opal

Opal is the birthstone for October. It is broadly divided into two types: "precious opal" which exhibits play-of-color effect, and "common opal" which does not. The impression changes greatly depending on whether there is a play-of-color effect or not, but the atmosphere also changes depending on the way the play-of-color appears and the pattern, and if you own one, you will want to collect many more, making it a collector's item.

Karatz GemMagazine
" opal "

[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases. Sale price¥4,980

[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available] Sale price¥3,980

【10/12 22時販売】オーストラリア産クリスタル＆ホワイトオパール１３石ハーフエタニティリングセット（2.0mm) Sale price¥79,800

[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] Sale price¥4,980

Australian boulder opal 0.874ct loose Sale price¥3,980

Australian boulder opal 1.156ct loose Sale price¥3,980

Australian boulder opal 1.173ct loose Sale price¥5,980

Australian boulder opal 0.982ct loose Sale price¥6,980

[10/11 22:00 Sale] Mexican Cantera Opal 14.690ct Loose Sale price¥12,800

[10/10 22:00 Sale] Australian Opal 0.374ct Loose Sale price¥6,980

[10/10 22:00 Sale] Mexican Cantera Opal 1.120ct Loose Sale price¥8,800

Australian boulder opal 1.868ct loose Sale price¥18,800

Australian boulder opal 1.675ct loose Sale price¥14,800

Australian boulder opal 28.880ct loose Sale price¥59,800

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥98,000

[On Sale at 10pm on October 1st] Australian Boulder Opal 9.120ct Loose Sale price¥98,000

UV opal from Hokkaido 12.259ct loose with patch Sale price¥6,980

【KEN氏】メキシコ産オパール 8mm/1.430ctルース - カラッツSTORE

Mexican Opal 8mm/1.430ct Loose Sale price¥25,800

Australian opal 14.837ct loose Sale price¥98,000

【KEN氏】メキシコ産ファイアオパール 1.580ctルース - カラッツSTORE

Mexican Fire Opal 1.580ct Loose Sale price¥25,800

【さくらインカット】メキシコ産オパール 9mm/1.532ctルース - カラッツSTORE

[Sale at 10 PM on September 15th] [Sakura In-Cut] Mexican Opal 9mm/1.532ct Loose Sale price¥45,800

1 green opal from Amazon《Discount available for multiple purchases》 Sale price¥2,980

【5/21 22時販売】【KEN氏】メキシコ産オパール1石（約3.5mm）《複数購入割引有》 - カラッツSTORE

1 Mexican opal (approx. 3.5mm) {Multiple purchase discounts available} Sale price¥3,980

Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available Sale price¥5,980

[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available] Sale price¥3,980

1 loose Australian opal (heart shape, 4 x 4mm)《Discount available for multiple purchases》 Sale price¥3,980

[Available at 10 PM on August 11th] Limited to 9 stones: 1 loose Mexican opal stone [Multiple purchase discounts available] Sale price¥1,980

Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available] Sale price¥2,980

Limited to 8 stones: 1 Mexican fire opal loose stone with unique color (up to 2.2ct) Multiple purchase discounts available Sale price¥3,980

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available) Sale price¥8,800

Australian white opal 2.092ct loose stone Sale price¥9,800

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980

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

Cantera opal 17.284ct loose Sale price¥29,800

Fire opal 1.360ct loose Sale price¥9,800

【NOBU氏】アマゾン産グリーンオパール《コラボ》6.8mmルース - カラッツSTORE

[Mr. NOBU] Green Opal from Amazon [Collaboration] 6.8mm loose Sale price¥6,980

[Cat cut] Amazon green opal 6.5mm/0.580ct loose Sale price¥6,980

Fire Opal 2 Stone Pair 4mm/0.336ct Loose Sale price¥3,980

Opal 6.560ct loose Sale price¥39,800

[Posted 12533051] Cantera Opal 8.970ct Loose Sale price¥12,800

Cantera Opal 5.750ct loose Sale price¥18,800

Opal 1.020ct loose Sale price¥29,800

[On Sale at 10 PM on August 17th] Mexican Cantera Opal 2.125ct Loose Sale price¥39,800

[On Sale at 10 PM on August 16th] Mexican Cantera Opal 5.882ct Loose Sale price¥39,800

[Available at 10 PM on August 13th] [Camellia Cut] Ethiopian Opal 5.083ct/14mm Loose Sale price¥69,800

[On Sale at 10 PM on August 20th] Mexican Fire Opal (Faceted) 0.167ct Loose Sale price¥8,800

[On Sale at 10 PM on August 24th] Mexican Fire Opal (Faceted) 0.207ct Loose Sale price¥12,800

[On Sale at 10 PM on August 20th] Mexican Fire Opal (Faceted) 0.515ct Loose Sale price¥12,800

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.