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 "

[Sale June 15th 10 PM JST] Afghanistan Hauyne 0.098ct Loose Stone with Gemstone Identification Report Sale price¥25,800

[Sale on June 13th at 10 PM] Ruby 0.820ct Loose Stone - Hogikyo Sale price¥39,800

Mexican Hyalite Opal 1.215ct Loose (Faceted Cut) Sale price¥8,800

[On sale May 30th at 10 PM] Afghan Hackmanite, 0.093ct loose stone Sale price¥16,800

[On sale May 31, 10 PM] Afghan Hackmanite 0.205ct Loose Stone Sale price¥36,800

[On Sale June 2nd, 10 PM JST] Mozambique Ruby 0.464ct Loose Gemstone with Identification Report Sale price¥29,800

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800

Afghanite from Afghanistan 0.617ct loose stone Sale price¥69,800

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》 Sale price¥1,500

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

Limited to 17 stones: 1 loose fluorite stone from Rogerley, England. Discounts available for multiple purchases. Sale price¥3,980

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 Sale price¥3,980

Limited to 8 stones: 1 unheated silky pink sapphire from Vietnam (including silky ruby) Discounts for multiple purchases available Sale price¥4,980

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

Limited to 8 stones: Mexican Hyalite Opal Loose (Large 4ct, Fluorescent even in sunlight) Multiple purchase discounts available Sale price¥4,980

[On Sale 5/6 10 PM] Limited to 10 Stones: Scapolite Gacha Featuring Koshu Kiseki Kiriko Plusthree "Akatsuki" (Normally ¥45,800) with a Chance to Win! [Multiple Purchase Discount Available] Sale price¥4,980

Limited quantity: 1 impregnated ruby loose (4mm, round cut, identification instructions included) Multiple purchase discounts available Sale price¥1,980

Set of two fluorite rough stones from Diana Maria and Lady Annabella, UK (multiple purchase discounts available) Sale price¥3,980

1.758 ct Ruby Loose Stone from Vietnam with Identification Report Sale price¥49,800

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

Mexican Hyalite Opal 2.592ct loose Sale price¥9,800

German Awinite 0.070ct loose stone Sale price¥29,800

German Awinite 0.056ct loose stone Sale price¥22,800

[On sale May 30th at 10 PM] [Colorfri] K18 Synthetic Ruby / Synthetic Spinel Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥98,000

[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report Sale price¥22,800

[Sales Start: May 3rd, 10 PM JST] [Colorflee] Pt900 Lab-Grown Ruby 1.61ct / Diamond 0.25ct Ring (Central Gem Lab Certified) Sale price¥98,000

[Sale on May 17th at 10 PM] [Colorful] K18 Ruby 0.33ct and Diamond Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥69,800

[Sale starts May 14th, 10 PM JST] [Colorfuri] Pt900 German Hauyne 0.065ct Pendant Top (Necklace Top) with Certificate Sale price¥39,800

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800

K18/Pt950 Afghanistan Green Apatite 0.162ct Ring Sale price¥158,000

Burmese ruby 3.72ct loose GIA/CGL Sale price¥298,000

Mexican Hyalite Opal 0.774ct Loose (Faceted Cut) Sale price¥8,800

Tanzanian Yellow Scapolite 1.780ct Loose Sale price¥8,800

Afghanite 0.447ct loose stone from Afghanistan, Japan-Germany Sale price¥5,980

18K Yellow Gold Ruby Ring (Pigeon Blood Color) Sale price¥128,000

Auinite 2.3mm/0.060ct loose Sale price¥6,980

Auinite 2.6mm/0.084ct loose Sale price¥8,800

Auinite 2.4mm/0.064ct loose Sale price¥8,800

Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS Sale price¥79,800

Mexican Hyalite Opal 7.5mm/1.221ct Loose (Faceted Cut) Sale price¥12,800

British Rogerley Fluorite 3.750 ct loose stone Sale price¥8,800

Brazilian Rainbow Scapolite 0.328ct Loose Stone Sale price¥9,800

German Auyinite 3.5mm/0.131ct Loose Stone Sale price¥29,800

German Apatite 0.048ct Loose Stone Sale price¥19,800

German Hauyne 2.2mm/0.035ct Loose Stone Sale price¥18,800

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.