Login
誕生石一覧

Birthstone list

Sort by
《新宿ポップアップ開催記念》《残り僅か》 通常3万円相当含むカラーダイヤモンドセット（ピンク・アイスブルー・グリーンダイヤなど9石以上含む）《複数購入割引有》　

《新宿ポップアップ開催記念》《残り僅か》 通常3万円相当含むカラーダイヤモンドセット（ピンク・アイスブルー・グリーンダイヤなど9石以上含む）《複数購入割引有》　 Sale price¥5,980
[On sale May 3, 10 PM JST] 《Almost Sold Out》Garnet Gacha (Round Cut, 2.5mm) Cut by American Polishing Artisan KEN 《Multiple Purchase Discount Available》

[On sale May 3, 10 PM JST] 《Almost Sold Out》Garnet Gacha (Round Cut, 2.5mm) Cut by American Polishing Artisan KEN 《Multiple Purchase Discount Available》 Sale price¥1,580
[On sale May 3rd at 10 PM] Limited to 9 stones! Color-shifting amethyst gacha, including a 3.49ct konpeito cut by Makoto Nakano (normally 22,800 yen) and a Sanje-cut stone. (Multiple purchase discount available)

[On sale May 3rd at 10 PM] Limited to 9 stones! Color-shifting amethyst gacha, including a 3.49ct konpeito cut by Makoto Nakano (normally 22,800 yen) and a Sanje-cut stone. (Multiple purchase discount available) Sale price¥2,980
[On sale May 4th at 10 PM] Limited to 12 Stones - Loose Sri Lankan Star Sapphire (1 Stone) - Multiple Purchase Discount Available

[On sale May 4th at 10 PM] Limited to 12 Stones - Loose Sri Lankan Star Sapphire (1 Stone) - Multiple Purchase Discount Available Sale price¥4,980
[On sale May 2nd, 10 PM JST] "Only 2 Left" Pink Diamond Gacha, including FANCY LIGHT PURPLISH PINK, usually priced at 79,800 yen (multiple purchase discount available)

[On sale May 2nd, 10 PM JST] "Only 2 Left" Pink Diamond Gacha, including FANCY LIGHT PURPLISH PINK, usually priced at 79,800 yen (multiple purchase discount available) Sale price¥6,980
【5/4 22時販売】《残り僅か》通常79,800円のブラジル産パーティカラーパライバトルマリン(CuO:1.7%,MnO:2.9%)・バイカラーサファイア・バイカラートルマリン・特殊カットのバイカラーフローライト含むバイカラーガチャ《複数購入割引有》

【5/4 22時販売】《残り僅か》通常79,800円のブラジル産パーティカラーパライバトルマリン(CuO:1.7%,MnO:2.9%)・バイカラーサファイア・バイカラートルマリン・特殊カットのバイカラーフローライト含むバイカラーガチャ《複数購入割引有》 Sale price¥6,980
[On Sale April 25th at 10 PM] Limited to 12 Stones - Rare Stone Gacha 💎 Including Chinese Cinnabar, Mozambique Paraiba Tourmaline, Grandidierite, and more! (Multiple Purchase Discount Available)

[On Sale April 25th at 10 PM] Limited to 12 Stones - Rare Stone Gacha 💎 Including Chinese Cinnabar, Mozambique Paraiba Tourmaline, Grandidierite, and more! (Multiple Purchase Discount Available) Sale price¥4,980
[Sale starts May 2nd, 10 PM JST] 《Limited to 9 Stones》Rare Round Cabochon Cut Sri Lankan Star Sapphire (Approx. 5.0mm) 《Multi-item Discount Available》

[Sale starts May 2nd, 10 PM JST] 《Limited to 9 Stones》Rare Round Cabochon Cut Sri Lankan Star Sapphire (Approx. 5.0mm) 《Multi-item Discount Available》 Sale price¥9,800
[Sale on May 4 at 10 PM JST] 12 Limited Pieces: Topaz Gacha (including Imperial Topaz) to win a Koshu Kiseki Kiriko plusthree "Akatsuki" (usually 35,800 yen) - Multiple Purchase Discount Available

