This artwork beautifully captures profound symbolism! 
The snakes depicted around the glass represent the ouroboros cycle, and the process of the infinite cycle of destruction and rebirth we attain in our lives in order to achieve refinement in ourselves as an individual, and a loved one. 
 
The arms are a mix of the dead and the living, representing the strength and support that the ones that we have lost continue to give us even in their absence, and how we continue to carry their legacy and strength in the physical world. 
 
The blood in the hourglass signifies the fact that nothing during our time on this world can be achieved without blood and sacrifice. And we give our blood for those we love. 
 
The night and day cycles show the timeless nature of these virtues and how they will never cease as the sun changes to the moon and back again. 
 
The hourglass, a poignant central element, encapsulates these aspects within individual lives, emphasizing the diverse paths and experiences that, despite their uniqueness, share a common thread.