










Sea blue chalcedony 5.627ct loose
Chalcedony is made up of fine quartz crystals. It is characterized by its various hues such as red, green, blue, light blue, and brown, and it is also famous as the favorite jewel of the famous maison jeweler Van Cleef Arpels. This is chalcedony that has been colored.
・Type: Loose (natural stone)
・Stone name: Sea blue chalcedony
・Weight: 5.627ct
・Scratch/chip: S
・Inclusion: -
・Note: Coloring treatment using pigment is performed.
*Coloring has been applied to make it more colorful.
・Accessories: Karatz quality guarantee card, case
▷For more information about chalcedony
Chalcedony characteristics, types, fakes, etc.
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
*If paying by credit card, the security company may contact you to confirm your identity.
karatz_item_id: 12538073
・Type: Loose (natural stone)
・Stone name: Sea blue chalcedony
・Weight: 5.627ct
・Scratch/chip: S
・Inclusion: -
・Note: Coloring treatment using pigment is performed.
*Coloring has been applied to make it more colorful.
・Accessories: Karatz quality guarantee card, case
▷For more information about chalcedony
Chalcedony characteristics, types, fakes, etc.
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
*If paying by credit card, the security company may contact you to confirm your identity.
karatz_item_id: 12538073
Choose options





![[10/22, 10:00 PM Sale] <limited to stones> Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) <multiple purchase discount available></multiple></limited>](http://store.karatz.jp/cdn/shop/files/PA050720_0c803cec-809e-4351-8ed4-19b5405d1e2a.jpg?v=1791592314&width=4000)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA174421_dc4a654d-29d9-43bf-a171-6be9a21db408.jpg?v=1792208298&width=3443)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA174389.png?v=1792208709&width=4000)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1717.21.50_b5bd12df-a26a-4558-b937-050e8f74386f.png?v=1792225381&width=1256)


![[10/18 10:00 PM Release] Tanzanian Mandarin Garnet 4.5mm/0.529ct Loose Stone with Identification Report](http://store.karatz.jp/cdn/shop/files/PA161584_087bf08f-b8c4-4ad5-839e-853ddac9d8b6.jpg?v=1792157662&width=3280)
![[Ref: 12564456] Mozambique Aquamarine 0.837ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P9304778_1205a47a-754d-4e91-81eb-b5504df57807.jpg?v=1791985647&width=2889)
![[Item 12564407] Stibiotantalite from Afghanistan, 0.200ct loose stone](http://store.karatz.jp/cdn/shop/files/P9087102_156cecc1-8841-415e-947e-90507c14a237.jpg?v=1791932462&width=3296)
![[Item 12564406] Stibiotantalite from Afghanistan, 0.186ct loose stone](http://store.karatz.jp/cdn/shop/files/P9087172_7634593e-09c8-423c-a8d1-5fb037b38167.jpg?v=1791931980&width=3267)
![[Item No. 12564322] Burmese Red Spinel 0.176ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P9090184_9700c589-2ea2-4930-80df-edac6c0e1e4b.jpg?v=1791931653&width=2569)
![[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/PA056832_d8692e6e-41d7-484a-8fb3-f15f7831d546.png?v=1791931343&width=2289)
![[Item 12564624] Tanzanian Cobalt Spinel 0.094ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/PA056278_9e257c06-11b3-4bdf-9629-db55fd3ecd95.jpg?v=1791930983&width=2918)
![[Item 12564627] Bekily Blue Garnet (Color-Change Garnet) from Madagascar, 0.620ct Loose Stone](http://store.karatz.jp/cdn/shop/files/collage_66b45918-a745-4339-8b28-20879c90c42f.png?v=1791930312&width=2000)
![[Item 12564630] Black Sapphire 5.833ct Loose Stone](http://store.karatz.jp/cdn/shop/files/collage_5323eca5-42a7-4c5c-93bd-bc2b890eb781.png?v=1791928900&width=2000)
![[Item 12564325] Kenya Gold Sheen Sapphire (Star Sapphire) 0.477ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P9098894_9e71d12f-afda-46cb-99c2-1c15650319a3.jpg?v=1791805575&width=3070)







![[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)


![[Jeweler's Tools] Color change penlight loose set](http://store.karatz.jp/cdn/shop/files/P1010673_2976de1d-08ce-4d92-94af-524da4485c99.jpg?v=1725605083&width=4000)