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1月誕生石

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 ”

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[Available at 10 PM on October 5th] Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone [Multiple purchase discounts available]

[Available at 10 PM on October 5th] Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone [Multiple purchase discounts available] Sale price¥3,980
【ルージュカット】アルマンディンガーネット 1.725ctルース

[Rouge cut] Almandine garnet 1.725ct loose Sale price¥7,980
マリ共和国マリガーネット（グロッシュラー/アンドラダイト・ガーネット） 4.5mm/0.497ctルース

Mali Garnet (Grossular/Andradite Garnet) 4.5mm/0.497ct Loose Sale price¥8,800
UVタイプミントガーネット 0.435ctルース

UV type mint garnet 0.435ct loose Sale price¥3,980
UVタイプミントガーネット 0.521ctルース

UV type mint garnet 0.521ct loose Sale price¥3,980
[On Sale at 10 PM on October 7th] [Rouge Cut] 5.952ct Loose Almandine Garnet from Mozambique

[On Sale at 10 PM on October 7th] [Rouge Cut] 5.952ct Loose Almandine Garnet from Mozambique Sale price¥15,800
[On sale from 10/7 at 10pm] [Rouge cut] 5.841ct loose almandine garnet from Mozambique

[On sale from 10/7 at 10pm] [Rouge cut] 5.841ct loose almandine garnet from Mozambique Sale price¥14,800
[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.850ct Loose Stone

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.850ct Loose Stone Sale price¥22,800
[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.818ct Loose Stone

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.818ct Loose Stone Sale price¥22,800
[On Sale at 10 PM on October 9th] Tanzanian Dragon Garnet 5.0mm/0.767ct Loose Stone

[On Sale at 10 PM on October 9th] Tanzanian Dragon Garnet 5.0mm/0.767ct Loose Stone Sale price¥19,800
[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.931ct Loose Stone

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.931ct Loose Stone Sale price¥25,800
[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 1.015ct Loose Stone

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 1.015ct Loose Stone Sale price¥29,800
[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[On sale at 10 PM on September 28th] [Limited to 9 sets] Rainbow Garnet Rough Stone + 2 Loose Stones Set from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available] Sale price¥6,980
タンザニア産ドラゴンガーネット 0.710ctルース

[On Sale at 10 PM on September 23rd] Tanzanian Dragon Garnet 0.710ct Loose Stone Sale price¥19,800
マダガスカル産カラーチェンジガーネット 0.855ctルース

Color change garnet from Madagascar 0.855ct loose Sale price¥9,800
マダガスカル産カラーチェンジガーネット 0.648ctルース

Color change garnet from Madagascar 0.648ct loose Sale price¥8,800
アメリカ産アントヒルガーネット 5mm/0.540ctルース

American Anthill Garnet (Chrome Pyrope Garnet) 5mm/0.540ct Loose Sale price¥22,800
ロシア産デマントイドガーネット（ホーステール認む） 0.291ctルース

Russian demantoid garnet (horsetail recognized) 0.291ct loose Sale price¥49,800
YAG（イットリウムアルミニウムガーネット） 1.792ctルース - カラッツSTORE

YAG (yttrium aluminum garnet) 1.792ct loose Sale price¥12,800
【サンジェ氏】YAG（イットリウムアルミニウムガーネット） 6.5mm/1.774ctルース - カラッツSTORE

YAG (Yttrium Aluminum Garnet) 6.5mm/1.774ct loose stone Sale price¥12,800
マリ共和国産マリガーネット（グロッシュラー/アンドラダイト・ガーネット） 0.393ctルース

[Available at 10 PM on September 22nd] Mali Garnet (Grossular/Andradite Garnet) 4.2mm/0.393ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥9,800
[Available at 10 PM on September 20th] Limited to 20 stones: Russian Demantoid Garnet (Round Cut, 2.0mm) Loose Stone [Multiple Purchase Discounts Available]

[Available at 10 PM on September 20th] Limited to 20 stones: Russian Demantoid Garnet (Round Cut, 2.0mm) Loose Stone [Multiple Purchase Discounts Available] Sale price¥3,980
【12559437掲載】タンザニア産バイカラーグロッシュラーガーネット 1.359ctルース

[On Sale at 10 PM on October 3rd] Tanzanian Bicolor Grossular Garnet 1.359ct Loose Sale price¥49,800
モザンビーク産パイロープアルマンディンガーネット 1.455ctルース

[On Sale at 10 PM on September 29th] 1.455ct Pyrope Almandine Garnet Loose Stone from Mozambique Sale price¥15,800
【12558015掲載】アメリカ産アントヒルガーネット 0.822ctルース

[On Sale at 10 PM on October 3rd] American Anthill Garnet 0.822ct Loose Stone Sale price¥19,800
ミャンマー産リューコガーネット 0.294ctルース

Leuko garnet from Myanmar 0.294ct loose Sale price¥15,800
ロシア産デマントイドガーネット（ホーステール認む） 0.214ctルース

Russian demantoid garnet (horsetail recognized) 0.214ct loose Sale price¥49,800
ロシア産デマントイドガーネット（ホーステール認む） 4.2mm/0.336ctルース

