Thank you for viewing! 【Size】 Size 12.5 Measured with a dedicated tool. This is a ring made of borosilicate glass. Made with a special processing technique using heat-resistant glass, each piece is an original, one-of-a-kind design. Please be sure to check the photos. If you have any concerns or questions, please comment beforehand. Also, if you like it, please consider following me. #lampwork #burnerwork #glassart #tonbodama #tools #glasscraft #boroglass #borosilicateglass #glasswork #heatresistantglass