New Arrivals & Updates on 11/1 (Sat)
【11/8 22時販売】K18/Pt950 コロンビア産ノンオイルエメラルド 3.1mm/0.10ct リング GIA
Sale price¥128,000
【11/8 22時販売】Pt950ブラジル産サンタマリアアクアマリン 0.743ct リング
Sale price¥98,000
【11/8 22時販売】K18PG マダガスカル産スフェーン 0.48ct ペンダント（ネックレス）
Sale price¥98,000
【11/8 22時販売】ロシア産デマントイドガーネット 0.192ctルース
Sale price¥79,800
Madagascar Apatite 0.901ct Loose Stone
Sale price¥9,800
Colombian emerald 0.200ct loose stone
Sale price¥39,800
Dumortierite in Quartz 1.909ct loose stone
Sale price¥9,800
![[12556455] Violet sapphire 0.310ct loose stone](http://store.karatz.jp/cdn/shop/files/PA294659.jpg?v=1762346259&width=4000)
[12556455] Violet sapphire 0.310ct loose stone
Sale price¥18,800
Prehnite 3.751ct loose stone
Sale price¥9,800
![[12555601] Tanzanite from Tanzania 0.637ct loose stone](http://store.karatz.jp/cdn/shop/files/PA294477_a6e3062e-5cc2-48f5-86bc-3cc9e18dbeb5.jpg?v=1762346260&width=2920)
[12555601] Tanzanite from Tanzania 0.637ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 2.341ct loose stone
Sale price¥79,800
Yellow sapphire from Madagascar 0.181ct loose
Sale price¥4,980
Green sapphire from Madagascar 0.199ct loose
Sale price¥6,980
Ice blue sapphire from Madagascar 0.181ct loose
Sale price¥6,980
Madagascar sapphire 0.205ct loose
Sale price¥7,980
Yellow sapphire from Madagascar 0.232ct loose
Sale price¥6,980
Yellow sapphire from Madagascar 0.207ct loose
Sale price¥6,980
Brazilian imperial topaz 3.287ct loose
Sale price¥15,800
![[Posted 12544254] Cornel pin 0.228ct loose](http://store.karatz.jp/cdn/shop/files/P7208361_3e0724cb-8872-4b61-a2c7-2118612f7f35.jpg?v=1762495864&width=2857)
[Posted 12544254] Cornel pin 0.228ct loose
Sale price¥18,800
Brazilian bicolor tourmaline 1.764ct loose
Sale price¥32,800
Brazilian blue tourmaline 0.376ct loose
Sale price¥7,980
Cambodian blue zircon (Ratanakiri blue) 3.992ct loose
Sale price¥59,800
Dendritic quartz 7.997ct loose
Sale price¥6,980
Tinker Bell Quartz (Pink Fire Quartz) 1.664ct Loose (Faceted Cut)
Sale price¥12,800
![[12557622] Madagascar Apatite 0.527ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA305120.jpg?v=1762293922&width=4000)
![[12558144] Moldavite 0.097ct loose stone from the former Czechoslovakia](http://store.karatz.jp/cdn/shop/files/PA305168.jpg?v=1762293920&width=4000)
![[12558255] Brazilian Pink Tourmaline 0.577ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA305204.jpg?v=1762293920&width=4000)
[12558255] Brazilian Pink Tourmaline 0.577ct Loose Stone
Sale price¥18,800
![[12558258] 1.967ct Andalusite Loose Stone from Madagascar](http://store.karatz.jp/cdn/shop/files/PA305248.jpg?v=1762293920&width=4000)
[12558258] 1.967ct Andalusite Loose Stone from Madagascar
Sale price¥29,800
![[12558261] Colombian Bicolor Fluorite 3.209ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA305260_aa499f83-acaf-4abe-be25-bc1644aaf185.jpg?v=1762293920&width=3212)
[12558261] Colombian Bicolor Fluorite 3.209ct Loose Stone
Sale price¥18,800
![[12560847] Russian Demantoid Garnet (Horsetail) 0.280ct Loose](http://store.karatz.jp/cdn/shop/files/PA230483_616a525d-4a7b-44a9-99dd-e7e97bd89efe.jpg?v=1762176725&width=3317)
[12560847] Russian Demantoid Garnet (Horsetail) 0.280ct Loose
Sale price¥49,800
![[12556633] Peridot 1.176ct loose stone](http://store.karatz.jp/cdn/shop/files/PA294755_2df0a260-f370-43cb-a9d9-7b28de9e31a6.jpg?v=1762176724&width=3268)
[12556633] Peridot 1.176ct loose stone
Sale price¥9,800
Brown diamond 0.132ct loose
Sale price¥12,800
![[12560961] Brazilian citrine 1.125ct loose stone](http://store.karatz.jp/cdn/shop/files/PA232086_c4ac78a5-7273-4b5b-b351-0e0491b37048.jpg?v=1762176724&width=3297)
[12560961] Brazilian citrine 1.125ct loose stone
Sale price¥9,800
![[12558199] Labradorite 0.903ct loose stone](http://store.karatz.jp/cdn/shop/files/PA230920.jpg?v=1761635647&width=4000)
