An Astronomer's sacred diagram, depicting all that is, and was, and will be. A ring that lets you hold the universe in your hand.The journeys of distant stars are painstakingly plotted around your finger.3D printed in polyamide plastic.--- Size Guide ---Available in these sizes, please leave your choice during Etsy checkout.US size 6 ===> Small (EU: 51.9mm Circumference / 16.5mm Diameter)US size 7 ===> Medium (EU: 54.4mm Circumference / 17.3mm Diameter)US size 8 ===> Large (EU: 57mm Circumferenc