colored stone loose

A list of colored stones and loose gemstones.

Pakistani Lazurite (Azurite) 0.048ct loose stone Sale price¥9,800

ブラジル産非加熱バイカラーパライバトルマリン 0.220ctルース(CuO:2.7%、MnO:3.2%) GIA

Brazilian unheated bicolor Paraiba tourmaline 0.220ct loose stone (CuO: 2.7%, MnO: 3.2%) GIA Sale price¥198,000

Brazilian Rubellite 1.027ct Loose Stone Sale price¥69,800

Paraiba tourmaline from Brazil 0.047ct loose Sale price¥29,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥39,800

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥39,800

Paraiba tourmaline from Brazil 0.052ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.051ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.048ct loose Sale price¥29,800

Paraiba tourmaline from Brazil 0.072ct loose Sale price¥32,800

ブラジル産パライバトルマリン 0.120ct《エイトリータ》ルース（CuO:2.0%、MnO:0.7%）

[On sale at 10pm on November 9th] Brazilian Paraiba Tourmaline 0.120ct "Eitrea" loose stone (CuO: 2.0%, MnO: 0.7%) Sale price¥128,000

ブラジル産パライバトルマリン 0.230ctルース GIA（CuO:0.9%、MnO:1.1%)

Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%) Sale price¥158,000

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.284ct Loose Stone JTL Sale price¥39,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.536ct Loose Stone JTL Catalog Sale price¥29,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.179ct Loose Stone JTL Grade Sale price¥15,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.342ct Loose Stone JTL Catalog Sale price¥15,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.707ct Loose Stone JTL Grade Sale price¥29,800

Bulgarian Green Sphalerite 0.403ct Loose Stone Sale price¥69,800

{8 sets remaining} Gemstone Encyclopedia Playing Cards + Gemstones (Loose) from the Gemstone Encyclopedia + Gemstone Goods Sale price¥10,000

Tanzanian Kornerupine 0.202ct loose stone Sale price¥18,800

Tanzanian Kornerupine 3.2mm/0.129ct Loose Stone Sale price¥6,980

Tanzanian Kornerupine 0.233ct loose stone Sale price¥14,800

Tanzanian Kornerupine 3.8mm/0.238ct loose stone from Yurakucho Marui 2024112 Sale price¥18,800

Limited to 8 stones: 1 cat-cut Mozambique aquamarine loose stone (March birthstone, 5.5mm) Multiple purchase discounts available Sale price¥6,980

Limited to 10 stones: 1 cat-cut Mozambique aquamarine loose stone (March birthstone, 6.0mm) Multiple purchase discounts available Sale price¥8,800

January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners} Sale price¥2,980

April birthstone Morganite rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

March birthstone, aquamarine rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

Limited to 6 stones: 1 synthetic moissanite loose stone (hexagonal cut, 5mm) Multiple purchase discounts available Sale price¥6,980

{3 stones remaining} Amber cat cut 1 stone loose (Amber, 8mm) {Multiple purchase discount available} Sale price¥4,980

Brazilian Paraiba Tourmaline 0.136ct loose stone (CuO: 1.8%, MnO: 2.0%) Sale price¥39,800

Brazilian Paraiba Tourmaline 0.143ct loose stone (CuO: 0.9%, MnO: 1.9%) Sale price¥25,800

Brazilian Paraiba Tourmaline 0.202ct loose stone (CuO: 0.6%, MnO: 0.1%) Sale price¥55,800

Brazilian unheated bicolor Paraiba tourmaline 0.178ct loose stone (CuO: 0.9%, MnO: 2.8%) Sale price¥298,000

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.242ct Loose Stone JTL Catalog Sale price¥39,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.233ct Loose Stone JTL Catalog Sale price¥45,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.214ct Loose Stone JTL Sale price¥32,800

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980

Elbaite tourmaline from Mozambique 1.138ct loose stone (CuO: 0.1%, Mn0: 1.6%) Sale price¥59,800

Elbaite tourmaline from Mozambique 2.964ct loose stone (CuO: 0.1%, Mn0: 4.4%) Sale price¥45,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥79,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 3.512ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 3.512ct Loose Sale price¥98,000

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥88,000

Namibian Jeremejevite 0.206ct loose stone Sale price¥55,800

Namibian Jeremejevite 0.158ct loose stone Sale price¥45,800

Namibian Jeremejevite 0.405ct loose stone Sale price¥128,000

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