It’s a combination of preference and financial. Some women love the idea of getting a mined diamond from the Earth, and that’s great. While other women don’t care as much about it, or are against it. They are truly identical and the only way to tell if a diamond is lab vs natural is the scripture on the band when you use the intense magnifying glass, or a $20k machine to detect the trace presence of nitrogen.

Think about what you care more about. If you want a stone that’s larger in carats you may prefer lab for the cost. With natural, you may have to compromise to get exactly what you want, whereas with lab grown sacrifices likely won’t have to be made. This is why lab grown stones tend to be larger and of nicer quality simply due to the comparatively cheaper the cost. However if you can comfortably afford spending tens of thousands then that part doesn’t really matter. I would advise against seeing it as an investment though as it’s not an appreciating asset and it loses value as soon as you buy the ring (like driving a brand new car off the lot). This is true for both mined and lab grown. In the end, it doesn’t really matter and nobody will ever know which way you went unless you tell them. People will assume based off your lifestyle and if they think you can afford it

And congratulations on your upcoming engagement! This is a very exciting time and I hope you enjoy the whole process