It is a glass pendant designed by melting a heat resistant glass called boro silicate glass with a burner and having a three-dimensional geometric pattern. The color of the pattern in the glass was expressed by the color which baked gold and silver on the glass. The brightness changes depending on the viewing angle and the light source. A glass work that shines beautifully when a three-dimensional geometric pattern hits the light. There is a video of this work taken with a smartphone. I hope you can confirm it in the video. https://www.youtube.com/watch?v=Q-fx_zCGwpE The heat-resistant glass is melted by the oxygen burner which becomes more than 2000 degrees using oxygen, and it is only one glass pendant made by hand. The heat-resistant glass used for the material is hard and has high transparency and is beautiful compared to general glass. It is anti-oxidative and is resistant to discoloration and deterioration, and is lightweight. It is a glass mainly used in the fields of science and chemistry and optics. I will deliver in the same state as on the image with a string. It is a black string of three twists (from Mitsu) The cord length is adjustable. The work image is an image taken outdoors in fine weather. It is handmade and carefully manufactured, but please understand that it is not perfect circle, sphere, or symmetry. We do not accept returns for design etc. Please check the image and feel free to contact us if you have any other questions. Since this is a glass material, please handle it so as not to give an impact that may cause scratches or cracks. Size of work Vertical (including the string through portion) about 3.3 cm Width (maximum point) about 2.7 cm Thickness about 1.8 cm. Weight about 16 g (including the string portion) The packing condition at the time of shipment is shipped in a simple packing condition with emphasis on safety. For international flights, we will ship by the shipping method called "International e-packet". It is safe because it is a delivery service that delivers directly to the purchaser by hand with a guarantee. In countries in the Asian region, goods require approximately one to two weeks from shipment to arrival. (Delivery period is a guide.) Due to the delivery situation in Japan and your country, delivery time may be over 2 weeks. ※ Please confirm the shipping information when purchasing. If the buyer's shipping address is incorrect, it will be returned to my address. In that case, you will have to re-deliver. In the case of resend, we will charge the buyer the shipping cost. There are times when the shipping information is often mistaken for the person who makes the initial purchase on Pinkoi. Please confirm the shipping information when purchasing. Please feel free to contact us if you have any questions.