boroccus opal & solid geometry inside out borosilicate glass pendant

Pendant made of borosilicate glass (heat-resistant glass) made by hand. A one-of-a-kind pendant with opal shining in a geometric blue three-dimensional pattern. When light shines on the glass, the colors of the pattern appear beautifully. When opal is exposed to light, it reflects light with a play-of-color effect. Transparent purple glass is used for the back side of the glass and the loop through which the string passes. The color is so dark that it almost looks like black. Glass with air bubbles is used between the pattern and the colored glass used on the back side. *Notes on design There are fine air bubbles on the opal surface. Although it is handmade and carefully produced, the shape and pattern are not perfectly symmetrical or centered. I also have a video of this work, so I hope you can check it out. https://www.youtube.com/watch?v=HY8P6t9xGYM The size varies depending on the work. Please also check the size. glass size Length (including string thread) approx. 3.3cm Width (maximum point) approx. 2.5cm Thickness approx. 2.0cm. Weight approx. 18g (including string portion) The opal used is an opal made with specialized technology that does not break even in a high temperature environment where heat resistant glass melts. This is a one-of-a-kind glass pendant made by hand by melting heat-resistant glass at a temperature of over 2000 degrees with an oxygen burner. The heat-resistant glass used as the material is harder and more transparent than ordinary glass, and is resistant to oxidation, discoloration and deterioration, and is lightweight. This glass is mainly used in the fields of physics, chemistry and optics. The string of the pendant will be delivered in the same condition as the product image. (This is a string made of black wax cord.) Since the string has an adjuster, you can adjust the length of the string by sliding the adjuster. The color of the cord can be changed to brown or navy. Please let us know at the time of purchase. The work images and videos were taken outdoors in a sunny environment. There is a possibility that differences in appearance such as color may occur due to the influence of the displayed device. We do not accept returns for reasons such as design. Please check the image and feel free to contact us if you have any concerns. Since it is a glass material, please handle it so as not to give it a shock that may cause scratches or cracks. International mail will be shipped by Japan Post International ePacket. Safe shipping method with tracking compensation We will ship in simple packaging that emphasizes safety. Delivery within Japan will be delivered by Yamato Transport Courier Compact. It is a delivery method that allows you to specify the arrival date and time. If you have any questions, please feel free to contact us.