Russian demantoid garnet (horsetail recognized) 4.2mm/0.336ct loose Sale price¥79,800
ロシア産デマントイドガーネット（ホーステール認む） 4.4mm/0.394ctルース

Russian demantoid garnet (horsetail recognized) 4.4mm/0.394ct loose Sale price¥69,800
ロシア産デマントイドガーネット（ホーステール認む） 4.6mm/0.423ctルース

Russian demantoid garnet (horsetail recognized) 4.6mm/0.423ct loose Sale price¥79,800
ロシア産デマントイドガーネット（ホーステール認む） 5.8mm/0.876ctルース

Russian demantoid garnet (horsetail recognized) 5.8mm/0.876ct loose Sale price¥258,000
ロシア産デマントイドガーネット（ホーステール認む） 5.3mm/0.633ctルース

Russian demantoid garnet (horsetail recognized) 5.3mm/0.633ct loose Sale price¥198,000
タンザニア産アルマンディンガーネット 2.992ctルース

[Sold at 10pm on September 26th] Tanzanian Almandine Garnet 2.992ct Loose Stone, Japan-Germany Qualification Sale price¥15,800
タンザニア産アルマンディンガーネット 3.089ctルース

[Sold at 10pm on September 26th] Tanzanian Almandine Garnet 3.089ct Loose Stone, Japan-Germany Qualification Sale price¥18,800
coming soon 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） 0.321ctルース

[10/11 22:00] Rainbow Garnet from Tenkawa Village, Nara Prefecture, 3.9mm/0.321ct Loose Stone (Rose Cut) Sale price¥8,800
タンザニア産ロードライトガーネット 0.801ctルース

[On Sale at 10 PM on September 14th] Tanzanian Rhodolite Garnet 0.801ct Loose Stone Sale price¥9,800
タンザニア産ロードライトガーネット 0.405ctルース

[On Sale at 10 PM on September 26th] Tanzanian Rhodolite Garnet 0.405ct Loose Stone Sale price¥6,980
タンザニア産ドラゴンガーネット 0.829ctルース

[On Sale at 10 PM on September 19th] Tanzanian Dragon Garnet 0.829ct Loose Stone Sale price¥22,800
タンザニア産ドラゴンガーネット 0.977ctルース

[On Sale at 10 PM on September 15th] Tanzanian Dragon Garnet 0.977ct Loose Stone Sale price¥27,800
[On Sale at 10pm on October 5th] Tanzanian Dragon Garnet 0.754ct Loose Stone

[On Sale at 10pm on October 5th] Tanzanian Dragon Garnet 0.754ct Loose Stone Sale price¥19,800
ドラゴンガーネット 0.754ctルース

[On Sale at 10 PM on September 13th] Tanzanian Dragon Garnet 0.754ct Loose Stone Sale price¥19,800
[On sale at 10 PM on September 6th] Limited to 8 stones: Kite cut loose stone (Illusion Sunstone, Sapphire, Emerald, Spessartine Garnet, etc.) [Multiple purchase discounts available]

[On sale at 10 PM on September 6th] Limited to 8 stones: Kite cut loose stone (Illusion Sunstone, Sapphire, Emerald, Spessartine Garnet, etc.) [Multiple purchase discounts available] Sale price¥5,980
[On sale September 5th at 10 PM] Limited to 20 stones: Russian Demantoid Garnet (Horsetail inclusions, approximately 2mm) Loose Stone [Multiple purchase discounts available]

[On sale September 5th at 10 PM] Limited to 20 stones: Russian Demantoid Garnet (Horsetail inclusions, approximately 2mm) Loose Stone [Multiple purchase discounts available] Sale price¥5,980
[On sale September 5th at 10 PM] [Only one left] Russian Demantoid Garnet Loose Stone (Oval Cut, Approx. 3 x 2mm) [Multiple Purchase Discounts Available]

[On sale September 5th at 10 PM] [Only one left] Russian Demantoid Garnet Loose Stone (Oval Cut, Approx. 3 x 2mm) [Multiple Purchase Discounts Available] Sale price¥9,800
[On sale at 10 PM on September 5th] [Limited to 6 stones] Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) [Multiple purchase discounts available]

[On sale at 10 PM on September 5th] [Limited to 6 stones] Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) [Multiple purchase discounts available] Sale price¥8,800
ロシア産ロシア産デマントイドガーネット（ホーステール認む） 0.100ctルース

[On Sale at 10 PM on September 6th] Russian Demantoid Garnet (Horsetail Recognized) 0.100ct Loose Sale price¥14,800
ロシア産デマントイドガーネット（ホーステール認む） 0.115ctルース

[On Sale at 10 PM on August 30th] Russian Demantoid Garnet (Horsetail) 0.115ct Loose Stone Sale price¥18,800
ロシア産デマントイドガーネット（ホーステール認む） 5.2mm/0.633ctルース

Russian demantoid garnet (horsetail recognized) 5.2mm/0.633ct loose Sale price¥198,000

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.