MIT's G3DP can 3D-print transparent glass of any shape
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Glass can be molded, formed, blown, plated or sintered; its formal qualities are closely tied to techniques used for its formation.
Now We can 3D Print the Glass. i-e Glass can be used as Ink in 3D printers instead of plastics
Researchers at the Massachusetts Institute of Technology (MIT) unveiled a first of its kind optically transparent glass printing process called G3DP.
G3DP is an additive manufacturing platform designed to print optically transparent glass.
https://www.youtube.com/watch?v=_Lx2loldi6o&list=PLK2ccNIJVPpB_XqWWq_oaZGIDzmKiSkYc
http://3dprint.com/90748/g3dp-glass-3d-print/