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tanzanite

Tanzanite, the December birthstone, is the name given to blue to violet zoisite. It is also known for its strong pleochroism, which means that its color changes depending on the angle from which it is viewed. Its Mohs hardness is 6-7, but it has a cleavage that makes it vulnerable to impacts from certain directions, so if you wear it as jewelry, you should be careful not to expose it to strong impacts.

Carats Gem Magazine
" Tanzanite "


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タンザニア産タンザナイト 0.272ctルース

Tanzanite from Tanzania 0.272ct loose stone Sale price¥8,800
【スタッフセレクション】タンザニア産タンザナイト 0.262ctルース（セミオーダーメイドセッ

[Staff Selection] Tanzanite 0.262ct loose stone from Tanzania (semi-custom made set) Sale price¥74,800
Tanzanite 1.891ct loose stone

Tanzanite 1.891ct loose stone Sale price¥39,800
Tanzanite 1.116ct loose stone

Tanzanite 1.116ct loose stone Sale price¥29,800
タンザナイト 0.754ctルース

Tanzanite 0.754ct loose stone Sale price¥9,800
バイカラータンザナイト 1.677ct原石

Bicolor Tanzanite 1.677ct rough stone Sale price¥8,800
バイカラータンザナイト 3.856ct原石

Bicolor Tanzanite 3.856ct rough stone Sale price¥19,800
バイカラータンザナイト 5.582ct原石

Bicolor Tanzanite 5.582ct rough stone Sale price¥29,800
タンザナイト 1.004ctルース

Tanzanite 1.004ct loose stone Sale price¥22,800
Tanzanite 4.8mm/0.494ct loose stone

Tanzanite 4.8mm/0.494ct loose stone Sale price¥15,800
Bicolor Zoisite 1.100ct Loose Stone (Bicolor Tanzanite)

Bicolor Zoisite 1.100ct Loose Stone (Bicolor Tanzanite) Sale price¥19,800
Bicolor Zoisite 0.450ct Loose Stone (Bicolor Tanzanite)

Bicolor Zoisite 0.450ct Loose Stone (Bicolor Tanzanite) Sale price¥18,800
ラベンダータンザナイト 0.784ctルース

Lavender Tanzanite 0.784ct loose stone Sale price¥14,800
タンザナイト 0.580ctルース

Tanzanite 5mm/0.580ct loose stone (sugarloaf cut) Sale price¥9,800
Tanzanite 0.349ct loose

Tanzanite 0.349ct loose Sale price¥9,800
タンザナイト 0.328ctルース

Tanzanite 0.328ct loose stone Sale price¥8,800
バイカラータンザナイト 0.581ctルース

Bicolor tanzanite 0.581ct loose Sale price¥23,800
【12546376更新】タンザナイト 1.593ctルース

Tanzanite 1.593ct loose Sale price¥15,800
【12546375更新】タンザナイト 1.297ctルース

Tanzanite 1.297ct loose Sale price¥12,960
タンザナイト 0.449ctルース

Tanzanite 0.449ct loose Sale price¥6,980
バイカラータンザナイト 0.479ctルース

Bicolor tanzanite 0.479ct loose Sale price¥24,800
タンザニア産ピンクゾイサイト 6.7mm/1.393ctルース（ピーチタンザナイト）

Pink zoisite from Tanzania 6.7mm/1.393ct loose (peach tanzanite) Sale price¥148,000
タンザニア産バイカラータンザナイト 1.165ct原石

Bicolor tanzanite 1.165ct rough stone from Tanzania Sale price¥9,800
タンザニア産バイカラータンザナイト 1.121ct原石

Bicolor tanzanite 1.121ct rough stone from Tanzania Sale price¥8,800
タンザニア産バイカラータンザナイト 0.492ct原石

Bicolor tanzanite 0.492ct raw stone from Tanzania Sale price¥8,800
Tanzanite 2.358ct loose

Tanzanite 2.358ct loose Sale price¥69,800
【サンジェ氏】タンザナイト 0.810ctルース - カラッツSTORE

Tanzanite 0.810ct loose stone Sale price¥12,800
タンザナイト 1.360ctルース

Tanzanite 1.360ct loose stone Sale price¥49,800
K18タンザナイト1ct リング - KARATZ STORE｜カラッツSTORE

K18 Tanzanite 1.0ct Ring Sale price¥79,800
Sold out Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}

Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}

Sold out Bicolor tanzanite 2.270ct loose

Bicolor tanzanite 2.270ct loose

Sold out タンザニア産タンザナイト 0.780ctルース

【9/9 22時販売】【さくらインカット】タンザニア産タンザナイト 6.0mm/0.780ctルース
Sold out タンザナイト 1.024ctルース

Tanzanite 1.024ct loose
Sold out バイカラータンザナイト 0.739ctルース

Tanzanian bicolor tanzanite 0.739ct loose stone
Sold out Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)

Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)
Sold out K18PGベニトアイト0.19 リング

K18PG American Benitoite 0.19ct Tanzanite Ring
Sold out Tanzanite 0.781ct loose stone

Tanzanite 0.781ct loose stone
Sold out タンザナイト 0.579ctルース

Tanzanite 5mm/0.579ct loose stone
Sold out タンザナイト 0.525ctルース

Tanzanite 5mm/0.525ct loose stone
Sold out タンザナイト 0.435ctルース

Tanzanite 5mm/0.435ct loose stone
Sold out タンザナイト 2.362ctルース

Tanzanite 2.362ct loose

Sold out タンザナイト 2.477ctルース

Tanzanite 2.477ct loose

Sold out タンザナイト 2.273ctルース

Tanzanite 2.273ct loose

Sold out タンザナイト 2.880ctルース

Tanzanite 2.880ct loose

Sold out タンザナイト 4.570ctルース（バフトップ）

Tanzanite 4.570ct loose (buff top)

Sold out 【ダンデライオンカット】ラベンダータンザナイト6mmルース - カラッツSTORE

[Dandelion cut] Lavender tanzanite 6mm loose with patch

Sold out Bicolor Zoisite 2.20ct loose (Bicolor Tanzanite)

Bicolor Zoisite 2.20ct loose (Bicolor Tanzanite)

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.