I purchased this model expecting it to be ready for production and 3D printing, but unfortunately the files have many technical issues. After importing the model into professional jewelry CAD software, I found multiple problems that make it difficult to use in manufacturing. The geometry requires significant repair before it can be edited or prepared for production, so it is not truly "ready to use" as described. For jewelry professionals, please be aware that you may need to spend considerable time fixing the model before it becomes usable. The overall design looks good in the preview images, but the actual CAD quality does not meet my expectations for a paid production model. I hope the seller can improve the file quality and update the model in the future.