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[On sale from 10pm on 4/5] [Jeweler's Tools] {Only a few left} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire

[On sale from 10pm on 4/5] [Jeweler's Tools] {Only a few left} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire Sale price¥3,980
[On sale from 10pm on 4/13] Limited to 20 stones Gem gacha💎 One loose stone of pink tourmaline Sakura in-cut and mint diopsite with many inclusions and chips (multiple purchase discounts available)

[On sale from 10pm on 4/13] Limited to 20 stones Gem gacha💎 One loose stone of pink tourmaline Sakura in-cut and mint diopsite with many inclusions and chips (multiple purchase discounts available) Sale price¥3,980
[On sale 3/29 at 10pm] {Only a few left} Fluorescent Diamond Gacha💎 (SI class equivalent, orange/green fluorescent, etc.) {Multiple purchase discounts available}

[On sale 3/29 at 10pm] {Only a few left} Fluorescent Diamond Gacha💎 (SI class equivalent, orange/green fluorescent, etc.) {Multiple purchase discounts available} Sale price¥2,980
[On sale from 10pm on 4/5] [Jeweler's Tools] [Limited Quantity] H&C (Heart & Cupid) Special Scope - CZ Size Comparison 10 Pieces 2-Piece Set

[On sale from 10pm on 4/5] [Jeweler's Tools] [Limited Quantity] H&C (Heart & Cupid) Special Scope - CZ Size Comparison 10 Pieces 2-Piece Set Sale price¥3,980
[On sale 4/4 at 10pm] {4 stones remaining} Brazilian unheated Imperial Topaz 1 loose stone {Multiple purchase discounts available}

[On sale 4/4 at 10pm] {4 stones remaining} Brazilian unheated Imperial Topaz 1 loose stone {Multiple purchase discounts available} Sale price¥3,980
[On sale at 10pm on 4/12] {Limited to 9 sets} Diamond Gacha💎 Yellow Diamond Rough Stone and 2 Loose Stone Set {Multiple Purchase Discounts Available}

[On sale at 10pm on 4/12] {Limited to 9 sets} Diamond Gacha💎 Yellow Diamond Rough Stone and 2 Loose Stone Set {Multiple Purchase Discounts Available} Sale price¥2,980
[On sale from 10pm on 4/4] [Jeweler's Tools] [Limited Quantity] Chelsea Color Filter Emerald 2-piece Set

[On sale from 10pm on 4/4] [Jeweler's Tools] [Limited Quantity] Chelsea Color Filter Emerald 2-piece Set Sale price¥6,980
[On sale from 10pm on 4/6] [Limited to 13 stones] Namibian Jeremejevite (Elemejevite) 1 loose stone [Multiple purchase discounts available]

[On sale from 10pm on 4/6] [Limited to 13 stones] Namibian Jeremejevite (Elemejevite) 1 loose stone [Multiple purchase discounts available] Sale price¥5,980
[On sale from 10pm on 4/6] [Limited to 9 stones] 1 loose Brazilian Elestial Amethyst (average 2.5ct) [Multiple purchase discounts available]

[On sale from 10pm on 4/6] [Limited to 9 stones] 1 loose Brazilian Elestial Amethyst (average 2.5ct) [Multiple purchase discounts available] Sale price¥5,980
[On sale at 10pm on 3/29] {Only one left} 1 neon blue apatite loose stone from Madagascar (special cut, average 0.8ct) {Multiple purchase discounts available}

[On sale at 10pm on 3/29] {Only one left} 1 neon blue apatite loose stone from Madagascar (special cut, average 0.8ct) {Multiple purchase discounts available} Sale price¥5,980
[On sale from 10pm on March 30th] {Limited to 10 stones} 1 petzotite loose stone from Madagascar (2mm, round cut) {Multiple purchase discounts available}

[On sale from 10pm on March 30th] {Limited to 10 stones} 1 petzotite loose stone from Madagascar (2mm, round cut) {Multiple purchase discounts available} Sale price¥3,980
[On sale from 10pm on March 30th] Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discounts available}

[On sale from 10pm on March 30th] Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discounts available} Sale price¥1,580
[On sale from 10pm on 4/5] Limited to 8 pieces, 1 Nigerian Morganite loose stone (April birthstone, average 1ct) [Multiple purchase discounts available]

