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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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タンザナイト 0.328ctルース

Tanzanite 0.328ct loose stone Sale price¥8,800
【12546376更新】タンザナイト 1.593ctルース

Tanzanite 1.593ct loose Sale price¥15,800
タンザナイト 1.360ctルース

Tanzanite 1.360ct loose stone Sale price¥49,800
タンザナイト 2.050ctルース

Tanzanian tanzanite 2.050ct loose Sale price¥29,800
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 Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}

Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}
Sold out 《Limited to 16 stones》1 tanzanite stone (octagonal cut, 3.0mm)《Multiple purchase discount available》

《Limited to 16 stones》1 tanzanite stone (octagonal cut, 3.0mm)《Multiple purchase discount available》
Sold out Limited to 13 stones Gem gacha💎 Beautiful colored tanzanite 7mm, special cut sphene, heliodor (lots of inclusions) 1 loose stone Multiple purchase discounts available

Limited to 13 stones Gem gacha💎 Beautiful colored tanzanite 7mm, special cut sphene, heliodor (lots of inclusions) 1 loose stone Multiple purchase discounts available
Sold out [Available at 10 PM on January 10th] Zoisite Gacha with Certificate of Authenticity (Includes Pink Zoisite, Yellow Zoisite, Green Zoisite, and Tanzanite, 5mm) [Multiple Purchase Discounts Available]

[Available at 10 PM on January 10th] Zoisite Gacha with Certificate of Authenticity (Includes Pink Zoisite, Yellow Zoisite, Green Zoisite, and Tanzanite, 5mm) [Multiple Purchase Discounts Available]
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 [Available at 10 PM on January 24th] 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring

[Available at 10 PM on January 24th] 18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring
Sold out バイカラータンザナイト 0.581ctルース

Bicolor tanzanite 0.581ct loose
Sold out タンザニア産タンザナイト 0.637ctルース

Tanzanite from Tanzania 0.637ct loose stone
Sold out "Purple Sun Night" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm)

"Purple Sun Night" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm)

Sold out 【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
Sold out 【KEN氏】ラベンダータンザナイト 1.620ctルース - カラッツSTORE

Lavender Tanzanite 1.620ct Loose
Sold out タンザニア産タンザナイト 0.780ctルース

[Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.780ct Loose
Sold out タンザナイト 1.024ctルース

Tanzanite 1.024ct loose
Sold out タンザナイト 1.540ctルース

Tanzanite 1.540ct loose stone
Sold out バイカラータンザナイト 0.585ctルース

Tanzanian bicolor tanzanite 5.0mm/0.585ct loose stone
Sold out タンザナイト 5.930ct原石

Tanzanite rough stone from Tanzania 5.930ct
Sold out Limited to 9 stones: 1 Tanzanian purple zoisite (purple tanzanite) loose stone (4mm, round cut) Multiple purchase discounts available

Limited to 9 stones: 1 Tanzanian purple zoisite (purple tanzanite) loose stone (4mm, round cut) Multiple purchase discounts available
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 K18PG ブラジル産カラーシフトアメジスト・ハックマナイト・ピンクサファイアリング

K18PG Brazilian color shift amethyst, hackmanite, pink sapphire ring

Sold out 【さくらインカット】タンザナイト 6.0mm/0.701ctルース

[12557950] Tanzanite 0.701ct {Collaboration} Loose Stone

Sold out タンザニア産タンザナイト 0.495ctルース

Tanzanite from Tanzania 0.495ct loose stone
Sold out タンザナイト 0.469ctルース

Tanzanite from Tanzania 0.469ct loose stone
Sold out タンザニア産タンザナイト 0.481ctルース

Tanzanite from Tanzania 5.0mm/0.481ct loose stone
Sold out K18YGアフガニスタン産クンツァイト 0.74ct・タンザナイト・サファイアリング

K18YG Afghan Kunzite 0.74ct, Tanzanite, Sapphire Ring
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 タンザニア産タンザナイト 0.298ctルース

Tanzanite from Tanzania 0.298ct loose stone
Sold out タンザナイト 0.856ctルース

Tanzanite from Tanzania 0.856ct loose stone
Sold out K18PGベニトアイト0.19 リング

K18PG American Benitoite 0.19ct Tanzanite Ring
Sold out タンザニア産タンザナイト 0.945ctルース

Tanzanite from Tanzania 6.5mm/0.945ct loose stone

Sold out タンザナイト 1.577ctルース

Tanzanite from Tanzania 1.577ct loose stone
Sold out タンザナイト 1.243ctルース

Tanzanite from Tanzania 1.243ct loose stone
Sold out タンザニア産タンザナイト 0.567ctルース

Tanzanite from Tanzania 0.567ct loose stone
Sold out タンザナイト 2.011ctルース

Tanzanite from Tanzania 2.011ct loose stone
Sold out タンザナイト 6.006ctルース

Tanzanite from Tanzania 6.006ct loose stone
Sold out タンザニア産タンザナイト 0.492ctルース

Tanzanite from Tanzania 0.492ct loose stone

Sold out タンザニア産タンザナイト 1.250ctルース

Tanzanite from Tanzania 1.250ct loose stone

Sold out タンザニア産タンザナイト 6mm/0.889ct《コラボ》ルース ワッペン

[Sakura Shape] Tanzanite from Tanzania 6mm/0.889ct {Collaboration} Loose Patch

Sold out タンザニア産バイカラータンザナイト 2.454ct原石

Tanzanian bicolor tanzanite rough stone 2.454ct

Sold out タンザニア産タンザナイト 0.272ctルース

Tanzanite from Tanzania 0.272ct loose stone
Sold out Tanzanite 1.116ct loose stone

Tanzanite 1.116ct loose stone
Sold out タンザナイト 0.754ctルース

Tanzanite 0.754ct loose stone
Sold out バイカラータンザナイト 3.856ct原石

Bicolor Tanzanite 3.856ct rough stone

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.