Skip to content

Pre-sale

Sort by

Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone
Sold out モザンビーク産パライバトルマリン 1.581ctルース
Sold out ブラジル産パライバトルマリン 0.216ctルース
Sold out K18/Pt950グリーンアウイナイト0.162ct リング
Sold out オレゴンサンストーン 0.390ctルース
Sold out 《Limited 9 Stones》Blue Stone Gacha 💎 Brazilian Paraiba Tourmaline (CuO:2.2%.MnO:3.5%), Top Color Benitoite, Hauyne, Apatite 《Multi-Purchase Discount Available》
Sold out 《Limited to 10 Gems》DGL certified, pink sapphire gacha including a 0.155ct Padparadscha sapphire, plus a bonus sapphire such as a trillion cut! 《Multi-purchase discount available》
Sold out Guatemalan Jade (with certificate, 3-3.5mm) - 1 Stone Loose - Limited to 10 Stones - Multiple Purchase Discount Available
Sold out 《Limited to 12 Stones》Rare Stone Gacha 💎 Cinnabar from China, Paraiba Tourmaline from Mozambique, Grandidierite, etc.《Multiple Purchase Discount Available》
Sold out アンダリュサイト 0.440ctルース
Sold out フラワークォーツ 6.501ctルース
Sold out エチオピア産ハニカムオパール 3.566ctルース
Sold out ラベンダークォーツ(スコロライト) 1.761ctルース
Sold out クリストバライトインクォーツ 1.660ctルース
Sold out オパール 1.694ctルース
Sold out ブラジル産インペリアルトパーズ 0.413ctルース
Sold out メデューサクォーツ(パライバクォーツ) 1.855ctルース
Sold out オレゴンサンストーン 0.551ctルース
Sold out Mexican Fire Opal 0.290ct Loose (Faceted Cut)
Sold out パープルスピネル 0.520ctルース
Sold out レピドクロサイトインクォーツ 0.797ctルース
Sold out Sky blue topaz 5.595ct loose
Sold out 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) 0.922ctルース
Sold out 【甲州貴石切子plusthree】モルダバイト 1.511ctルース ワッペン付
Sold out Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》
Sold out Tanzanian Bicolor Tanzanite 0.419 ct Loose Stone
Sold out Synthetic Cobalt Spinel 0.466ct Loose
Sold out Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]
Sold out パキスタン産ラズライト(天藍石) 0.103ctルース 鑑別書
Sold out Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate
Sold out 【12562579掲載】ナミビア産ジェレメジェバイト 0.355ctルース
Sold out 【12562829掲載】コロンビア産パイライト付ユークレース 23.430ct原石
Sold out 【12562820掲載】ブラジル産バイカラートルマリン 7.445ctルース
Sold out Colombian mica in emerald 1.314ct loose
Sold out 【Sales start April 18th, 10 PM JST】《Limited to 5 pieces》Midway Atoll Coral Branch (Rough), 1 piece (March Birthstone, Coral, average 26ct)《Bulk purchase discount available》
Sold out Midway coral branch (raw wood) 1 piece (March birthstone, coral, average 26ct, Midway coral) 《Multiple purchase discount available》
Sold out [On Sale April 18th, 10 PM JST] [Limited 9 Stones] Tosa Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, Average 7ct) [Bulk Purchase Discount Available]
Sold out 《Limited to 10 Gems》Koshu Kiseki Kiriko plusthree "Akatsuki" Ametrine Gem Gacha《Bulk Purchase Discount Available》
Sold out 《Limited to 2 Stones》Indian Cavansite Crystal 1 Stone (average 7.2ct) 《Bulk Purchase Discount Available》
Sold out "Limited to 9" Deep sea coral loose stone (March birthstone, coral, 7mm) "Multiple purchase discount available"
Sold out Pt900 カンテラオパール 7.809ctct リング
Sold out 【32501879掲載】グレーダイヤモンド 0.096ctルース(VERY LIGHT GRAY, SI-1)
Sold out 【32501878掲載】グレーダイヤモンド 0.109ctルース(VERY LIGHT GRAY, SI-1)
Sold out カメレオンダイヤモンド 0.153ctルース(LIGHT GRAY GREEN, SI-1)
Sold out カメレオンダイヤモンド 0.128ctルース(FANCY LIGHT GRAY GREEN, SI-1)
Sold out カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)
Sold out 【12562810掲載】メキシコ産カンテラオパール 8.097ctルース
Sold out メキシコ産カンテラオパール 5.410ct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.