[On sale from 10pm on 4/5] Limited to 8 pieces, 1 Nigerian Morganite loose stone (April birthstone, average 1ct) [Multiple purchase discounts available] Sale price¥4,980
{Only one left} Madagascar Pezzottaite 1 loose stone (2.1mm, round cut) {Multiple purchase discounts available}

{Only one left} Madagascar Pezzottaite 1 loose stone (2.1mm, round cut) {Multiple purchase discounts available} Sale price¥3,980
[On sale from 10pm on 4/5] {Limited to 5 stones} 1 Brazilian Alexandrite loose stone (round cut, 1.3mm) {Multiple purchase discounts available}

[On sale from 10pm on 4/5] {Limited to 5 stones} 1 Brazilian Alexandrite loose stone (round cut, 1.3mm) {Multiple purchase discounts available} Sale price¥4,980
[On sale from 10pm on 4/5] Limited to 13 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available]

[On sale from 10pm on 4/5] Limited to 13 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available] Sale price¥6,980
[On sale from 10pm on 4/5] Limited to 21 stones: 1 loose stone of Spanish sphalerite (faceted cut, average 0.60ct) [Multiple purchase discounts available]

[On sale from 10pm on 4/5] Limited to 21 stones: 1 loose stone of Spanish sphalerite (faceted cut, average 0.60ct) [Multiple purchase discounts available] Sale price¥3,980
[On sale from 10pm on 4/5] Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discounts available}

[On sale from 10pm on 4/5] Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discounts available} Sale price¥5,980
[On sale from 10pm on 4/13] [Limited to 9 stones] 1 loose stone of lazurite in sodalite from Afghanistan (faceted cut, average 0.45ct) [Multiple purchase discounts available]

[On sale from 10pm on 4/13] [Limited to 9 stones] 1 loose stone of lazurite in sodalite from Afghanistan (faceted cut, average 0.45ct) [Multiple purchase discounts available] Sale price¥4,980
[On sale from 10pm on 4/20] {Limited to 3 stones} Gem gacha💎Black star sapphire (including 12-ray star) loose stone from Bangkacha, Thailand

[On sale from 10pm on 4/20] {Limited to 3 stones} Gem gacha💎Black star sapphire (including 12-ray star) loose stone from Bangkacha, Thailand Sale price¥6,980
[On sale from 10pm on 4/20] Limited to 3 stones UV type mint garnet 1 loose stone (oval cut) Multiple purchase discounts available

[On sale from 10pm on 4/20] Limited to 3 stones UV type mint garnet 1 loose stone (oval cut) Multiple purchase discounts available Sale price¥2,980
【4/20 22時販売】《限定5石》メキシコ産ハイアライトオパール1石ルース（平均0.5ct）《複数購入割引有》

【4/20 22時販売】《限定5石》メキシコ産ハイアライトオパール1石ルース（平均0.5ct）《複数購入割引有》 Sale price¥2,980
アメリカ産レッドベリル 0.080ctルース

[On sale at 22:00 on 4/6] American red beryl 0.080ct loose stone Sale price¥39,800
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

[On sale at 22:00 on 4/5] Vietnam Cobalt Spinel (Color Change) 2.7mm/0.082ct Loose Stone, Nikkei Kan Sale price¥59,800
ブラジル産パライバトルマリン 0.220ctルース

[On sale at 22:00 on 4/4] Brazilian Paraiba Tourmaline 0.220ct loose stone (CuO: 0.7%, MnO: 3.0%) GIT Sale price¥45,800
ブルーサファイア 3.9mm/0.280ctルース

[On sale 4/2 at 10pm] Blue sapphire 3.9mm/0.280ct loose stone Sale price¥9,800
タンザニア産サンストーン（イリュージョンサンストーン） 0.381ctルース

[On sale 4/2 at 10pm] Tanzanian Sunstone (Illusion Sunstone) 0.381ct Loose Sale price¥7,980
ブラジル産サンタマリアアクアマリン 0.240ctルース

[On sale 4/2 at 10pm] Brazilian Santa Maria Aquamarine 0.240ct loose stone Sale price¥8,800
エメラルド 0.138ctルース

[On sale from 10pm on 4/1] Emerald 0.138ct loose stone Sale price¥6,980
メキシコ産カンテラオパール 6.629ctルース

