@lotalyss thank you. The weight will depend on what material you order it in. All materials can be found here, https://www.shapeways.com/materials.
Select the material you want, scroll down to Technical Documents, and open the Material Data Sheet PDF. I had it printed in Strong and Flexible Plastic which has a density of 1.02 g/cm³, multiply that by the volume of the pendant which is 2.4191 cm³ which gives you about 2.46 grams, roughly. Different materials will of course give different weights. Sorry it's so complicated, hope this helps anyway.