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 "

[On sale at 10pm on January 21st] Tanzanite from Tanzania 0.467ct loose stone Sale price¥9,800

[On Sale at 10 PM on January 21st] Tanzanite from Tanzania 0.436ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on January 21st] Tanzanite from Tanzania 0.730ct Loose Stone Sale price¥29,800

[On Sale at 10 PM on January 17th] Tanzanite from Tanzania 0.680ct Loose Stone Sale price¥15,800

[Sale at 10 PM on January 12th] [Sakura In-Cut] Tanzanite from Tanzania, 6.0mm/0.774ct Loose Stone Sale price¥69,800

[1/11 22:00 Sale] Tanzanite from Tanzania 2.777ct Loose Stone Sale price¥98,000

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980

December Special Campaign: Limited to 14 stones. December birthstone: Tanzanite, loose stone (5x7mm, oval cut). Multiple purchase discounts available. Sale price¥8,800

Limited to 10 stones: Tanzanite rough stone gacha including bicolor pink tanzanite rough stones (average 4.2 carats) [Multiple purchase discounts available] Sale price¥6,980

Tanzanite rough and loose stone set of 2 (average 3ct, cushion cut) from Tanzania {Multiple purchase discounts available} Sale price¥6,980

Bicolor tanzanite 0.479ct loose Sale price¥18,800

18K Yellow Gold Lavender Tanzanite 3.5mm/0.211ct Diamond Ring Sale price¥79,800

Tanzanite from Tanzania 7.4mm/1.747ct loose stone Sale price¥59,800

Tanzanite from Tanzania 0.342ct loose stone Sale price¥7,980

"Purple Sun Night" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm) Sale price¥98,000

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¥128,000

Bicolor tanzanite 1.165ct rough stone from Tanzania Sale price¥7,980

Bicolor tanzanite 1.121ct rough stone from Tanzania Sale price¥6,980

Bicolor tanzanite 0.492ct raw stone from Tanzania Sale price¥6,980

Tanzanite 4.940ct rough stone Sale price¥3,980

Tanzanite 41.690ct loose Sale price¥2,480,000

Tanzanite 2.726ct loose Sale price¥110,000

Tanzanite 2.418ct loose Sale price¥55,800

[On sale at 10pm on 7/21] Tanzanian bicolor tanzanite 2.304ct loose stone Sale price¥59,800

Tanzanian Lavender Tanzanite 2.219ct Loose Stone Sale price¥55,800

Tanzanite from Tanzania 0.350ct loose stone Sale price¥8,800

Tanzanite from Tanzania 0.237ct loose stone Sale price¥8,800

Tanzanite from Tanzania 0.432ct loose stone Sale price¥12,800

Tanzanite 0.477ct loose stone (princess cut) from Tanzania Sale price¥12,800

Tanzanite from Tanzania 0.520ct loose stone Sale price¥12,800

Tanzanian bicolor tanzanite 1.284ct loose stone Sale price¥29,800

Tanzanite from Tanzania 5.8mm/0.803ct loose stone Sale price¥35,800

Tanzanite 1.055ct loose stone Sale price¥29,800

Tanzanite 1.458ct loose stone Sale price¥39,800

Pt950 Tanzanian Tanzanite 1.357ct Blue Zircon Pink Sapphire Ring Sale price¥128,000

Tanzanite from Tanzania 4.9mm/0.531ct loose stone Sale price¥12,800

Tanzanite from Tanzania 4.7mm/0.503ct loose stone Sale price¥14,800

Tanzanite from Tanzania 0.331ct loose stone Sale price¥5,980

Tanzanite 0.513ct loose stone (sugarloaf cut) from Tanzania Sale price¥9,800

Tanzanite from Tanzania 0.432ct loose stone Sale price¥9,800

Tanzanite from Tanzania 0.580ct loose stone Sale price¥14,800

Tanzanite from Tanzania 0.269ct loose stone Sale price¥9,800

Tanzanite from Tanzania 0.609ct loose stone Sale price¥15,800

Myanmar spinel and Tanzanite 7 stone set ring (Alterno setting) Sale price¥79,800

Tanzanian bicolor tanzanite 4.804ct rough stone Sale price¥18,800

Tanzanian bicolor tanzanite 1.644ct rough and loose stone set of 2 Sale price¥8,800

Tanzanian bicolor tanzanite 3.018ct rough and loose stone set of 2 Sale price¥6,980

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.