Birthstone list

Nepalese Kyanite 1 stone loose (Royal Blue color, 4 x 6mm, oval cut) {Multiple purchase discount available} Sale price¥3,980

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

[Dandelion cut] Pyrope almandine garnet 9.0mm/3.566ct loose stone Sale price¥35,800

Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available Sale price¥4,980

Tanzanite rough and loose stone set of 2 (average 3ct, cushion cut) from Tanzania {Multiple purchase discounts available} Sale price¥6,980

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

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 1.911ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.911ct loose stone Sale price¥39,800

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

Limited to 6 stones: Aquamarine + Iolite loose stone set of 2 (March birthstone) Multiple purchase discounts available Sale price¥2,980

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

Sri Lankan star sapphire 1.487ct loose Sale price¥8,800

Aventurine Aquamarine Cat's Eye 1.567ct Loose Sale price¥4,980

Colombian pyrite in emerald 4.592ct loose Sale price¥110,000

Green sapphire 0.518ct loose (teal green) Sale price¥8,800

Color change sapphire 0.946ct loose Sale price¥29,800

Paraiba tourmaline from Mozambique 0.243ct loose Sale price¥15,800

Unheated silky pink sapphire from Vietnam 0.426ct loose Sale price¥9,800

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） 2.483ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 2.483ct loose Sale price¥15,800

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） 1.163ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.163ct loose Sale price¥9,800

Montana Sapphire 3mm/0.155ct loose Sale price¥18,800

ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 2.5mm/0.141ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 2.5mm/0.141ct loose Sale price¥12,800

ブラジル産パーティカラーパライバトルマリン 0.149ctルース（CuO:1.4%、MnO:2.8%）

Particolor Paraiba tourmaline from Brazil 0.149ct loose (CuO:1.4%, MnO:2.8%) Sale price¥59,800

Colombian trapiche emerald (reverse trapiche) 0.152ct loose Sale price¥12,800

Colombian trapiche emerald (reverse trapiche) 0.099ct loose Sale price¥8,800

Colombian trapiche emerald (reverse trapiche) 0.074ct loose Sale price¥8,800

Colombian trapiche emerald (reverse trapiche) 0.108ct loose Sale price¥9,800

Colombian trapiche emerald (reverse trapiche) 0.084ct loose Sale price¥8,800

Colombian trapiche emerald (reverse trapiche) 0.144ct loose Sale price¥15,800

[On Sale 11/29 10pm] Greenland Ruby 0.253ct Loose Stone with Certificate Sale price¥49,800

[On Sale 11/29 10pm] Greenland Ruby 0.266ct Loose Stone with Certificate Sale price¥22,800

[12/2 22:00] Greenland Sapphire 0.133ct Loose Stone with Certificate Sale price¥14,800

[11/29 22:00] Tanzanian Almandine Garnet 2.697ct Loose Stone Sale price¥18,800

[11/29 22:00 Sale] Tanzanian Almandine Garnet 1.282ct Loose Stone Sale price¥13,800

[12/2 22:00] Tanzanian Almandine Garnet 1.164ct Loose Stone Sale price¥12,800

[12/2 22:00] Tanzanian Almandine Garnet 0.930ct Loose Stone Sale price¥9,800

[11/26 22:00] Tanzanian Almandine Garnet 0.902ct Loose Stone Sale price¥12,800

[11/29 22:00 Sale] Tanzanian Almandine Garnet 0.750ct Loose Stone Sale price¥9,800

[11/26 22:00] Tanzanian Almandine Garnet 0.993ct Loose Stone Sale price¥12,800

[12/15 22:00] Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone Sale price¥12,800

[On Sale 11/26 10pm] Tanzanian Bicolor Sapphire 0.380ct Loose (Teal) Sale price¥18,800

Sri Lankan Purple Sapphire 0.393ct Loose Stone with Certificate of Authenticity Sale price¥22,800

[On Sale 11/26 10pm] Brazilian Bicolor Tourmaline 4.497ct Loose Stone Sale price¥69,800

[On Sale 11/18 10pm] Brazilian Green Tourmaline 5.0mm/0.401ct Loose Stone (Rose Cut) Sale price¥9,800

Kenyan gold sheen sapphire 2.3mm/0.083ct loose Sale price¥8,800

[11/18 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 3.8mm/0.249ct Loose Stone Sale price¥39,800

Sapphire from Madagascar 4.5mm/0.414ct loose Sale price¥12,800

Sapphire from Madagascar 4.3mm/0.398ct 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.