Birthstone list

[On sale at 10pm on 13/10] Brazilian Rubellite 3.022ct loose stone Sale price¥98,000

[On sale at 10pm on 14th October] 3.429ct loose bi-color tourmaline from Congo Sale price¥128,000

[On sale at 10pm on 14/10] Afghanistan Green Tourmaline 11.5mm/5.854ct Loose Sale price¥198,000

[On sale at 10pm on 14/10] 1.065ct loose pink tourmaline from Mozambique Sale price¥15,800

[On sale at 10pm on 14th October] 1.706ct loose rubellite from Mozambique Sale price¥39,800

[On sale at 10pm on 14th October] 1.315ct loose spessartine garnet from Madagascar Sale price¥18,800

[On sale at 10pm on 14/10] Andesine Labradorite (also known as Blue Moonstone) 1.096ct loose stone Sale price¥45,800

[On sale at 10pm on 14/10] Andesine Labradorite (also known as Blue Moonstone) 0.949ct loose stone Sale price¥45,800

[On sale at 10pm on 12/10] Kenyan Gold Sheen Sapphire 4mm/0.438ct Loose Sale price¥55,800

[On sale at 10pm on 14th October] Madagascar Aquamarine 1.056ct Loose Sale price¥19,800

[On sale 11/1 at 22:00] Diamond (cabochon cut) 0.183ct loose Sale price¥24,800

[On sale 11/1 at 22:00] Diamond (cabochon cut) 0.366ct loose Sale price¥59,800

[On sale 11/1 22:00] Yellow Diamond (Sugarloaf Cut) 0.348ct Loose Sale price¥39,800

[On sale 11/1 at 22:00] Diamond (cabochon cut) 0.173ct loose Sale price¥19,800

Sold out

[On sale from 11/1 at 22:00] Diamond (cabochon cut) 0.172ct loose

Topaz 1.666ct loose stone Sale price¥12,800

[On sale 11/9 at 22:00] Tanzanian rhodolite garnet 10.608ct loose stone Sale price¥98,000

[On sale at 10pm on 15th October] 1.779ct Spessartine Garnet Loose Stone from Madagascar Sale price¥29,800

[On sale at 10pm on 15/10] Mozambique aquamarine 3.301ct loose stone Sale price¥59,800

[12555234] Brazilian Paraiba Tourmaline in Quartz 2.622ct Loose Stone Sale price¥49,800

[On sale at 10pm on November 9th] Brazilian Paraiba Tourmaline in Quartz 2.674ct loose stone Sale price¥54,800

[12555232] Brazilian Paraiba Tourmaline in Quartz 2.827ct Loose Stone Sale price¥49,800

[12555231] Brazilian Paraiba Tourmaline in Quartz 3.049ct Loose Stone Sale price¥49,800

[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

[On sale at 10pm on November 9th] Brazilian Paraiba Tourmaline in Quartz 1.146ct loose stone Sale price¥29,800

[12555217] Brazilian Paraiba Tourmaline in Quartz 1.287ct Loose Stone Sale price¥29,800

[On sale at 10pm on 10/16] Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.314ct loose stone Sale price¥29,800

[On sale at 10pm on 10/17] Brazilian Limonite in Topaz 3.399ct loose stone Sale price¥8,800

[On sale at 10pm on 10/17] Colombian Trapiche Emerald 0.629ct loose stone Sale price¥34,800

[On sale at 10pm on 10/17] Kenyan Gold Sheen Sapphire 3.7mm/0.317ct Loose Sale price¥35,800

[On sale at 10pm on 10/17] Kenyan Gold Sheen Sapphire 3.6mm/0.302ct Loose Sale price¥35,800

Kenyan Gold Sheen Sapphire 0.273ct Loose Sale price¥22,800

Kenyan Gold Sheen Sapphire 0.264ct Loose Sale price¥22,800

Kenyan Gold Sheen Sapphire 0.305ct Loose Sale price¥12,800

[On sale at 10pm on November 9th] Kenyan Gold Sheen Sapphire 0.308ct Loose Sale price¥12,800

Pt900/K18ブラックオパールキャッツアイ0.736 ペンダント（ネックレス）

[On sale at 10pm on 13/10] Pt900/K18 Australian black opal cat's eye 0.736ct diamond pendant (necklace) by Chuho Sale price¥258,000

【カメリアカット】カラーシフトアメジスト《コラボ》 18mm/21.330ctルースワッペン

[Camellia Cut] Brazilian Color Shift Amethyst [Collaboration] 18mm/21.330ct Loose Patch Sale price¥69,800

Tanzanian Mandarin Garnet 0.383ct Loose Stone Sale price¥19,800

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

Paraiba tourmaline from Brazil 0.098ct loose Sale price¥19,800

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） 1.416ctルース

Rainbow garnet (andradite garnet) 1.416ct loose from Tenkawa Village, Nara Prefecture Sale price¥8,800

Elbaite tourmaline from Mozambique 2.082ct loose stone (CuO: 0.1%, MnO: 1.4%) Sale price¥69,800

Colombian Trapiche Emerald 1.494ct Loose Sale price¥69,800

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%) Sale price¥59,800

非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.4%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.4%, MnO: 2.3%) Sale price¥69,800

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.

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