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1 green spodumene rough stone (average 15ct)《Multiple purchase discount available》 Sale price¥3,980

Diamond loose sorting transition fee Sale price¥3,000

【10/31 22時販売】《数量限定》花珠アコヤ真珠1石（アコヤパール,約6.4～6.8ｍｍ）《複数購入割引有》 Sale price¥2,580

[Available from 10/22] <<limited to stones>> Tanzanian Winza Sapphire, Avg. 0.47ct <<multi-purchase discount available>></multi-purchase></limited>

[Available from 10/22] <> Tanzanian Winza Sapphire, Avg. 0.47ct <> Sale price¥7,980

[On sale July 10 at 10 PM] Limited 8 stones: Sweet Home Mine rhodochrosite single loose stone (average 0.1 ct) [Multiple purchase discount available] Sale price¥2,980

《Limited 9 Stones》Kochi Prefecture Blood Coral Branch (Raw Wood) 1 Stone (March Birthstone, Coral, Average 6.5ct) 《Multiple Purchase Discount Available》 Sale price¥6,980

《Limited to 11 Stones》Rouge Cut & Heart Shaped Gemstone Gacha Usually ¥18,800💎 Almandine Garnet, Pink Tourmaline, Scolite, Sapphire《Multiple Purchase Discount Available》 Sale price¥4,980

《Limited Edition》Chilean Seruleite (Japanese name: Pseudoturquoise) 4x5mm Cabochon Single Stone Loose《Bulk Purchase Discount Available》 Sale price¥3,980

《New Tucson Arrivals - Limited to 13 Stones》Mexican Opal, including B-grade stones (Egg-in-Opal and Water Opal) 《Multiple Purchase Discount Available》 Sale price¥2,980

《Limited to 10 Stones》Beautiful Pink Brazilian Morganite Loose Stone 《Bulk Purchase Discount Available》 Sale price¥2,980

TV Anime "BLUELOCK" x KARATZ Collaboration Vol. 2 Mark Pendant Top Sale price¥16,500

Limited to 8 stones: 1 loose synthetic alexandrite (custom cut by Mr. Sanjay, shield cut, octagonal cut, etc.) Discounts available for multiple purchases Sale price¥6,980

Limited to 9 stones, 1 Nigerian green beryl loose stone, multiple purchase discount available Sale price¥3,980

Limited to 8 pieces: 1 Nigerian Morganite loose stone (April birthstone, average 1 carat) Multiple purchase discounts available Sale price¥4,980

TV anime "Shinkalion Change the World" x KARATZ collaboration Kuzuryu Ryota model Sale priceFrom ¥16,800

Limited to 11 stones: 1 rough kornerupine stone from Madagascar (average 8.5 carats) Multiple purchase discounts available Sale price¥2,980

Madeleine "Semi-custom ring setting" Sale price¥89,800

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

Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

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 8 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3.2mm/average 0.12ct) Multiple purchase discounts available Sale price¥11,000

Limited to 21 stones: 1 loose Tanzanite stone from Tanzania (5 x 3 mm, oval cut) Multiple purchase discounts available Sale price¥4,980

Limited to 9 stones: 1 Indian Sillimanite Cat's Eye Loose Stone (8 x 6 mm) Multiple purchase discounts available Sale price¥3,980

Mille Sucre "Semi-custom ring setting" Sale price¥89,800

Brazilian green spodumene 1 stone approximately 7ct (discount available for multiple purchases) Sale price¥3,980

Pyrope spessartine garnet (color change garnet) 1 stone loose (multiple purchase discount available) Sale price¥5,980

Morganite 1 stone (oval cut, 5 x 7mm)《New birthstone for April》《Discount available for multiple purchases》 Sale price¥3,980

Additional fee +6,000 yen Sale price¥6,000

[On sale 10/30 at 22:00] 《Limited to 9 stones》 1 Iolite Sunstone loose stone from India (average 0.70ct) 《Multiple purchase discount available》 Sale price¥3,980

[Available 9/20 at 10 PM] Limited to 7 pieces: Brazilian Batalha Paraiba Tourmaline & Elbaite rough stone gacha, featuring bicolor Paraiba (CuO: 2.7%, MnO: 2.0%) usually priced at 25,800 yen (multi-purchase discounts available). Sale price¥6,980

[Available 9/19 at 10 PM] <9 sets only> Rainbow Garnet rough & loose stone set from Tenkawa, Nara (includes one hexagonal pyrite) <multi-buy discount available></multi-buy>

[Available 9/19 at 10 PM] <9 sets only> Rainbow Garnet rough & loose stone set from Tenkawa, Nara (includes one hexagonal pyrite) Sale price¥6,980

[Available 9/18 at 10 PM] 《Limited to 13 stones》 Afghanite loose stone from Afghanistan (average 2.0ct, cabochon cut) 《Multiple purchase discount available》 Sale price¥2,980

[Available 8/30 at 10 PM] Colombian Emerald Rough (Avg. 0.25ct) <<2 stones remaining>> <<multi-buy discounts available>></multi-buy>

[Available 8/30 at 10 PM] Colombian Emerald Rough (Avg. 0.25ct) <<2 stones remaining>> <> Sale price¥7,980

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available" Sale price¥8,800

Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases Sale price¥4,980

Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available} Sale price¥2,980

《Limited to 11 stones》Koshu Kiseki Kiriko plusthree Peridot (including lilypad) & Monsieur Saint-Jude cut peridot gacha《Multiple purchase discount available》 Sale price¥4,980

New Arrival from Tucson - Limited to 8 Stones: 1 Loose Australian Black Opal (Lightning Ridge Origin) - Multi-Purchase Discount Available Sale price¥5,980

Tucson New Arrivals / Limited 18 Pieces / Peruvian Blue Opal, 1 piece / Bulk Purchase Discount Available Sale price¥3,980

New Arrival in Tucson - Limited to 5 Stones - Brazilian Limonite Topaz, Average 2.8cts (Multiple Purchase Discounts Available) Sale price¥2,980

[On sale Wed, 9/30 at 6 PM] Anime "Overlord" x Jewelry Specialty Store KARATZ Collaboration: Albedo [Bardiche] Object 《Limited Quantity》 Sale price¥110,000

Limited to 18 Stones: 3mm Rhodolite Garnet from Sri Lanka, 1 stone loose. Discounts for multiple purchases. Sale price¥2,980

《Limited to 10 Stones》Diamond Gacha💎 with Gemstone Sorting (0.136ct/E/VVS-2/EXCELLENT/NONE (Heart & Cupid)) up for grabs 《Multiple purchase discount available》 Sale price¥3,980

Officially Licensed Product: Limited Edition of 100: Yokohama DeNA BayStars Gold Mini Figure "DB.Starman" Available in Silver or 18K Gold Sale priceFrom ¥12,800

Limited to 10 stones: Unheated Sapphire (3.5mm, Round Cut) from the Theppanawa Mine, Sri Lanka. Single loose stone. Discounts available for multiple purchases. Sale price¥4,980

Limited to 10 stones: One Saint-Jay cut amethyst (5.0-5.5mm, special cut round) loose stone. Discounts available for multiple purchases. Sale price¥3,980

[Sales end Fri, 11/13] Anime "Assassination Classroom" x KARATZ Collaboration - Koro-sensei Model Earrings (Single) Sale price¥12,800

[Available until 11/13 (Fri)] "Assassination Classroom" x KARATZ Collaboration: Koro-sensei Model Ring Sale price¥22,800

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.