[Sale on May 4 at 10 PM JST] 12 Limited Pieces: Topaz Gacha (including Imperial Topaz) to win a Koshu Kiseki Kiriko plusthree "Akatsuki" (usually 35,800 yen) - Multiple Purchase Discount Available Sale price¥4,980
[Sale at 10 PM on May 6th] Limited to 9 stones: Untreated Bicolor or Sky Blue Topaz Single Stone Gacha (Brazilian) [Multiple Purchase Discount Available]

[Sale at 10 PM on May 6th] Limited to 9 stones: Untreated Bicolor or Sky Blue Topaz Single Stone Gacha (Brazilian) [Multiple Purchase Discount Available] Sale price¥6,980
[On sale May 4th at 10 PM] "Limited to 11 Gems" Rouge Cut & Heart Shape Gemstone Gacha for ¥18,800! 💎 Almandine Garnet, Pink Tourmaline, Scolecite, Sapphire. "Multiple Purchase Discount Available"

[On sale May 4th at 10 PM] "Limited to 11 Gems" Rouge Cut & Heart Shape Gemstone Gacha for ¥18,800! 💎 Almandine Garnet, Pink Tourmaline, Scolecite, Sapphire. "Multiple Purchase Discount Available" Sale price¥4,980
【5/16 22時販売】《限定10石》猫カットガチャ💎トルマリン、オパール、カルセドニーなど（おまけでミニミニ猫カット付き）《複数購入割引有》

【5/16 22時販売】《限定10石》猫カットガチャ💎トルマリン、オパール、カルセドニーなど（おまけでミニミニ猫カット付き）《複数購入割引有》 Sale price¥4,980
GGG（ガドリウムガリウムガーネット） 0.658ctルース

【5/13 22時販売】GGG（ガドリウムガリウムガーネット） 4.0mm/0.658ctルース Sale price¥8,800
coming soon コロンビア産トラピッチェエメラルド 0.611ct原石

Colombian Trapiche emerald 0.611ct rough stone Sale price¥59,800
coming soon タンザニア産クロムトルマリン 0.522ctルース

Tanzanian Chrome Tourmaline 0.522ct Loose Stone Sale price¥3,980
【On sale April 23rd at 10 PM】Sri Lankan yellow sapphire 0.308ct loose stone

【On sale April 23rd at 10 PM】Sri Lankan yellow sapphire 0.308ct loose stone Sale price¥13,800
[On sale April 22nd at 10 PM] Tanzanian Rhodolite Garnet 5.9mm/1.084ct Loose Gemstone

[On sale April 22nd at 10 PM] Tanzanian Rhodolite Garnet 5.9mm/1.084ct Loose Gemstone Sale price¥12,800
[Sale on April 22 at 10 PM JST] GGG (Gadolinium Gallium Garnet) 3.046ct Loose Stone

[Sale on April 22 at 10 PM JST] GGG (Gadolinium Gallium Garnet) 3.046ct Loose Stone Sale price¥18,800
【12561173掲載】メキシコ産ファイアオパール（ファセットカット） 0.645ctルース

【Sales start: April 23, 10 PM JST】Mexican Fire Opal (faceted) 0.645ct Loose Stone Sale price¥18,800
【Sales start: April 20th, 10 PM JST】Tanzanian Bicolor Tanzanite 0.419ct Loose Gemstone

【Sales start: April 20th, 10 PM JST】Tanzanian Bicolor Tanzanite 0.419ct Loose Gemstone Sale price¥14,800
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） 1.533ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.533ct loose Sale price¥6,980
Sky blue topaz 5.595ct loose

