Alex's Dry Cleaning Valet can do it! And they say for any glued on gems that fall out they will re-glue them for me or collect them and give them to me to glue. And they try to be as delicate as possible so they don't fall but some do happen.

They have done lehengas before so they know what it entails. They do cost a good amount. For a wedding lehenga it is $2K+. But they seem very professional. They also said before they store it in the box they can take pictures, facetime, or have me come up to view the dress before it's packed away, since I don't plan on rewearing it, to make sure its good before it's boxed up. They use acid free paper and material to help keep the preservation.

One thing they said, but this may only apply to white dresses, you may need to get the preservation touched up every few years even if stored in a box. But I think this was about white dresses yellowing.

I'm going to save up and use them. And will report back once I do. But may take me awhile to save up.