Ruth

【KEN氏】ブラジル産アメジスト 5mm/0.390ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Amethyst 5mm/0.390ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

イエローダイヤモンド 4mm/0.261ctルース(LIGHT YELLOW, VS-2, VeryGood)（セミオーダーメイドセット）

[Staff Selection] Yellow Diamond 4mm/0.261ct Loose (LIGHT YELLOW, VS-2, Very Good) (Semi-Custom Made Set) Sale price¥59,800

Brazilian Green Tourmaline 12.252ct Loose Stone Sale price¥398,000

Colombian pyrite in emerald 6.415ct loose stone Sale price¥298,000

ブラジル産パライバトルマリン 0.233ctルース（CuO:1.6％.MnO:2.4％）

Brazilian Paraiba Tourmaline 0.233ct loose stone (CuO: 1.6%. MnO: 2.4%) Sale price¥358,000

Purple spinel 0.955ct loose stone Sale price¥19,800

Tanzanian Lavender Tanzanite 0.498ct Loose Stone Sale price¥14,800

Tanzanian Lavender Tanzanite 0.382ct Loose Stone Sale price¥12,800

[Rouge cut] Morganite 2.059ct loose stone Sale price¥8,800

Brazilian copper rutilated quartz 1.410ct loose stone Sale price¥8,800

Brazilian copper rutilated quartz 1.560ct loose stone Sale price¥8,800

Brazilian copper rutilated quartz 1.381ct loose stone Sale price¥8,800

Brazilian copper rutilated quartz 1.991ct loose stone Sale price¥6,980

【スタッフセレクション】　【KEN氏】タンザニア産アイオライト 3.7mm/0.150ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Tanzanian Iolite 3.7mm/0.150ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

【KEN氏】ブラジル産グリーントルマリン 5.2mm/0.584ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Green Tourmaline 5.2mm/0.584ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】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） 0.450ctルース（セミオーダーメイドセッ

[Staff Selection] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.450ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[Staff Selection] [Mr. KEN] Tanzanian Iolite 5.5mm/0.589ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

Tanzanian Golden Sheen Sapphire 3.8mm/0.301ct Loose Stone Sale price¥13,800

Limited to 23 stones: Ethiopian Opal, 1 loose sphere (4.5-5.0mm) - Multiple purchase discounts available Sale price¥5,980

Set of 2 blue apatite stones from Madagascar (rough stone + loose stone) {Multiple purchase discounts available} Sale price¥2,980

Benitoite 1.8mm/0.025ct loose stone (colorless benitoite) Sale price¥12,800

Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available} Sale price¥4,980

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580

《Only 1 left》Labradorite loose stone (20x15mm, for beginners) 《Multi-buy discount available》 Sale price¥3,980

Limited to 6 stones: 1 loose, unheated silky pink sapphire from Vietnam (milky pink sapphire) Multiple purchase discounts available Sale price¥5,980

Mozambique colorless tourmaline (acroite) 3.542ct loose stone Sale price¥69,800

Mexican egg-in-opal 1.243ct loose stone Sale price¥14,800

Mexican egg-in-opal 0.627ct loose stone Sale price¥8,800

Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut) Sale price¥3,980

Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut) Sale price¥6,980

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

Montana Sapphire 0.254ct loose Sale price¥9,800

American red beryl 0.207ct loose Sale price¥49,800

[Koshu Precious Stones plusthree] Green Quartz 6mm/0.743ct Loose with Patch Sale price¥25,800

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

[Moonsteiner] Pyrite in Quartz 18.288ct Loose Sale price¥59,800

Tanzanian Kornerupine Cat's Eye 0.866ct Loose Stone Sale price¥5,980

Tanzanian Kornerupine Cat's Eye 1.539ct Loose Stone Sale price¥9,800

Purple Spinel 4.8mm/0.422ct Loose Stone Sale price¥6,980

Pink spinel 5.2mm/0.573ct loose stone Sale price¥6,580

Purple spinel 4.5mm/0.365ct loose Sale price¥4,980

Pink spinel 4.3mm/0.342ct loose Sale price¥6,980

Pink spinel 3.8mm/0.192ct loose Sale price¥5,980

タンザニア・マヘンゲ産ピンクスピネル原石・ルース2石セット（プリンセスカット）《複数購入割引有》

《Limited to 20 stones》 Pink spinel raw stone from Mahenge, Tanzania, loose 2 stone set (princess cut)《Multiple purchase discount available》 Sale price¥3,980

[Limited to 9 stones] Brazilian green quartz 1 stone loose (10mm) [Multiple purchase discount available] Sale price¥3,980

《Limited to 6 stones》 1 stone loose green quartz from Brazil (8mm, concave cut) 《Discount available for multiple purchases》 Sale price¥3,980

Purple spinel 0.465ct loose Sale price¥5,980

Twin star sapphire from Sri Lanka 3.858ct loose (black star sapphire) Sale price¥59,800

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.