January birthstone

Many people may have the impression that garnet is a red gemstone, but it actually comes in many shades. In fact, garnet is not the name of a single gemstone, but the name of a group of minerals with similar chemical compositions. Also, there are some types that are made by mixing several types, so I think it would be fun to collect gemstones with different colors and types. Some types appear to change color depending on the light source.

Karatz GemMagazine “ List of January birthstones and birthstones ”

[On Sale at 10 PM on January 8th] Tanzanian Dragon Garnet 1.181ct Loose Stone Sale price¥29,800

[On Sale at 10 PM on January 8th] Tanzanian Dragon Garnet 1.042ct Loose Stone Sale price¥28,800

[On Sale at 10 PM on January 1st] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.183ct Loose Stone Sale price¥18,800

[1/1 10pm Sale] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.189ct Loose Stone Sale price¥18,800

[On Sale at 10 PM on January 1st] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.221ct Loose Stone Sale price¥22,800

Russian demantoid garnet (horsetail recognized) 6.3mm/1.058ct loose Sale price¥398,000

[12/17 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 4.2mm/0.325ct Loose Stone Sale price¥59,800

[12/10 22:00] Mali Garnet (Grossular/Andradite Garnet) 1.008ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥35,800

[12/12 22:00 Sale] Mali Garnet (Grossular/Andradite Garnet) 0.741ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥25,800

[On Sale at 10 PM on January 10th] Kenyan Tsavorite 0.806ct Loose Stone Sale price¥39,800

[12/21 22:00] Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥12,800

Bicolor grossular garnet 0.782ct loose Sale price¥12,800

[Available at 10 PM on December 20th] Mali Garnet (Grossular/Andradite Garnet) 0.872ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥29,800

[12/21 22:00] Myanmar Leuco Garnet 0.542ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[On Sale at 10 PM on December 5th] YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct Loose Stone Sale price¥12,800

[Rouge cut] Almandine garnet 2.090ct loose Sale price¥8,800

[Rouge cut] Almandine garnet 2.076ct loose Sale price¥8,800

【サンジェ氏】YAG（イットリウムアルミニウムガーネット） 7mm/1.775ctルース

YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone Sale price¥9,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 2.483ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 2.483ct loose Sale price¥15,800

Sold out

ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 2.5mm/0.141ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 2.5mm/0.141ct loose

[11/29 22:00] Tanzanian Almandine Garnet 2.697ct Loose Stone Sale price¥18,800

[11/29 22:00 Sale] Tanzanian Almandine Garnet 1.282ct Loose Stone Sale price¥13,800

[12/31 22:00] Tanzanian Almandine Garnet 0.998ct Loose Stone Sale price¥8,800

[12/2 22:00] Tanzanian Almandine Garnet 0.930ct Loose Stone Sale price¥9,800

[11/26 22:00] Tanzanian Almandine Garnet 0.902ct Loose Stone Sale price¥12,800

[11/29 22:00 Sale] Tanzanian Almandine Garnet 0.750ct Loose Stone Sale price¥9,800

[12/31 22:00] Tanzanian Almandine Garnet 0.885ct Loose Stone Sale price¥8,800

[12/15 22:00] Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone Sale price¥12,800

[11/18 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 3.8mm/0.249ct Loose Stone Sale price¥39,800

[On sale November 16th at 10pm] [Limited to 32 stones] Namibian Mandarin Garnet Loose Stone (Round Cut, 2.5mm) [Multiple purchase discounts available] Sale price¥5,980

[On Sale 11/23 10pm] GGG (Gadolium Gallium Garnet) 4.0mm/0.675ct Loose Stone Sale price¥8,800

[11/22 22:00] Sri Lankan Hessonite Garnet 1.968ct Loose Stone Sale price¥12,800

[12/15 22:00] Tanzanian Almandine Garnet 11.0mm/6.787ct Loose Stone Sale price¥49,800

[1/4 22:00 Sale] Tanzanian Almandine Garnet 10mm/6.196ct Loose Stone Sale price¥29,800

[On Sale at 10 PM on January 9th] 3.662ct Rhodolite Garnet Loose Stone from Mozambique Sale price¥25,800

[12/31 22:00] Tanzanian Almandine Garnet 6.5mm/1.071ct Loose Stone Sale price¥11,000

[12/3 22:00] Tanzanian Almandine Garnet 2.897ct Loose Stone Sale price¥22,800

[1/4 22:00 Sale] Tanzanian Almandine Garnet 2.169ct Loose Stone Sale price¥21,800

[1/4 22:00 Sale] Mozambique Rhodolite Garnet 3.161ct Loose Stone Sale price¥22,800

[12/15 22:00 Sale] Tanzanian Rhodolite Garnet 1.935ct Loose Stone with Certificate of Authenticity Sale price¥18,800

[1/9 22:00 Sale] Tanzanian Rhodolite Garnet 2.081ct Loose Stone, Japan-Germany Qualification Sale price¥18,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.732ctルース

[On Sale 11/27 at 10 PM] Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture, 5.5mm/0.732ct Loose Stone (Rose Cut) Sale price¥5,980

[On Sale 11/20 at 10 PM] Russian Demantoid Garnet (Horsetail Certified) 3.3mm/0.162ct Loose Stone Sale price¥39,800

[11/20 22:00 Sale] Tanzanian Almandine Garnet 2.972ct Loose Stone Sale price¥18,800

[11/20 22:00 Sale] Tanzanian Rhodolite Garnet 3.486ct Loose Stone Sale price¥24,800

[11/20 22:00 Sale] Tanzanian Almandine Garnet 1.564ct Loose Stone Sale price¥12,800

[On Sale 11/22 10pm] Tanzanian Rhodolite Garnet 5.3mm/0.903ct Loose Stone Sale price¥9,800

パイロープ・スペサルティンガーネット（カラーチェンジガーネット） 1.234ctルース

Pyrope spessartine garnet (color change garnet) 1.234ct loose Sale price¥35,800

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.