[12558199] Labradorite 0.903ct loose stone
Sale price¥9,800
![[12558291] Tibetan Andesine 0.361ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA231178.jpg?v=1762157488&width=4000)
[12558291] Tibetan Andesine 0.361ct Loose Stone
Sale price¥8,800
List of new arrivals
Brazilian bicolor tourmaline 1.764ct loose
Sale price¥32,800
Brazilian bicolor tourmaline 1.565ct loose
Sale price¥19,800
Tinker Bell Quartz (Pink Fire Quartz) 1.664ct Loose (Faceted Cut)
Sale price¥12,800
Brazilian blue tourmaline 0.376ct loose
Sale price¥7,980
Dendritic quartz 7.997ct loose
Sale price¥6,980
Cambodian blue zircon (Ratanakiri blue) 3.992ct loose
Sale price¥59,800
Brazilian bicolor tourmaline 1.148ct loose
Sale price¥15,800
Brazilian bicolor tourmaline 1.056ct loose
Sale price¥12,800
Brazilian bicolor tourmaline 0.877ct loose
Sale price¥12,800
Rough diamond (makeable) 0.185ct loose (VS-SI)
Sale price¥19,800
Rough diamond (makeable) 0.345ct loose (VS-SI equivalent)
Sale price¥29,800
Sunstone (Illusion Sunstone) 0.844ct Loose
Sale price¥8,800
Sunstone (Illusion Sunstone) 0.895ct loose stone
Sale price¥8,800
Sri Lankan star sapphire 1.323ct loose
Sale price¥3,980
Sri Lankan star sapphire 1.061ct loose
Sale price¥3,980
Bicolor tourmaline 5.825ct loose
Sale price¥128,000
Brazilian emerald 3.3mm/0.119ct loose
Sale price¥22,800
Bicolor tourmaline 1.140ct loose
Sale price¥19,800
Bicolor tourmaline 0.707ct loose
Sale price¥12,800
Bicolor tourmaline 4.118ct loose
Sale price¥55,800
Prehnite 5.3mm/0.469ct loose
Sale price¥3,980
Prehnite 5.6mm/0.565ct loose
Sale price¥3,980
Orange zircon 0.453ct loose
Sale price¥3,980
Pink zircon 0.508ct loose
Sale price¥6,980
Zircon 0.414ct loose
Sale price¥3,980
Goethite in Amethyst 0.806ct loose stone
Sale price¥4,980
Brazilian emerald cat's eye 0.459ct loose
Sale price¥5,980
Tinker Bell Quartz (Pink Fire Quartz) 8.5mm/1.715ct Loose
Sale price¥25,800
Paraiba tourmaline from Brazil 0.129ct loose (CuO:0.8%,MnO:0.1%)
Sale price¥48,800
Paraiba tourmaline from Brazil 0.101ct loose (CuO:0.9%,MnO:0.1%)
Sale price¥39,800
Oregon Sunstone from the United States 2.731ct loose stone
Sale price¥29,800
Taaffeite from Myanmar 0.580ct Ruth Japanese German edition
Sale price¥39,800
Rhodochrosite 1.884ct loose from Detroit City, USA
Sale price¥188,000
Parasite Peridot (Paracytic Peridot) 0.541ct Loose Japanese-German Edition
Sale price¥256,000
Rhodochrosite 0.527ct loose from Detroit City, USA
Sale price¥45,800
Rhodochrosite 0.516ct loose from Detroit City, USA
Sale price¥45,800
Blue tourmaline from Afghanistan 0.209ct loose
Sale price¥2,980
Blue tourmaline from Afghanistan 3.5mm/0.178ct loose
Sale price¥3,980
Yellow tourmaline 0.431ct loose stone
Sale price¥3,980
Color change sapphire 0.283ct loose
Sale price¥3,980
Rutilated Quartz (Rutilated Quartz) 6.402ct Loose
Sale price¥3,980
Color change sapphire 0.401ct loose
Sale price¥3,980
《Products eligible for multiple purchase discount》
【11/3 22時販売】《14石限定》ロシア産ノンオイルエメラルド1石ルース(2.1ｍｍ,スクエアカット)《複数購入割引有》
Sale price¥5,980
【11/2 22時販売開始】《限定10石》バイカラーピンクタンザナイト原石含むタンザナイト原石ガチャ（平均4.2ct）《複数購入割引有》
Sale price¥6,980
【11/2 22時販売開始】《限定8石》コロンビア産マンゴークォーツ（最大60ct含む,平均21.6ct）《複数購入割引有》
Sale price¥1,980
![[On sale November 1st at 10 PM] [Limited to 12 stones] Brazilian Indigolite Tourmaline Gacha Loose Stone (4x3mm, Oval Cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA230072.jpg?v=1761804822&width=4000)
![[On sale 10/31 at 10 PM] Limited to 10 stones: 0.20ct Yellow Diamond Loose Stone, Including Fancy Colors [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_64543983-1aef-497a-b59d-22c8da336a98.png?v=1761804115&width=2250)
