Round Cut

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ダイヤモンド 3.8mm/0.200ctルース(D, VVS-1, Excellent)

[On sale from 10/25 at 10pm] Diamond 3.8mm/0.200ct loose stone (D, VVS-1, Excellent)

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[On sale at 10pm on 10/24] Madagascar Montebrasite 5mm/0.470ct loose stone

[On sale from 10/31 at 22:00] Myanmar purple spinel 0.434ct loose stone Sale price¥12,800

インド産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.650ctルース

[On sale at 10pm on 10/22] Indian Andesine Labradorite (also known as Rainbow Moonstone) 6mm/0.650ct loose stone Sale price¥15,800

ブラジル産パライバトルマリン 0.167ctルース（CuO:1.1%、MnO:3.6%）

[On sale from 10/22 at 10pm] Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%) Sale price¥69,800

[On sale from 10/21 at 10pm] American Peridot 7.2mm/1.530ct Loose Sale price¥14,800

[On sale from 10/21 at 10pm] [Koshu Precious Stone Cut] Brazilian Rutile Quartz (Rutiled Quartz) 2.270ct Loose Patch Sale price¥29,800

ロシア産デマントイドガーネット（ホーステール認む） 3mm/0.165ctルース

[On sale at 10pm on 10/20] Russian Demantoid Garnet (Horsetail certified) 3mm/0.165ct loose stone Sale price¥45,800

[On sale at 10pm on 10/20] Colombian emerald 3.1mm/0.097ct loose stone Sale price¥22,800

[On sale at 10pm on 10/19] Oregon Sunstone from the USA 11mm/4.05ct loose stone (vortex cut) Sale price¥39,800

マダガスカル産ホワイトトパーズ（ニードルイントパーズ） 7.8mm/2.336ctルース

[On sale 11/13 at 22:00] Madagascar White Topaz (Needle-in Topaz) 7.8mm/2.336ct Loose Sale price¥5,980

[On sale at 10pm on 10/19] Sri Lankan blue sapphire 3.9mm/0.265ct loose stone Sale price¥7,980

[On sale at 10pm on 10/20] Sri Lankan blue sapphire 3.8mm/0.279ct loose stone Sale price¥8,800

[On sale at 10pm on 10/20] Sri Lankan blue sapphire 4.5mm/0.401ct loose stone Sale price¥12,800

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[On sale at 10pm on 10/20] Sri Lankan blue sapphire 4.5mm/0.408ct loose stone

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[On sale from 10/20 at 10pm] Myanmar red spinel 3.3mm/0.165ct loose stone

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.259ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 4mm/0.259ct Loose Stone Sale price¥5,980

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アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.232ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 4mm/0.232ct Loose Stone

Madagascar Oregon Sunstone 4mm/0.239ct Loose Stone Sale price¥7,980

[On sale at 10pm on 14th October] Oregon Sunstone from the US 4.0mm/0.206ct loose stone Sale price¥8,800

[On sale at 10pm on 14th October] Oregon Sunstone from the US 4.0mm/0.204ct loose stone Sale price¥6,980

アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.294ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 4mm/0.294ct Loose Stone Sale price¥6,980

[On sale at 10/14 22:00] Oregon Sunstone from the United States 0.372ct loose stone Sale price¥12,800

[On sale at 10pm on 12/10] Oregon Sunstone from the United States 4.9mm/0.417ct loose stone Sale price¥22,800

[On sale at 10pm on 10/16] Oregon Sunstone from the United States 5.0mm/0.460ct loose stone Sale price¥19,800

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[On sale at 10pm on 14/10] Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.736ct loose stone

Topaz 1.666ct loose stone Sale price¥12,800

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[12555230] Brazilian Paraiba Tourmaline in Quartz 0.546ct Loose Stone

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[12555229] Brazilian Paraiba Tourmaline in Quartz 0.533ct Loose Stone

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[On sale at 10pm on November 9th] Brazilian Paraiba Tourmaline in Quartz 0.524ct loose stone

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[On sale at 10pm on 10/16] Brazilian Paraiba Tourmaline in Quartz 6.1mm/0.492ct loose stone

[On sale at 10pm on 10/16] Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct loose stone Sale price¥22,800

[On sale at 10pm on 10/23] Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.330ct loose stone Sale price¥15,800

[On sale at 10pm on 10/24] Brazilian Paraiba Tourmaline in Quartz 3.6mm/0.162ct loose stone Sale price¥14,800

[12555221] Brazilian Paraiba Tourmaline in Quartz 0.143ct Loose Stone Sale price¥12,800

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Grandidierite from Madagascar 2.4mm/0.058ct loose stone

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German Awinite 2.8mm/0.071ct loose stone

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German Awinite 2.4mm/0.044ct loose stone

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ベトナム産コバルトスピネル（カラーシフト） 1.3mm/0.012ctルース日独鑑

Vietnam Cobalt Spinel (Color Shift) 1.3mm/0.012ct Loose Stone, Japan-Germany Exchange

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Vietnam Cobalt Spinel (Color Shift) 1.2mm/0.010ct Loose Stone, Japan-Germany Exchange

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ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.610ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 2mm/0.061ct loose

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[On sale 10/7 at 22:00] Tanzanian Kornerupine 3.0mm/0.111ct loose stone

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American Zincite 3.8mm/0.407ct Loose Stone by Nikkei

YAG (Yttrium Aluminum Garnet) 7.1mm/1.709ct loose stone Sale price¥12,800

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Silky Diamond 3.1mm/0.128ct 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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments