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fluorescent gemstones

There are some gemstones that emit a neon color when exposed to ultraviolet light. It is thought that the fluorescent substances contained in these materials emit light in response to ultraviolet light. When illuminated with black lights in a darkened room, the neon glow is truly a mystical world. There are many fluorescent gemstones, and they come in a variety of colors. From famous stones that everyone knows to rare rare stones. I think it's fun to collect various things and compare them.

Karatz GemMagazine
" Fluorescent gemstone "

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メキシコ産ハイアライトオパール 1.420ctルース

【11/2 22時販売】メキシコ産ハイアライトオパール 1.420ctルース Sale price¥18,800
メキシコ産ハイアライトオパール 0.743ctルース

[11/2 22:00] Mexican Hyalite Opal 0.743ct Loose Sale price¥12,800
Unheated ruby ​​0.430ct loose

Unheated ruby ​​0.430ct loose Sale price¥98,000
ドイツ産アウイナイト 0.063ctルース

[10/31 22:00 Sale] German Auchenite 0.063ct Loose Stone Sale price¥29,800
ドイツ産アウイナイト 0.073ctルース

[10/31 22:00 Sale] German Auchenite 0.073ct Loose Stone Sale price¥32,800
【サンジェ氏】ハックマナイト 0.520ctルース

Hackmanite 0.520ct loose stone Sale price¥18,800
[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]

[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available] Sale price¥3,980
ピジョンブラッドルビー 0.320ctルース AIGS

[10/12 22:00 Sale] Pigeon Blood Ruby 0.320ct Loose Stone AIGS Sale price¥48,800
ピジョンブラッドルビー 0.290ctルース

[On Sale at 10 PM on October 17th] Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800
グリーンランド産ルビー 0.220ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.220ct Loose Stone with Certificate Sale price¥39,800
グリーンランド産ルビー 0.210ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate Sale price¥45,800
グリーンランド産ルビー 0.134ctルース

[On Sale at 10 PM on October 19th] Greenland Ruby 3.0mm/0.134ct Loose Stone with Certificate Sale price¥25,800
ドイツ産アウイナイト 0.095ctルース

[10/19 22:00 Sale] German Auchenite 0.095ct Loose Stone Sale price¥39,800
ドイツ産アウイナイト 0.085ctルース

[10/19 22:00 Sale] German Auchenite 0.085ct Loose Stone Sale price¥45,800
ドイツ産アウイナイト 0.083ctルース

[On sale from 10/21 at 10pm] German Auchenite 0.083ct Loose Stone Sale price¥45,800
Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set)

Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set) Sale price¥2,980
宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（初心者向け：フローライト・アパタイト2石セット）

Let's try gem polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite/apatite 2 stone set) Sale price¥2,980
[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980
Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: Inca Rose/Fluorite 2 stone set)

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: Inca Rose/Fluorite 2 stone set) Sale price¥2,980
[Available at 10 PM on August 11th] Limited to 10 stones: Pakistani Oil-in-Quartz (Moving Bubbles) - Single Loose Stone (Multiple Purchase Discounts Available)

[Available at 10 PM on August 11th] Limited to 10 stones: Pakistani Oil-in-Quartz (Moving Bubbles) - Single Loose Stone (Multiple Purchase Discounts Available) Sale price¥2,980
1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280
ブラジル産カラーチェンジフローライト1石ルース（6mm,ラウンドカット）《複数購入割引有》

Color change fluorite from Brazil 1 stone loose (6mm, round cut)《Multiple purchase discount available》 Sale price¥2,580
《限定17石》イギリス・ロジェリー産フローライト1石ルース《複数購入割引有》

Limited to 17 stones: 1 loose fluorite stone from Rogerley, England. Discounts available for multiple purchases. Sale price¥3,980
Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available

Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available Sale price¥4,980
Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available

Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available Sale price¥4,980
Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases.

Limited to 17 stones: 1 loose Afghanite stone from Afghanistan. Discounts available for multiple purchases. Sale price¥2,980
Chinese color change fluorite 1 stone loose (7mm, round cut) {Multiple purchase discount available}

Chinese color change fluorite 1 stone loose (7mm, round cut) {Multiple purchase discount available} Sale price¥2,580
Chinese color change fluorite 1 stone loose (6mm, round cut) {Multiple purchase discount available}

Chinese color change fluorite 1 stone loose (6mm, round cut) {Multiple purchase discount available} Sale price¥1,980
Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available

Limited to 18 stones: Mozambique ruby ​​(princess cut, 2.3-2.5mm) Multiple purchase discounts available Sale price¥3,980
Afghanite 1 stone loose from Afghanistan《Discount available for multiple purchases》

Afghanite 1 stone loose from Afghanistan《Discount available for multiple purchases》 Sale price¥2,980
[2 stones remaining] 1 Tanzanian bicolor mint garnet loose stone (UV type) [Multiple purchase discount available]

[2 stones remaining] 1 Tanzanian bicolor mint garnet loose stone (UV type) [Multiple purchase discount available] Sale price¥3,980
Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available] Sale price¥2,980
ジェムガチャ💎 アフガナイト1石 ルース（平均0.14ct）《複数購入割引有》

Gem Gacha💎 Afghanite 1 stone loose (average 0.14ct) {Multiple purchase discount available} Sale price¥9,800
Set of two fluorite rough stones from Diana Maria and Lady Annabella, UK (multiple purchase discounts available)

Set of two fluorite rough stones from Diana Maria and Lady Annabella, UK (multiple purchase discounts available) Sale price¥3,980
《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》

《Limited to 8 stones》 [Mr. Sanjay] Hackmanite or Sodalite 1 stone loose (maximum 3.63 ct)《Multiple purchase discount available》 Sale price¥6,980
Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available

Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available Sale price¥3,980
Mexican Hyalite Opal 2.592ct loose

Mexican Hyalite Opal 2.592ct loose Sale price¥9,800
[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available]

[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available] Sale price¥4,980
UVタイプミントガーネット 0.521ctルース

UV type mint garnet 0.521ct loose Sale price¥3,980
ブラジル産レインボースキャポライト 0.516ctルース

Brazilian rainbow scapolite 6mm/0.516ct loose Sale price¥2,980
アフガニスタン産ハックマナイト 0.134ctルース

[On Sale at 10pm on October 8th] Afghanistan Hackmanite 0.134ct Loose Stone Sale price¥6,980
アフガニスタン産ハックマナイト 0.121ctルース

[On Sale at 10pm on October 8th] Afghanistan Hackmanite 0.121ct Loose Stone Sale price¥6,980
パキスタン産オイルインクォーツ 0.353ctルース

[On Sale at 10 PM on October 8th] Pakistani Oil-in-Quartz 0.353ct Loose Stone (Faceted) Sale price¥8,800
アウイナイト 0.074ctルース

Hauinite 0.074ct loose Sale price¥19,800
ハックマナイト 0.115ctルース

[On Sale at 10 PM on September 30th] Afghanistan Hackmanite 0.115ct Loose Stone Sale price¥22,800
ハックマナイト 0.091ctルース

[On Sale at 10 PM on September 30th] Afghanistan Hackmanite 0.091ct Loose Stone Sale price¥18,800
ドイツ産アウイナイト 0.090ctルース

[10/3 22:00 Sale] German Auchenite 0.090ct Loose Stone Sale price¥39,800
ドイツ産アウイナイト 0.097ctルース

[On sale at 10pm on September 20th] German Auchenite 0.097ct Loose Stone Sale price¥39,800

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.

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.