリン 0.772ctルース Sale price¥12,800

[On sale at 22:00 on 2/16] Tanzanian bicolor sapphire 0.597ct loose stone Sale price¥18,800

[On sale at 22:00 on 2/20] Tanzanian bicolor sapphire 0.658ct loose stone Sale price¥14,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.524ct loose stone Sale price¥14,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.950ct loose stone Sale price¥25,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.707ct loose stone Sale price¥18,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.598ct loose stone Sale price¥16,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.923ct loose stone Sale price¥25,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.571ct loose stone Sale price¥15,800

[On sale at 22:00 on 2/19] Tanzanian bicolor sapphire 0.623ct loose stone Sale price¥16,800

[On sale 2/23 at 10pm] {New Arrival in Tucson} Brazilian Medusa Quartz (Paraiba Quartz) 2.147ct loose stone Sale price¥6,980

[On sale from 10pm on 2/20] {New Arrival in Tucson} Brazilian Medusa Quartz (Paraiba Quartz) 2.117ct Loose Stone Sale price¥6,980

[On sale from 10pm on 2/21] Brazilian bicolor tourmaline 0.891ct loose stone Sale price¥9,800

バイカラークリソベリル（通称名バイカラーアレキサンドライト） 0.902ctルース日独鑑

[On sale from 22:00 on 2/11] Bicolor Chrysoberyl (also known as Bicolor Alexandrite) 0.902ct Loose Stone, Japan-Germany Sale price¥298,000

[On sale at 22:00 on 2/10] Bicolor fluorite 4.825ct loose stone Sale price¥9,800

[On sale at 22:00 on 2/10] Bicolor fluorite 6.210ct loose stone Sale price¥9,800

[On sale 2/8 at 10pm] Oregon Sunstone from the USA 11m/4.056ct loose stone (vortex cut) Sale price¥39,800

[On sale at 22:00 on 2/9] Afghanistan bicolor tourmaline 0.672ct loose stone Sale price¥9,800

[On sale at 22:00 on 2/9] Afghanistan bicolor tourmaline 0.471ct loose stone Sale price¥9,800

[On sale at 22:00 on 2/9] Afghanistan Lazurite in Sodalite 1.607ct loose stone Sale price¥29,800

[On sale from 22:00 on 2/9] Afghanistan Lazurite in Sodalite 0.400ct loose stone Sale price¥12,800

[On sale at 22:00 on 2/10] Brazilian indigolite tourmaline in quartz 1.626ct loose stone Sale price¥12,800

[On sale at 22:00 on 2/10] Brazilian indigolite tourmaline in quartz 2.036ct loose stone Sale price¥12,800

[On sale at 22:00 on 2/11] Tanzanian bicolor zircon 0.801ct loose stone Sale price¥9,800

[On sale at 22:00 on 2/15] Tanzanian bicolor tanzanite 1.693ct loose stone Sale price¥42,800

[On sale 2/7 at 10pm] Brazilian mica in quartz (mica in quartz) 0.990ct loose stone Sale price¥6,980

[On sale from 22:00 on 2/5] Brazilian mica in quartz (mica in quartz) 0.701ct loose stone Sale price¥6,980

[On sale from 22:00 on 2/5] Brazilian mica in quartz (mica in quartz) 1.009ct loose stone Sale price¥9,800

[On sale from 22:00 on 2/5] 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

Mexican Opal 4.9mm/0.327ct Loose Sale price¥9,800

Mexican Opal 3.8mm/0.157ct Loose Sale price¥6,980

[On sale 2/13 at 10pm] Mexican Water Opal 3.8mm/0.174ct Loose Sale price¥8,800

Brazilian bicolor tourmaline 0.362ct loose stone Sale price¥8,800

Brazilian Bicolor Tourmaline 0.761ct Loose Stone (Rose Cut) Sale price¥6,980

Brazilian bicolor tourmaline 0.837ct loose stone Sale price¥15,800

Brazilian bicolor tourmaline 0.545ct loose stone (rose cut) Sale price¥5,980

Brazilian bicolor tourmaline 0.549ct loose stone (rose cut) Sale price¥8,800

Spanish bicolor sphalerite 0.765ct loose stone Sale price¥12,800

Spanish bicolor sphalerite 0.866ct loose stone Sale price¥12,800

Zimbabwe Bicolor Euclase 2.6mm/0.087ct Loose Stone Sale price¥55,800

Brazilian bicolor tourmaline 0.502ct loose stone Sale price¥9,800

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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