























[On sale May 22nd at 10 PM] Synthetic Alexandrite 4.3mm/0.379ct Loose Stone
Alexandrite is also known as "the king of jewels." Its color change from green to red makes it a mystical gemstone, often called "emerald by day, ruby by night." This particular item is a "synthetic stone." Enjoy the color change using a red color-changing penlight.
This is a 4.3mm round cut synthetic alexandrite, polished by Sri Lankan craftsman Mr. Sanje. It features a meticulous and well-balanced cut that minimizes color fading when viewed from the front. The vivid color change, unique to synthetic alexandrite, is also a charming feature.
・Type: Loose Stone (Synthetic stone, man-made stone, treated stone)
・Stone Name: Synthetic Alexandrite (Synthetic Stone)
・Weight: 0.379ct
・Size: 4.3×4.3㎜
・Shape: Round Cut
・Scratches/Chips: S
・Inclusions: S
・Remarks: ---
・Accessories: Karatz Quality Guarantee, Loose Stone Case (If it does not fit, a clear zipper case)
▷Jewelry Processing Available
If you would like jewelry processing, please order it along with your desired setting from the link below.
・【Choose Your Stone】Simple Order
・【Choose Your Stone】Semi-Order
※If you would like an image of the stone on a setting, want to discuss a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not eligible. Also, some stones may not be eligible.
※While we strive to ensure that the photos are the same color as the actual product, there may be slight differences due to lighting conditions during photography or your monitor environment. Also, some photos may be taken using a penlight.
※For details on scratches/chips, treatments, and inclusions, please see here.
※For other frequently asked questions, please see here.
karatz_item_id: 12562927
Choose options



























![[Restock on June 27th at 10 PM] Authentic Gemstone Encyclopedia 3D Stickers Vol. 1: The Big Five Gems](http://store.karatz.jp/cdn/shop/files/IMG_3658.jpg?v=1781061036&width=3384)
![[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_fbc9c12a-d5e0-4c94-9d20-bbfb36fad717.png?v=1781513378&width=3000)
![[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_1ee7abcc-c785-4fbd-899f-b5b6978964a7.png?v=1782794728&width=3000)
![[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_7372b521-c1f6-4b48-8378-4ef004170822.png?v=1782796302&width=3000)
![[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_b55eecef-85e7-452d-8e9b-0c3480fd174b.png?v=1782796906&width=3000)
![[Awaiting appraisal] "Sourced in Hong Kong - Limited 8 stones" Afghanistan Green Hauyne Loose Stone [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/collage_b5c226ed-0d3a-47fc-886d-8a1b5cfbbab5.png?v=1782718065&width=3000)
![[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/50_28755117-0a9d-4247-82f9-d24573a88140.png?v=1782350508&width=2268)
![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/51_69f45db0-6569-4905-b7e3-c9430e518415.png?v=1782351935&width=2268)
![[Sales start 10 PM on 6/26] Limited to 30 sets: 1 in 10 is a pair of 2 stones - Zambian emerald loose stone (approx. 6x4mm, emerald cut) with deep color. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_7d2f620b-700f-46fb-846b-e73a39606c51.png?v=1782813430&width=3000)



















![[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)