Jewelly Design engineering / technical drawing

Hi! I Need a Jewellry Design in 3D - it should be a Collier or a ring or a pendant. You should use 1 Gems or more and it should be a "masterpiece" work! I will Need Pictures and engineering / technical drawing! It should have 1 bayonet catch or something like this .. and the gems should be to change with another gems (other Color). Hope you have understand me. Timeframe 1-2 days. If all is good, you will become 1 Job per week! maybe more... thanks! PS: I want that you Show me work of you - or a Picture if you have finish work wish you can sell me.... thanks!!