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spinel

Spinel is the birthstone for August. Spinel comes in a wide variety of colors, including red, blue, pink, green, purple, black, gray, and colorless. It has a high Mohs hardness of 7.5 to 8, so it can be enjoyed as everyday jewelry. They are often produced in the same octahedral crystal form as diamonds, and their rounded, soft form gives them a different charm than cut gemstones.

Karatz GemMagazine
" Spinel "

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タンザニア産スピネル 0.165ctルース

Tanzanian Blue Spinel 0.165ct Loose Stone Sale price¥8,800
タンザニア産スピネル 0.244ctルース

Tanzania Blue Spinel 0.244ct Loose Stone Sale price¥9,800
タンザニア産スピネル 0.236ctルース

Tanzania Purple Spinel 0.236ct Loose Stone Sale price¥9,800
タンザニア産パープルスピネル 0.333ctルース

Tanzania Purple Spinel 0.333ct Loose Stone Sale price¥9,800
タンザニア産パープルスピネル 0.356ctルース

Tanzania Purple Spinel 0.356ct Loose Stone Sale price¥8,800
タンザニア産パープルスピネル 0.307ctルース

Tanzania Purple Spinel 0.307ct Loose Stone Sale price¥9,800
タンザニア産パープルスピネル 0.346ctルース

Tanzania Purple Spinel 0.346ct Loose Stone Sale price¥8,800
Myanmar spinel and Tanzanite 7 stone set ring (Alterno setting)

Myanmar spinel and Tanzanite 7 stone set ring (Alterno setting) Sale price¥98,000
タンザニア産グレースピネル 0.844ctルース

Tanzania gray spinel 0.844ct loose stone Sale price¥18,800
Myanmar spinel 4.0mm/0.263ct loose stone

Myanmar spinel 4.0mm/0.263ct loose stone Sale price¥7,980
ピンクスピネル 0.344ctルース

Myanmar pink spinel 0.344ct loose stone Sale price¥8,800
ミャンマー産ピンクスピネル 0.520ctルース

Myanmar pink spinel 0.520ct loose stone Sale price¥12,800
スピネル原石１石（バイカラーやパープル系）《複数購入割引有》

Limited to 7 stones: 1 rough spinel stone (bicolor spinel, etc.) Multiple purchase discounts available Sale price¥3,980
パープルスピネル 0.955ctルース

Purple spinel 0.955ct loose stone Sale price¥19,800
パープルスピネル 0.422ctルース

Purple Spinel 4.8mm/0.422ct Loose Stone Sale price¥6,980
ピンクスピネル 0.573ctルース

Pink spinel 5.2mm/0.573ct loose stone Sale price¥6,580
スピネル 0.365ctルース

Purple spinel 4.5mm/0.365ct loose Sale price¥4,980
ピンクスピネル 0.342ctルース

Pink spinel 4.3mm/0.342ct loose Sale price¥6,980
ピンクスピネル 0.192ctルース

Pink spinel 3.8mm/0.192ct loose Sale price¥5,980
パープルスピネル 0.465ctルース

Purple spinel 0.465ct loose Sale price¥5,980
パープルスピネル 0.754ctルース

Purple spinel 0.754ct loose Sale price¥9,800
ブルースピネル 1.949ctルース

Blue spinel 1.949ct loose Sale price¥29,800
ラベンダースピネル 0.305ctルース

Lavender spinel 0.305ct loose Sale price¥7,980
Sold out [Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

Sold out ピンクスピネル1

1 stone loose pink spinel (princess cut, approx. 2.5mm)《Discount available for multiple purchases》

Sold out Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for advanced users: rough spinel from Mozambique)

Sold out Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》
Sold out Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Sold out Limited to 10 stones: Blue Spinel Gacha, Cobalt Spinel (including color-shifting type), 2 stones with Japanese and German appraisal certificates, and a bonus synthetic cobalt spinel. Discounts available for multiple purchases.

Limited to 10 stones: Blue Spinel Gacha, Cobalt Spinel (including color-shifting type), 2 stones with Japanese and German appraisal certificates, and a bonus synthetic cobalt spinel. Discounts available for multiple purchases.
Sold out Limited to 10 stones! Spinel Gacha: 1 loose stone including a 1.17ct bicolor spinel. Multiple purchase discounts available.

Limited to 10 stones! Spinel Gacha: 1 loose stone including a 1.17ct bicolor spinel. Multiple purchase discounts available.
Sold out Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)

Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)
Sold out Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases

Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases
Sold out Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases.
Sold out [Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》

[Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》
Sold out Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]

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

Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out 《Limited to 8 Stones》Myanmar Black Spinel (Blemished) 《Bulk Purchase Discount Available》

《Limited to 8 Stones》Myanmar Black Spinel (Blemished) 《Bulk Purchase Discount Available》
Sold out Myanmar Red Spinel (Pear Shape, approx. 4x3mm) - Only 1 Stone Left! - Multi-Purchase Discount Available

Myanmar Red Spinel (Pear Shape, approx. 4x3mm) - Only 1 Stone Left! - Multi-Purchase Discount Available
Sold out Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Sold out Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Sold out スリランカ産パープルスピネル 1.213ctルース

[Deadline: Wed, 10/21, 10:00 AM: Lottery Sale] Sri Lankan Purple Spinel 1.213ct Loose Gemstone with Appraisal Report

Sold out タンザニア産コバルトスピネル 0.038ctルース

[Available 10/9 10:00 PM] Tanzanian Cobalt Spinel 2.0mm/0.038ct Loose Gemstone with Identification Report

Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》
Sold out ミャンマー産オレンジスピネル 0.347ctルース

[Lottery Sale_10][For Winners Only][Item 12563542] Burmese Orange Spinel 0.347ct Loose Stone with Appraisal Report

Sold out ビルマ産非加熱ジェダイスピネル 0.490ctルース

[Lottery Sale 0825_08] Unheated Burmese Jadeite Spinel 0.490ct Loose Stone with GUILD Certificate
Sold out [Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available

[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available
Sold out ビルマ産非加熱ジェダイスピネル 0.510ctルース

Unheated Burmese Jedi Spinel 0.510ct Loose Stone with Identification Report

Sold out 【ダンデライオンカット】タンザニア産ブルースピネル 6.0mm/0.953ctルース 鑑別書鑑定士が運営しています。

[Dandelion Cut] Tanzanian Blue Spinel 6.0mm/0.953ct Loose Stone with Certificate

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.