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Sold out "Limited 5 Stones" Burmese Ice Jadeite (approx. 3.3-3.8mm) "Bulk Purchase Discount Available"

"Limited 5 Stones" Burmese Ice Jadeite (approx. 3.3-3.8mm) "Bulk Purchase Discount Available"
Sold out GGG（ガドリウムガリウムガーネット） 0.658ctルース

GGG (Gadolinium Gallium Garnet) 4.0mm/0.658ct Loose Stone
Sold out スリランカ産イエローサファイア 0.517ctルース

Sri Lankan Yellow Sapphire 0.517ct Loose Gemstone
Sold out "Limited to 9" Deep sea coral loose stone (March birthstone, coral, 7mm) "Multiple purchase discount available"

"Limited to 9" Deep sea coral loose stone (March birthstone, coral, 7mm) "Multiple purchase discount available"
Sold out カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)

Chameleon Diamond 3.1mm/0.118ct Loose Stone (LIGHT GRAYISH GREENISH YELLOW, VS-2)
Sold out ブラジル産インディゴライトトルマリン 0.105ctルース

Brazil Indicolite Tourmaline 0.105ct Loose Stone with Gemstone Report
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》
Sold out 《Limited to 1 set》 Benitote Gradient 6-Stone Set (2.25mm, including top quality) with Orange Benitoite (Peach Benito) 《Multiple Purchase Discount Available》

《Limited to 1 set》 Benitote Gradient 6-Stone Set (2.25mm, including top quality) with Orange Benitoite (Peach Benito) 《Multiple Purchase Discount Available》
Sold out 《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》

《Limited to 5 stones》Carving Gacha 💎 Green Quartz, Lemon Quartz, Blue Topaz 《Multiple Purchase Discount Available》
Sold out 《Limited to 6 sets》 Colombian Reverse Trapiche Emerald & Brazilian Emerald (Sugarloaf Cut) 2-Stone Set《Multiple purchase discount available》

《Limited to 6 sets》 Colombian Reverse Trapiche Emerald & Brazilian Emerald (Sugarloaf Cut) 2-Stone Set《Multiple purchase discount available》
Sold out Diamond rough (makeable) 0.353ct rough

Diamond rough (makeable) 0.353ct rough
Sold out Diamond rough (makeable) 0.279ct rough

Diamond rough (makeable) 0.279ct rough
Sold out Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]

Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)

Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.

Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.
Sold out Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available

Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available
Sold out ラベンダー翡翠（ヒスイ） 78.496ctルース 中宝

Lavender Jade (Jade) 78.496ct Loose Medium Treasure
Sold out 【猫カット】ブラジル産ゲーサイトインアメジスト 0.561ctルース

[Cat Cut] Brazilian Goethite Amethyst 0.561ct Loose Stone
Sold out サファリン 0.320ctルース

Sri Lankan saffron 0.320ct loose stone with certificate of authenticity
Sold out Limited to 15 stones: 1 loose Smithsonite stone (average 2 carats) Multiple purchase discounts available

Limited to 15 stones: 1 loose Smithsonite stone (average 2 carats) Multiple purchase discounts available
Sold out Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available

Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available
Sold out Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available

Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available
Sold out マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.352ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.352ct Loose Stone
Sold out アフガニスタン産ブルーサイト 1.424ctルース

【10/31 22時販売】アフガニスタン産ブルーサイト 1.424ctルース
Sold out バイカラータンザナイト 3.018ct原石

Tanzanian bicolor tanzanite 3.018ct rough and loose stone set of 2
Sold out インターナリーフローレスダイヤモンド 0.340ctルース(D, IF,マーキースカット) GIA

[Deadline: Sat, Oct 3, 10:00 AM: Lottery Sale ①_06] Internally Flawless Diamond 0.340ct Loose Stone (D, IF, Marquise Cut) GIA
Sold out パキスタン産ルビーインクォーツ 1.429ctルース

Pakistan Ruby in Quartz 1.429ct Loose Stone
Sold out YAG（イットリウムアルミニウムガーネット） 1.709ctルース

YAG (Yttrium Aluminum Garnet) 7.1mm/1.709ct loose stone
Sold out 非加熱ブラジル産パライバトルマリン 0.044ctルース（CuO:1.6%、MnO:2.0%）

Unheated Brazilian Paraiba Tourmaline 0.044ct loose stone (CuO: 1.6%, MnO: 2.0%)
Sold out ブラジル産ピンクトルマリン 0.628ctルース

Brazilian Pink Tourmaline 0.628ct Loose Stone
Sold out スリランカ・ウバ産ムーンストーン 0.566ctルース

[Item 12564594] Sri Lankan Uva Moonstone 0.566ct Loose Stone
Sold out アメリカ産オレンジベニトアイト 0.035ctルース

【10/30 22時販売】アメリカ産オレンジベニトアイト（ピーチベニトアイト） 0.035ctルース 鑑別書
Sold out ジンバブエ産ユークレース 0.025ctルース

【10/28 22時販売】ジンバブエ産ユークレース 0.025ctルース
coming soon スリランカ産ロッククリスタル 7.581ctルース

スリランカ産マターレークォーツ 7.581ctルース Sale price¥22,800
coming soon エチオピア産パライバトルマリン 0.158ctルース（CuO:2.618%、Mno:0.688%）

エチオピア産パライバトルマリン 0.158ctルース（CuO:2.618%、Mno:0.688%） Sale price¥0
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》

[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out [Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》

[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》
Sold out American benitoite 0.076ct loose

American benitoite 0.076ct loose
Sold out パキスタン産オイルインクォーツ 0.325ctルース

Pakistani oil-in quartz 0.325ct loose (facet cut, bubble moving type)
Sold out パキスタン産オイルインクォーツ 0.361ctルース

Pakistani oil-in quartz 0.361ct loose
Sold out #VALUE!

Brazilian ametrine 8.849ct loose
Sold out Benitoite 2.5mm/0.079ct loose

Benitoite 2.5mm/0.079ct loose
Sold out チベット産バイカラーアンデシン 1.818ctルース

Tibetan bicolor andesine 1.818ct loose
Sold out 【12546496掲載】ベトナム産非加熱シルキーピンクサファイア 0.161ctルース

Unheated silky pink sapphire from Vietnam 0.161ct loose
Sold out Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 6.7mm/1.488ct Loose

Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 6.7mm/1.488ct Loose
Sold out Grandidierite from Madagascar 0.228ct loose stone

Grandidierite from Madagascar 0.228ct loose stone
Sold out Afghan Kunzite 5.6mm/0.897ct Loose

Afghan Kunzite 5.6mm/0.897ct Loose

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.