![[On sale from 10/25 at 10 PM] Limited to 12 stones: Mexican Opal (Custom Faceted Cut) Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_563486d0-bfec-49f4-9cb5-32fe12701045.png?v=1761350349&width=2250)
![[On sale from 10/25 at 10 PM] Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/2025-10-258.06.34.png?v=1761347238&width=1250)
![[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_69e68b54-0eb4-42e4-9bf1-bd9f3830d208.png?v=1760920748&width=2250)
![[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA170328.jpg?v=1760920536&width=4000)
![[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010072_03ace85f-7297-4784-b894-a29098f147f9.jpg?v=1760749472&width=4000)
![[On Sale 10/19 at 10 PM] [Limited to 10 stones] Spinel Gacha Loose Stone, Including 1.17ct Bicolor Spinel [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/PA170079.jpg?v=1760746140&width=4000)
![[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/18_261a657f-9dba-46a6-9a8b-1805ad2c5b57.png?v=1760745196&width=4000)
![[On Sale 10/12 at 10 PM] [Limited to 15 stones] One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010261_a395415b-ed3a-4054-93e9-3ef1eec4d810.jpg?v=1757670251&width=4000)
![[On Sale at 10 PM on October 12th] Limited to 14 stones: One loose hot pink sapphire from Mozambique (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010380_b8f4e8df-e135-458b-8f10-fc4f411d34e2.jpg?v=1760236878&width=4000)
![[4 stones left] Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_bee5ee11-c26d-47e0-9e94-2c270bbdf768.png?v=1760169992&width=2250)
![[Available at 10:00 PM on October 12th] Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) Loose Stone [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_231273fd-13cc-4e42-8137-21a4a7b68f97.png?v=1743813632&width=4000)
![[On Sale at 10 PM on October 12th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.5-1.6mm, step cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010795_07720c8f-f8df-4c94-9f93-deb3d7382fb6.jpg?v=1760090374&width=4000)
![[On Sale 10/5 at 10 PM] [Limited to 11 Stones] Synthetic Moissanite Gacha 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite, Loose Stones Included [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_651faf70-f61a-4363-8c57-36a5e217dbd0.png?v=1759535374&width=2250)
![[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/15_dc816088-689d-48f9-a277-773d85ed082c.png?v=1759454434&width=1500)
![[On sale from 10/10 at 10 PM] [Limited to 10 stones] Brazilian Bicolor Tourmaline Loose Stone (Baguette Cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/14_15be1edf-3bee-4b6c-a802-65c04eb4d4a9.png?v=1759454008&width=1500)
![[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_02d2c005-b0b0-4bdb-b567-6788a4b464ec.png?v=1759967028&width=2250)
![[Available at 10 PM on October 5th] Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/11_68a1bbaf-11da-453a-b687-bb5d166e5fdb.png?v=1759451951&width=4000)
![[On sale from 10/5 at 10 PM] Limited to 9 stones. All stones come with a certificate of authenticity. One loose Zoisite stone (yellow, pink-brown, green, etc.). Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/8_c59ee992-4d3e-44ec-9288-7314d219d00f.png?v=1758897171&width=4000)
![[On sale from 10/4 at 10 PM] [Limited to 17 stones] Tanzanian Bicolor Sapphire Loose Stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010326.jpg?v=1759127192&width=4000)
![[On sale at 10 PM on September 29th] [Limited to 14 stones] Brazilian Dendritic Quartz Loose Stone (Average 7 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010182_dba92f7a-563c-4cb3-8248-3f75fd0cdc47.jpg?v=1759117806&width=4000)
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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 publishes "Gemstone Encyclopedia"
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.