[On sale 4/1 at 22:00] Mexican Cantera Opal 6.629ct loose stone Sale price¥9,800
インド産アイオライトサンストーン 0.320ctルース

[On sale from 10pm on 4/1] Indian Iolite Sunstone 0.320ct Loose Sale price¥8,800
タンザニア産タンザナイト 0.250ctルース

[On sale from 10pm on 4/1] Tanzanite from Tanzania 0.250ct loose stone Sale price¥8,800
K18メキシコ産ウォーターオパール 4.3mm/0.175ct リング

[On sale from 10pm on 4/5] K18 Mexican water opal 4.3mm/0.175ct ring Sale price¥79,800
K18PG ブラジル産カラーシフトアメジスト・ハックマナイト・ピンクサファイアリング

[On sale from 10pm on 4/5] K18PG Brazilian color shift amethyst, hackmanite and pink sapphire ring Sale price¥79,800
ダイヤモンド 0.091ctルース(G, SI2)

[On sale at 10pm on March 29th] Diamond 0.091ct loose stone (G, SI2, sector cut) Sale price¥9,800
イエローダイヤモンド 0.390ctルース(UNDER S(LIGHT YELLOW), VVS1, 3Excellent H&C)

[On sale 3/29 at 10pm] Yellow Diamond 4.7mm/0.390ct Loose (LIGHT YELLOW, VVS1, 3Excellent H&C) Sale price¥49,800
ブラジル産アメトリン 11.843ctルース

[On sale 3/29 at 10pm] Brazilian Ametrine 11.843ct loose stone Sale price¥22,800
ブルージルコン 1.120ctルース

[On sale at 22:00 on 3/30] [Clover in cut] Cambodian blue zircon (Ratanakiri blue) 6.0mm/1.120ct {Collaboration} Loose Sale price¥39,800
【甲州貴石切子】ミルキーアクアマリン 5.20ctルース - カラッツSTORE

[On sale at 22:00 on 3/30] [Koshu Precious Stone Cutting] Milky Aquamarine from Brazil 5.209ct Loose Color [Collaboration] Patch Nichidokukan Sale price¥59,800
[On sale from 10pm on March 30th] Limited to 24 stones South African diamond rough (yellow fluorescent, orange fluorescent, green fluorescent) [Multiple purchase discounts available]

[On sale from 10pm on March 30th] Limited to 24 stones South African diamond rough (yellow fluorescent, orange fluorescent, green fluorescent) [Multiple purchase discounts available] Sale price¥2,980
ローズクォーツ 41.633ctルース

[On sale at 10pm on March 30th] [Takeshi Yamamoto] Brazilian rose quartz 41.633ct loose stone Sale price¥59,800
ロッククリスタル 18.130ctルース

[On sale from 10pm on 4/1] [Takeshi Yamamoto] Brazilian rock crystal 18.130ct loose stone Sale price¥45,800
メキシコ産オパール 1.465ctルース

[On sale from 10pm on 4/1] [Sakura Shape] Mexican Opal 8.2mm/1.465ct [Collaboration] Loose Patch Sale price¥45,800
コロンビア産パイライトインエメラルド 27.414ctルース

[On sale 4/4 at 10pm] Colombian pyrite in emerald 27.414ct loose stone Sale price¥298,000
水入りクォーツ（ウォータインクォーツ） 26.243ctルース

[On sale 4/4 at 10pm] Sri Lankan Water-filled Quartz (Waterin Quartz) 26.243ct Loose Stone, Nikkeikan Sale price¥69,800
華真珠（南洋真珠） 16.380ctルース

[On sale from 10pm on 4/5] Hana Shinju (South Sea pearl) 16.380ct loose pearl with Hana Shinju guarantee card Sale price¥69,800
ブラジル産シトリン 2.641ctルース

[On sale 4/2 at 10pm] Brazilian citrine 2.641ct loose stone Sale price¥8,800
ブラジル産パライバトルマリン 0.173ctルース（CuO:1.9%、MnO:1.0%）

[On sale 4/4 at 10pm] Brazilian Paraiba Tourmaline 0.173ct loose stone (CuO: 1.9%, MnO: 1.0%) Sale price¥158,000

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.

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