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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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Pt950 スリランカ産コバルトスピネル 0.697ct リング

[5/4 22:00 Sale] Pt950 Sri Lankan Cobalt Spinel 0.697ct Ring, Japan-Germany Exchange Sale price¥98,000
ピンクスピネル 0.142ctルース（フランダースカット）

[On sale at 10pm on 4/29] Myanmar pink spinel 0.142ct loose stone Sale price¥8,800
[On sale from 10pm on 4/29] {Limited to 20 stones} Jam gacha💎 Benitoite or pink spinel with crystals (approx. 1ct from Myanmar) Loose stone {Multiple purchase discounts available}

[On sale from 10pm on 4/29] {Limited to 20 stones} Jam gacha💎 Benitoite or pink spinel with crystals (approx. 1ct from Myanmar) Loose stone {Multiple purchase discounts available} Sale price¥5,980
[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery

[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery Sale price¥6,980
Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》

Red spinel rough stone 1 stone (raspberry color)《Discount available for multiple purchases》 Sale priceFrom ¥3,980
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
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
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
{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
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
スピネル 1石《カスタムカット》

Spinel 1 stone《Custom cut》《Multiple purchase discount available》 Sale price¥5,980
Limited to 6 stones: 1 loose spinel stone from Myanmar (pentagonal cut, 3-3.5mm) Multiple purchase discounts available

Limited to 6 stones: 1 loose spinel stone from Myanmar (pentagonal cut, 3-3.5mm) Multiple purchase discounts available Sale price¥2,580
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 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. Sale price¥4,980
Limited to 10 stones Gem gacha💎 [Mr. Sanje] Tanzanian spinel (1 in 3 will be a red spinel) 1 loose stone [Multiple purchase discounts available]

Limited to 10 stones Gem gacha💎 [Mr. Sanje] Tanzanian spinel (1 in 3 will be a red spinel) 1 loose stone [Multiple purchase discounts available] Sale price¥5,980
[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available] Sale price¥3,980
Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discount available}

Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discount available} Sale price¥5,980
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. Sale price¥6,980
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] Sale price¥2,980
Limited to 8 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 8 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases. Sale price¥5,980
レッドスピネル 0.466ct原石

Myanmar red spinel rough stone 0.466ct Sale price¥18,800
レッドスピネル 0.368ct原石

Myanmar red spinel rough stone 0.368ct Sale price¥9,800
レッドスピネル 原石

Myanmar red spinel rough stone 0.272ct Sale price¥11,000
レッドスピネル 原石

Myanmar red spinel rough stone 0.271ct Sale price¥12,800
レッドスピネル 原石

Myanmar red spinel rough stone 0.236ct Sale price¥9,800
ミャンマー産レッドスピネル 0.218ct原石

Myanmar red spinel 0.218ct rough stone Sale price¥8,800
ベトナム産コバルトスピネル 0.331ct原石

Vietnam Cobalt Spinel 0.331ct Rough Stone Sale price¥19,800
ベトナム産コバルトスピネル 0.154ct原石

Vietnam Cobalt Spinel 0.154ct Rough Stone Sale price¥12,800
ベトナム産コバルトスピネル 0.142ct原石

Vietnam Cobalt Spinel 0.142ct Rough Stone Sale price¥15,800
ベトナム産コバルトスピネル 0.091ct原石

Vietnam Cobalt Spinel 0.091ct Rough Stone Sale price¥8,800
ベトナム産コバルトスピネル 0.088ct原石

Vietnam Cobalt Spinel 0.088ct Rough Stone Sale price¥8,800
ベトナム産コバルトスピネル 0.085ct原石

Vietnam Cobalt Spinel 0.085ct Rough Stone (Color Shift) Sale price¥5,980
ベトナム産コバルトスピネル 0.078ct原石

Vietnam Cobalt Spinel 0.078ct Rough Stone Sale price¥8,800
ベトナム産コバルトスピネル 0.075ct原石（カラーシフト）

Vietnam Cobalt Spinel 0.075ct Rough Stone (Color Shift) Sale price¥5,980
ベトナム産コバルトスピネル（カラーチェンジ） 0.082ctルース

Vietnam Cobalt Spinel (Color Change) 2.7mm/0.082ct Loose Stone, Japan-Germany Exchange Sale price¥59,800
スピネル 0.451ctルース

Blue spinel 0.451ct loose stone Sale price¥18,800
スリランカ産スピネル 0.763ctルース

Sri Lankan spinel 0.763ct loose stone Sale price¥12,800
スリランカ産スピネル 0.153ctルース

Sri Lankan Blue Spinel 0.153ct Loose Stone Sale price¥8,800
スリランカ産スピネル 0.584ctルース

Sri Lankan Blue Spinel 0.584ct Loose Stone Sale price¥12,800
Pt950スリランカ産パープルスピネル 0.29ct・ダイヤモンドリング

Pt950 Sri Lankan purple spinel 0.29ct diamond ring Sale price¥69,800
パープルスピネル 0.311ctルース

Myanmar Purple Spinel 0.311ct Loose Stone Sale price¥8,800
スリランカ産ブルースピネル 0.519ctルース

Sri Lankan Blue Spinel 0.519ct Loose Stone Sale price¥12,800
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
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 0.291ctルース

Tanzanian grey spinel 0.291ct 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

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments