18k solitaire heart diamond woman's ring - STL

详细信息

Hi,
I need a STL cad file made up for a woman's 18k solitaire heart shape diamond ring. This will be printed and cast to make the ring.
It will be made in 18k gold, total final weight: no more than 3.2 grams (without diamond)
The heart diamond is 0.3 carat, approximately: 4.5mm x4.5mm x 2.6mm depth
Diamond should be set with a 3 prong setting.
The shank should be approximately 1.8mm in thickness.
Size of ring should be ring size UK: L
Diamonds:1 x 0.3 carat heart diamond (4.5mmx4.5mm.2.6mm)
CAD should look like attached images.