Stone Natural Fossil Blue Fluorescence Amber From Indonesia [N2 Natural] - (Blue Amber) - Sumatra, (Raw Stone Approx. 18-28g [1 Piece])

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ---------------------------------------------------------------------- This is an unpolished raw Sumatra blue amber (amber that exhibits blue fluorescence). Typical Sumatra amber dates back to the Miocene epoch (approximately 23 million to 10 million years ago, with some variation in formation dates) and is famous for its distinctive blue fluorescence. This is thought to originate from the resin of an extinct tree species (Hymenaea protera). *As this is raw amber and has not undergone jewelry processing, it may contain inclusions and rough areas (see images). The shape also varies, including elongated and thin pieces. *Since this is a random selection, if you are not satisfied, please contact us through your "Order History" for a refund. [Origin: Sumatra, Indonesia] [About Fluorescence] The fluorescent images were taken using a commercially available black light (UV-A, Longwave UV, around 365nm). Smooth surfaces mainly fluoresce in blue. The bluish-purple color in the images is due to the black light. *UV-A black lights, which emit less visible light, will make the illuminated object fluoresce more vividly. You can also make the fluorescence more noticeable by darkening the room and making the background black. *There are individual differences in the degree of fluorescence, and it also depends on the wavelength and performance of the black light you use. *A black light is not included with this product, so you will need to provide one separately. Sold by "weight" or "quantity". [The photos shown are examples only, except for "one-of-a-kind" items; you will not receive an identical item.] Please check the images or product name for approximate sizes. *The images shown may be larger than the actual size. *There may be individual differences between products. Also, as these are natural minerals, there may be cloudiness, dirt, scratches, cracks, discoloration, inclusions, matrix marks, etc. *Loose stone cases, storage boxes, instructions, labels, etc. are not included (they come in eco-friendly packaging to protect them from damage). To find all N2 stone Natural-related products, please search for "N2 stone Natural". "N2 stone" is a registered trademark of N2 (N2 Co., Ltd.). ● When dealing with products created by nature, we strive to provide accurate product information and faithful product images. [Regarding product images] Due to differences in shooting environment (lighting intensity, color temperature, etc.) and the customer's viewing environment, as well as differences in computer environments, slight variations in color tone may occur. Additionally, since we photograph in brighter environments than usual, the colors and iridescence may appear more vivid. We also adjust the angle of the light, especially when photographing iridescence. Some minerals, such as fluorescent minerals and microminerals, are photographed in special environments and with specialized equipment. [About the products offered] There may be individual differences between products. Also, as these are made from natural materials, there may be cloudiness, scratches, cracks, inclusions, etc. Because the quality of products created by nature is not consistent, we select products that are suitable for sale while allowing for a certain range of quality. However, there may be cases where the standards of humans judging quality do not match those of our customers. If you are not satisfied, please return the item through your "Order History." We will handle the return honestly in accordance with Amazon's policies.