


















[Koshu Precious Stone Kiriko] Colombian emerald 2.472ct 《Collaboration》 Loose (Checkerboard x Subaru) with patch
This piece features high-transparency Colombian emeralds, carefully selected from the emerald collection of Mr. Shimizu, the "Emerald Hunter," well-known from "Matsuko's Unknown World," and crafted into a Koshu Kiseki Cut by Mr. Yoichi Fukazawa and Shimizu Kiseki. It is a checkerboard cut × Subaru design. Colombian emeralds with transparency and size suitable for such a cut are extremely rare and will be difficult to acquire in the future.
A special emblem is included.
・Type: Loose stone (natural stone)
・Stone name: Colombian Emerald (Emerald)
・Weight: 2.472ct
・Scratches/Chips: S-A+
・Inclusions: A+
・Remarks: Impregnation with a colorless agent has been performed.
*Emeralds are generally gemstones treated with colorless agent impregnation.
・Accessories: Koshu Kiseki Cut card, Karatz quality guarantee, case
* While we strive to ensure that the photos display the same color as the actual product, there may be slight differences due to lighting conditions during photography, your monitor environment, and other factors. In some cases, a penlight may have been used for photography.
* For information on scratches, chips, treatments, and inclusions, please refer here.
* For other frequently asked questions, please refer here.
karatz_item_id: 12541331
Choose options






![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_f4ce5d64-8804-46cd-8a67-6e5dfa2be8a9.png?v=1785924412&width=4000)
![[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*](http://store.karatz.jp/cdn/shop/files/collage_07f6900d-fa8d-4bc4-acda-dc4cf0e8fed7.png?v=1785923452&width=4000)
![[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*](http://store.karatz.jp/cdn/shop/files/collage_ee8309d3-5bb0-4cb8-b162-fd9ce98dae4e.png?v=1785924238&width=4000)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_d85e6b2e-52be-4e3d-9b49-b7afa91b3f4d.png?v=1785987595&width=4000)
![【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate](http://store.karatz.jp/cdn/shop/files/P4085602_239fb724-e8c8-4f49-8fab-65e692522cdb.jpg?v=1785992300&width=4000)

![[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7313058_04b1c2a1-4e5e-48af-bd45-7d19df69c5ff.jpg?v=1785731873&width=2695)
![[Listed on 12563962] Madagascar Padparadscha Sapphire 0.314 ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7242073_bb1c6b45-7eec-4946-b9ae-cf987da714ae.jpg?v=1785731541&width=3012)

















![[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones](http://store.karatz.jp/cdn/shop/files/P4130575.jpg?v=1776126091&width=4000)