Sky blue topaz 5.595ct loose Sale price¥18,800
Mexican Hyalite Opal 0.774ct Loose (Faceted Cut)

Mexican Hyalite Opal 0.774ct Loose (Faceted Cut) Sale price¥8,800
ピンクトルマリン 1.575ctルース

Pink tourmaline 1.575ct loose Sale price¥12,800
ピンクトルマリン 0.632ctルース

Pink tourmaline 0.632ct loose Sale price¥9,800
グリーントルマリン 0.559ctルース

Green tourmaline 0.559ct loose Sale price¥6,980
イエロートルマリン 0.277ctルース

Yellow tourmaline 0.277ct loose Sale price¥6,980
Mexican Fire Opal 0.290ct Loose (Faceted Cut)

Mexican Fire Opal 0.290ct Loose (Faceted Cut) Sale price¥6,980
ブラジル産インペリアルトパーズ 0.402ctルース

Brazilian Imperial Topaz 0.402ct Loose Stone Sale price¥9,800
ブラジル産インペリアルトパーズ 0.413ctルース

Brazilian Imperial Topaz 0.413ct Loose Stone Sale price¥9,800
オパール 1.694ctルース

Ethiopian Opal 1.694ct Loose Sale price¥7,980
オパール 2.131ctルース

Ethiopian Opal 2.131ct Loose Sale price¥9,800
エチオピア産ハニカムオパール 3.566ctルース

Ethiopian honeycomb opal 3.566ct loose stone Sale price¥46,800
コロンビア産エメラルド 0.345ctルース

Colombian emerald 0.345ct loose stone (silky type) Sale price¥15,800
ダイヤモンド 0.042ctルース

Diamond 0.042ct loose (VS class equivalent, emerald cut) Sale price¥6,980
イエローダイヤモンド 0.071ctルース(FANCY INTENSE ORANGEY YELLOW, SI2)

Fancy intense orangey yellow diamond 0.071ct loose stone (FANCY INTENSE ORANGEY YELLOW, SI2) Sale price¥22,800
ベトナム産非加熱シルキーピンクサファイア 0.580ctルース

Vietnam unheated silky pink sapphire 0.580ct loose stone Sale price¥12,800
Sapphire 0.461ct loose stone

Sapphire 0.461ct loose stone Sale price¥12,800
イエローサファイア 0.229ctルース

Yellow sapphire 0.229ct loose stone Sale price¥8,800
スリランカ産イルメナイトインスターサファイア 3.426ctルース

Sri Lankan Ilmenite in Star Sapphire 3.426ct loose stone (Ratnapura) Sale price¥49,800
【12562713掲載】ビルマ産ルビー 3.720ctルース

[On sale April 26 at 10 PM JST] 3.72ct Loose Burmese Ruby, with GIA and CGL certificates Sale price¥298,000
Benitoite 0.272ct loose stone (emerald cut)

Benitoite 0.272ct loose stone (emerald cut) Sale price¥248,000
モザンビーク産エルバイトトルマリン 1.574ctルース（CuO:0.1%,Mn0:3.1％）

Elbaite tourmaline from Mozambique 1.574ct loose stone (CuO: 0.1%, Mn0: 3.1%) Sale price¥55,800
ブラジル産パライバトルマリン 0.216ctルース

Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%) Sale price¥59,800
モザンビーク産エルバイトトルマリン 1.456ctルース（CuO:0.1%,MnO:0.4%）

Elbaite tourmaline from Mozambique 1.456ct loose stone (CuO: 0.1%, MnO: 0.4%) Sale price¥45,800
[On sale April 29, 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.186ct Loose Stone

[On sale April 29, 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.186ct Loose Stone Sale price¥18,800
[On Sale April 29th, 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.188ct Loose Stone

[On Sale April 29th, 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.188ct Loose Stone Sale price¥18,800
[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone

[On sale May 1st at 10 PM JST] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone Sale price¥22,800

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.