Skip to content

Pre-sale

Sort by

coming soon 【12/25 22時販売】インド産ムーンストーン 5.0mm/0.474ctルース(ローズカット)
coming soon 【12/25 22時販売】コロンビア産エメラルドキャッツアイ 0.959ctルース
coming soon 【12/25 22時販売】コロンビア産エメラルドキャッツアイ 1.121ctルース
coming soon 【12/25 22時販売】カナダ産アンモライト 17.043ctルース
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 14.193ctルース
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 10.683ctルース
coming soon 【12/25 22時販売】メキシコ産ファイアーアゲート 8.033ctルース
Sold out [Available at 10 PM on December 21st] Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%) [Multiple purchase discounts available]
Sold out [Available at 10 PM on December 20th] Limited Edition 10 Stones Rare Stone Gacha💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and More! Discounts Available for Multiple Purchases
Sold out [On Sale 12/21 10 PM] {Limited Remaining} Red Gemstone Gacha Including Pigeon Blood Ruby AIGS Worth ¥60,000 💎 Rubies and Hot Pink Sapphires {Multiple Purchase Discounts Available}
Sold out [On Sale 12/19 at 10 PM] [Only 3 left] Fancy or Fancy Intense pink diamond melee (1.0mm, round cut) [Multiple purchase discounts available]
Sold out [On sale at 10 PM on December 20th] [Limited to 11 stones] Diamond Gacha including VVS/4mm, VS/3mm, etc. worth ¥40,000 [Multiple purchase discounts available]
Sold out [/ On sale at 10pm] [Limited to 18 stones] Zircon Gacha - Win Koshu Precious Stones, Clover In, and Sakura Shapes [Multiple purchase discounts available]
Sold out オパール 0.595ctルース
Sold out Citrine 0.833ct loose stone
Sold out アメジスト 8.044ctルース
Sold out [12/19 10 PM Sale] [Limited to 10 Stones] Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More Bicolor Gacha 💎 Single Loose Stone [Multiple Purchase Discounts Available]
coming soon [12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.436ct Loose Stone
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.467ct Loose Stone
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
coming soon [12/14 22:00] Colombian Emerald Rough Stone 18.900ct (with Pyrite)
coming soon [12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone
Sold out [12/14 22:00 Sale] Chinese Cinnabar 1.062ct Loose Stone with Certificate of Authenticity
Sold out Brazilian alexandrite 0.112ct loose
Sold out バイカラータンザナイト 0.581ctルース
Sold out [12/22 22:00] Australian Black Opal 0.623ct Loose
coming soon [12561694] Australian black opal 1.837ct loose
coming soon [12561692] Australian Boulder Opal 2.326ct Loose
Sold out [12/19 22:00 Sale] Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out [12/19 22:00 Sale] Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose
Sold out [12/19 22:00 Sale] Brazilian Dumortierite in Quartz 1.995ct Loose Stone
Sold out [12/17 22:00] Brazilian Dumortierite in Quartz 1.924ct Loose Stone
Sold out チタン酸ストロンチウム 0.410ctルース
Sold out 【12/7 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン0.142ct・ジンバブエ産ユークレース・1.17ctのコバルトスピネル(鑑別書付:カラーシフト)・ベニトアイトなど《複数購入割引有》
Sold out 【12/7 22時販売】《限定15石》レアストーンガチャ💎ブラジル産パライバトルマリン0.200ct(CuO:0.7%,MnO:4.0%)・シンシャ(鑑別書付き1.487ct)・ターフェアイト0.241ct ほか《複数購入割引有》
Sold out [On Sale 12/6 at 10 PM] Diamond Gacha featuring a 0.072ct FANCY DEEP pink diamond, normally priced at ¥70,000. Also featuring VS-class ice blue diamonds and more. Discounts available for multiple purchases.
coming soon [12561445] Spinel 0.310ct Loose Stone
Sold out K18YGコロンビア産エメラルド0.062ct・ダイヤモンドリング
Sold out 【サンジェ氏】ブルージルコン 0.322ctルース
Sold out ロードライトガーネット 0.990ctルース
Sold out アマゾン産グリーンオパール 1.120ctルース
Sold out ミャンマー産トラピッチェルビー 0.179ct原石
Sold out 【12545153掲載】ミャンマー産トラピッチェルビー 0.160ct原石
coming soon スリランカ産クリソベリルキャッツアイ 1.340ctルース
Sold out オーストラリア産エメラルド 0.320ctルース

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.