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 10 PM on January 18th] Tanzanian Bicolor Grossular Garnet 2.997ct Loose Sale price¥69,800

[On Sale at 10 PM on January 20th] Sri Lankan Bicolor Sapphire 0.607ct Loose Sale price¥15,800

Brazilian bicolor tourmaline 7.268ct loose stone Sale price¥158,000

Zambian bicolor tourmaline 4.019ct loose stone Sale price¥98,000

Zambian bicolor tourmaline 6.536ct loose stone Sale price¥128,000

Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose Sale price¥12,800

Brazilian bicolor tourmaline 4.497ct loose stone Sale price¥69,800

Myanmar Bicolor Star Sapphire 0.640ct Loose Sale price¥45,800

Illusion Bicolor Tourmaline 3.202ct Loose Stone Sale price¥69,800

Madagascar Bicolor Sapphire 0.266ct Loose Sale price¥16,800

Madagascar Bicolor Sapphire 0.318ct Loose Sale price¥25,800

Colombian bicolor fluorite 3.209ct loose stone Sale price¥18,800

Brazilian bicolor tourmaline 2.341ct loose stone Sale price¥79,800

Tanzanian bicolor sapphire 0.486ct loose stone Sale price¥12,800

Madagascar Bicolor Sapphire 0.633ct Loose Sale price¥39,800

Zimbabwean Bicolor Euclase 0.398ct Loose Stone Sale price¥39,800

Madagascar Bicolor Sapphire 0.278ct Loose Sale price¥8,800

Madagascar Bicolor Sapphire 0.324ct Loose Sale price¥9,800

Brazilian bicolor tourmaline 1.449ct loose stone Sale price¥19,800

Brazilian bicolor tourmaline 0.621ct loose stone Sale price¥12,800

Mexican Cantera Opal 14.690ct Loose Sale price¥12,800

[Rouge Cut] Brazilian Bicolor Tourmaline 0.578ct Loose Sale price¥9,800

Illusion Tourmaline (Iridescent Tourmaline) 0.622ct Loose Stone Sale price¥19,800

Tanzanian Bicolor Grossular Garnet 1.359ct Loose Stone Sale price¥49,800

#202512 Campaign Use / Tanzanian Bicolor Zoisite 1.006ct Loose Stone Sale price¥55,800

#202512 Campaign Use / Tanzanian Bicolor Zoisite 1.327ct Loose Stone Sale price¥59,800

Mongolian Bicolor Andesine 0.944ct Loose Stone Sale price¥15,800

Brazilian Bicolor Beryl 0.556ct Loose Stone Sale price¥29,800

Cat Cut (Leopard Print) Amber 0.906ct Loose Stone Sale price¥9,800

[12560244] Bicolor Zoisite 0.508ct Loose Stone Sale price¥7,980

Mexican Cantera Opal 2.125ct Loose Sale price¥39,800

Mexican Cantera Opal 8.331ct Loose Sale price¥39,800

Brazilian bicolor tourmaline 1.032ct loose stone Sale price¥25,800

Zimbabwe bicolor euclase 0.192ct loose stone Sale price¥39,800

Bicolor sapphire 0.301ct loose Sale price¥18,800

Madagascar Bicolor Sapphire 0.232ct Loose Sale price¥15,800

Madagascar Bicolor Sapphire 0.188ct Loose Sale price¥12,800

Brazilian bicolor topaz 2.618ct loose stone (untreated) Sale price¥18,800

Dendritic Opal 3.041ct Loose Sale price¥18,800

Pakistani Axinite (Green Tint) 1.389ct Loose Stone Sale price¥39,800

Afghanistan Lazurite in Sodalite 0.581ct Loose Stone Sale price¥18,800

Brazilian Lepidocrocite in Quartz 9.0mm/2.735ct Loose Stone Sale price¥14,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.794ct Loose Stone Sale price¥15,800

Mexican Cantera Opal 6.112ct Loose Sale price¥59,800

Mexican Cantera Opal 14.458ct loose stone (faceted cut) Sale price¥14,800

Synthetic Opal 2.026ct Loose Sale price¥19,800

Afghanistan Bicolor Tourmaline 1.653ct Loose Stone Sale price¥49,800

[On sale from 10pm on 5/18] Malawi bicolor zircon 0.621ct loose stone Sale price¥29,800

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.

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.