It takes couples of days or even weeks to manufacture a handcrated ring by a skilled artisian.
The minute detailings and fine engravings needs perfection and patitence along with time.
Generally it takes two days to make a Generic design ring but a designer Gem stone ring may take weeks to manufacture them.
Firstly a cads file is prepared containing a 360 degree layout of a ring.
Then the appropriate metal is chosen for strength and brightness.