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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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タンザニア産アヤナスピネル（ホットピンクスピネル）3.0mm/ 0.107ctルース

[Sale on 7/22 at 10 PM] Tanzanian Ayana Spinel (Hot Pink Spinel) 3.0mm/ 0.107ct Loose Stone Sale price¥18,800
[On sale July 20th at 10 PM JST] Tanzanian Pink Spinel (approx. 3x4mm, oval cut) - Limited to 12 stones. Multiple purchase discount available.

[On sale July 20th at 10 PM JST] Tanzanian Pink Spinel (approx. 3x4mm, oval cut) - Limited to 12 stones. Multiple purchase discount available. Sale price¥5,980
ミャンマー産レッドスピネル 0.229ctルース 鑑別書

[Sales start July 15th at 10 PM] Myanmar Red Spinel 0.229ct Loose Stone with Gemstone Report Sale price¥45,800
タンザニア産ピンクスピネル 0.148ctルース

[Posted on 12563395] Tanzanian Pink Spinel 0.148ct Loose Gemstone Sale price¥22,800
タンザニア産マヘンゲスピネル（ピンクスピネル） 0.333ctルース

[On Sale July 10 at 10 PM JST] Tanzanian Mahenge Spinel (Pink Spinel) 0.333ct Loose Stone with Gemological Report Sale price¥29,800
[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 Sale price¥6,980
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Kogami Shinya Model] "Blue Spinel"

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Kogami Shinya Model] "Blue Spinel" Sale priceFrom ¥25,800
ピンクスピネル1

1 stone loose pink spinel (princess cut, approx. 2.5mm)《Discount available for multiple purchases》 Sale price¥2,980
{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available}

{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
ビルマ産スピネル1石ルース（ペンタゴナルカット）《バンコク買付品》

1 stone loose spinel from Myanmar (Pentagonal cut)《Discount available for multiple purchases》 Sale price¥3,980
Limited Quantity: 1.5mm Pink Spinel from Myanmar (including Hot Pink Spinel) - Multiple Purchase Discounts Available

Limited Quantity: 1.5mm Pink Spinel from Myanmar (including Hot Pink Spinel) - Multiple Purchase Discounts Available Sale price¥2,580
Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》 Sale price¥5,980
[Sale from 10 PM on June 28] [Limited to 15 Stones] Synthetic Gem Gacha 💎 Includes a 1.02ct/D/VS1/3EX certified lab-grown diamond, normally priced at 50,000 yen (with a bonus synthetic cobalt spinel) [Bulk purchase discount available]

[Sale from 10 PM on June 28] [Limited to 15 Stones] Synthetic Gem Gacha 💎 Includes a 1.02ct/D/VS1/3EX certified lab-grown diamond, normally priced at 50,000 yen (with a bonus synthetic cobalt spinel) [Bulk purchase discount available] Sale price¥5,980
Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) - Single Loose Stone (Multiple Purchase Discounts Available)

Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) - Single Loose Stone (Multiple Purchase Discounts Available) Sale price¥4,980
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
Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》

Gem Gacha💎 Custom cut spinel《August birthstone》《Multiple purchase discounts available》 Sale price¥3,980
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 Sale price¥6,980
Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases.

Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980
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. Sale price¥4,980
Limited to 8 stones: Nobu buff top x rose cut spinel, 1 loose stone. Discounts available for multiple purchases.

Limited to 8 stones: Nobu buff top x rose cut spinel, 1 loose stone. Discounts available for multiple purchases. Sale price¥6,980
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 Sale price¥4,980
Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases. Sale price¥3,980
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 Sale price¥9,800
[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 Sale price¥9,800
Limited to 4 stones: 1 loose spinel stone from Sri Lanka. Discounts available for multiple purchases.

Limited to 4 stones: 1 loose spinel stone from Sri Lanka. Discounts available for multiple purchases. Sale price¥2,980
タンザニア産ピンクスピネル 0.246ctルース

[Sale on 7/1 at 10 PM] Tanzanian Pink Spinel 3.9mm/0.246ct Loose Stone with Certification Sale price¥35,800
ミャンマー産ブラックスピネル 3.061ctルース

[On Sale June 23rd at 10 PM] Myanmar Black Spinel 3.061ct Loose Stone with Gemstone Identification Report Sale price¥15,800
ミャンマー産レッドスピネル 0.453ctルース

[Sale June 16th, 10 PM] Myanmar Red Spinel 0.453ct Loose Stone Sale price¥19,800
ミャンマー産レッドスピネル 0.172ctルース

[Sale starts June 16th at 10 PM] Myanmar Red Spinel 3.3mm/0.172ct Loose Stone Sale price¥8,800
ミャンマー産レッドスピネル 0.214ctルース

[Sales start 10 PM on June 16] Myanmar Red Spinel 3.5mm/0.214ct Loose Gemstone Sale price¥9,800
ミャンマー産レッドスピネル 0.194ctルース

[On sale June 14th at 10 PM] Myanmar Red Spinel 3.4mm/0.194ct Loose Stone Sale price¥9,800
ミャンマー産レッドスピネル 0.234ctルース

[Sale starts June 16th, 10 PM JST] Myanmar Red Spinel 0.234ct Loose Gemstone Sale price¥12,800
ミャンマー産レッドスピネル 0.249ctルース

[On Sale June 16, 10 PM] Loose 0.249ct Myanmar Red Spinel Sale price¥12,800
ミャンマー産ヴァイオレットスピネル 0.426ctルース

Myanmar Violet Spinel 0.426ct Loose Sale price¥8,800
ピンクスピネル 0.713ctルース

Pink spinel 0.713ct loose stone Sale price¥8,800
スタースピネル 2.030ctルース

Myanmar Star Spinel 2.030ct Loose Sale price¥69,800
パープルスピネル 0.323ctルース

Purple Spinel 4.3mm/0.323ct Loose Stone Sale price¥6,980
ヴァイオレットスピネル 0.301ctルース

Violet spinel 0.301ct loose Sale price¥6,980
合成スピネル 1.668ctルース

Synthetic Spinel 1.668ct Loose Stone (Synthetic Blue Spinel) Sale price¥12,800
ヴァイオレットスピネル 0.642ctルース

Violet spinel 0.642ct loose Sale price¥6,980
ヴァイオレットスピネル 0.472ctルース

Violet spinel 0.472ct loose Sale price¥8,800
Pink spinel 0.365ct loose stone

Pink spinel 0.365ct loose stone Sale price¥9,800
0.227 ct Loose Pink Spinel from Mozambique

0.227 ct Loose Pink Spinel from Mozambique Sale price¥12,800
Sri Lankan Blue Spinel 1.218ct Loose Stone with Certificate of Authenticity

Sri Lankan Blue Spinel 1.218ct Loose Stone with Certificate of Authenticity Sale price¥45,800
ホットピンクスピネル 0.203ctルース（マヘンゲスピネル）

Hot Pink Spinel 0.203ct Loose (Mahenge Spinel) Sale price¥8,800
ピンクスピネル 3.208ctルース

Pink spinel 3.208ct loose Sale price¥98,000
スリランカ産パープルスピネル 1.060ctルース

Sri Lankan purple spinel 1.060ct loose stone Sale price¥98,000

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.