Dolf put it very well indeed!
Kickstarters work best when they are for a specific "project" - like an exhibition, or an event.
Since you can make money selling your work on Shapeways, you can "fund" your jewelry line by just making it!
The greatest thing about selling on Shapeways is it allows you to test an idea without really spending too much money. Previously, you would have invested money to make a bunch of pendants, paid for a stall at a craft fair, and waited to see if people liked your designs enough to buy them.
With Shapeways, you can open a shop and test your products by using the power of the internet - you can advertise on Facebook (to your network of friends) and on Shapeways and if people like your work, they will buy it right on Shapeways, so you make money as you sell. If people don't like your designs, then they won't buy them, but you are not stuck with a bunch of pre-made stock.
The old adage of "you need to spend money to make money" is still true, as your shop will look better with photos of products rather than just renders, but now you can spend a bit less
Good luck!