




























[Available 10/4, 10 PM] Mongolian Color-Change Andesine 7.1mm / 1.416ct Loose Gemstone
Andesine is a rare stone named after the Andes Mountains. While not widely known as a gemstone, some rare specimens exhibit a color-change effect similar to alexandrite. It is a wonderful addition to any collection. Please enjoy the color-change effect by using a red-spectrum color-change penlight.
This Mongolian-origin andesine has high transparency and is so clear that it is difficult to spot any inclusions even under a loupe. It has also been cut with meticulous attention to detail, allowing you to enjoy its beautiful brilliance.
・Type: Loose stone (Natural stone)
・Stone name: Color-change andesine
・Weight: 1.416ct
・Size: 7.1×7.1mm
・Shape: Round cut
・Condition/Chips: S
・Inclusions: S
・Notes: Generally, diffusion treatment has been applied.
*Color-change andesine is a gemstone that typically undergoes diffusion treatment.
・Accessories: KARATZ quality guarantee, loose stone case (or a clear zip-top bag if the stone does not fit)
▷Jewelry Customization Available
If you would like jewelry customization, please order from the links below along with your preferred setting.
・[Select from Stone] Simple Order
・[Select from Stone] Semi-Order
*If you would like an image of the stone placed on a setting, wish to discuss a fully custom order, or have any other questions or concerns, please feel free to contact us here.
*Raw stones are not eligible. Additionally, some stones may not be compatible with customization.
* While we strive to ensure that the colors in our photos match the actual products, the appearance may differ slightly due to lighting conditions during photography or your monitor settings. Some photos may also have been taken using a penlight.
* For products featuring UV fluorescence photos, the images were taken using a 365nm wavelength blacklight. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weaker or be difficult to observe. The blacklight used by our store can be found here.
* For information regarding scratches, chips, treatments, and inclusions, please see here.
* For other frequently asked questions, please see here.
karatz_item_id: 12564383
Choose options



![[10/ 22:00 Sale] 《Limited to 15 Stones》 Rare Stone Gacha 《Multiple Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_050a75e9-20d3-45c3-b236-bae30a97bc35.png?v=1792237901&width=2000)
![[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/2026-10-2411.43.20.png?v=1792809832&width=1245)



![[Available from 10/22] <<limited to stones>> Tanzanian Winza Sapphire, Avg. 0.47ct <<multi-purchase discount available>></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_3491990c-c886-4740-824c-edc3c5228775.png?v=1792227669&width=2000)


















![[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)