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Purple Chalcedony 1 stone《Discount available for multiple purchases》 Sale price¥3,980

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》 Sale price¥3,980

Officially Licensed Product: Limited Quantity & Limited Time 15% Off (¥25,800 → ¥21,800) Yokohama DeNA BayStars Home Blue Ring - Single Type | SV925 with White Chalcedony Sale price¥21,800

[Jeweler's Tools] Limited Quantity: H&C (Hearts & Cupids) Scope, CZ Size Comparison 10 Pieces, 2-Piece Set Sale price¥3,980

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

Limited quantity: Sri Lankan 2mm sapphire (sapphire) 1 loose stone (with identification certificate for all stones) Discounts for multiple purchases Sale price¥5,980

Limited to 23 stones: Labradorite & Andesine Labradorite 2-stone set (Hexagonal cut, 3mm) Multiple purchase discounts available Sale price¥2,980

H&C(ハート&キューピッド)ダイヤモンド1.2mmルース - カラッツSTORE

H&C (Hearts & Cupids) Diamond 1.5mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥4,980

Gem Gacha💎Chalcedony Gacha (1 in 5 will win a camellia cut)《Multiple purchase discounts available》 Sale price¥3,980

Amethyst/Citrine 4mm (Epicot cut) 2 stone set《Multiple purchase discount available》 Sale price¥1,980

1 stone loose spinel from Myanmar (Pentagonal cut)《Discount available for multiple purchases》 Sale price¥3,980

[Sales end on Sunday, August 31st] TV anime "A long time ago, magical girls and evil were enemies." x KARATZ collaboration acrylic coaster featuring newly drawn illustrations Sale price¥1,650

Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases. Sale price¥4,980

Limited to 20 stones: Russian Demantoid Garnet (Horsetail inclusions, approximately 2mm) - 1 loose stone. Discounts available for multiple purchases. Sale price¥5,980

Limited Quantity: Colombian Mango Quartz (Small - Thick) Multiple Purchase Discounts Available Sale price¥1,280

{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available} Sale price¥3,980

[Reception ends on 11/30]《Shipped from mid-January to late January》 “Bakuten!!” x KARATZ collaboration goods / Onaga T-shirt (black/white) 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

Rutilated quartz 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥1,980

Andalusite 1 stone (round cut, 3.0-3.5mm)《Multiple purchase discount available》 Sale price¥3,980

【石から選ぶセミオーダーペンダント枠】七夕 - KARATZ STORE｜カラッツSTORE

Tanabata《Semi-custom pendant frame》 Sale price¥59,800

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

Limited to 13 stones Gem gacha💎 Beautiful colored tanzanite 7mm, special cut sphene, heliodor (lots of inclusions) 1 loose stone Multiple purchase discounts available Sale price¥4,980

Limited to 9 sets Diamond Gacha 💎 Yellow Diamond Rough Stone and Loose Stone Set of 2 《Multiple Purchase Discounts Available》 Sale price¥2,980

Limited to 13 stones: Namibian Jeremejevite (Elemejevite) 1 stone loose stone (Multiple purchase discounts available) Sale price¥5,980

Limited to 25 stones: 1 unheated yogo sapphire rough stone. Discounts available for multiple purchases. Sale price¥4,980

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

Limited to 14 stones: 1 Cambodian Ratanakiri Blue Zircon (4mm) Multiple purchase discounts available Sale price¥5,980

Limited to 12 stones: August birthstone sardonyx (16 x 12 mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

Additional charge: K18PG (base metal) + 5,000 yen Sale price¥5,000

ネパール産オーシャンブルーカイヤナイト＋ブルーカイヤナイト2石セット《複数購入割引有》

Limited to 20 sets: Nepalese Ocean Blue Kyanite + Blue Kyanite 2-stone set (Multiple purchase discounts available) Sale price¥3,980

[Limited stock] "Bakuten!!" x KARATZ collaboration jewelry, Onaga pendant Sale priceFrom ¥24,800

Additional charge for resizing: 2,500 yen Sale price¥2,500

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980

Rose cut apatite 1 stone 3mm《Multiple purchase discount available》 Sale price¥1,980

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

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

Diamond loose/certificate transfer fee Sale price¥5,000

[Sales start on Friday, November 21st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration jewelry: Demon Hand Pendant Sale priceFrom ¥24,800

Limited to 10 stones: Brazilian Bicolor Tourmaline (Baguette Cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980

Limited to 10 stones: Koshu Precious Stone Kiriko "Broom" plusthree 45ct Dendritic Quartz Gacha (Includes 1 Copper Rutile in Quartz) (Multiple purchase discounts available) Sale price¥3,980

Limited to 12 stones: Madagascar Sapphirine (Sapphirine) Loose Stone (Multiple purchase discounts available) Sale price¥2,980

Limited to 10 stones: 1 petzotite loose stone from Madagascar (2mm, round cut) Multiple purchase discounts available Sale price¥3,980

[While supplies last, same-day shipping] TV anime "I went to a mixer and there were no girls there" x KARATZ collaboration swaying keychain Sale price¥880

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

Labradorite 1 stone loose (12 x 16mm)《Multiple purchase discount available》 Sale price¥2,580

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》 Sale price¥5,980

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.