writing

Although I personally don't like unneeded commas, you might feel a comma after the introductory clause was appropriate.
(after "much"). Otherwise, it is OK.

Although I rarely pass up the opportunity to insert a comma, I would leave the sentence as it is .

I don't find "putting diamond earrings into her ears" is the most natural way to see this. Perhaps simply "put on her diamond earrings." I had the silly picture of someone stuffing earrings into her ear canal.

And while I usually find myself in complete agreement with Wilpeter, in this case I can't find placing a comma there to be an improvement.

Blue JayI would leave the sentence as it is

Of course. Who puts a comma between "so" and "that" in a "so ... that" construction?

?Steve was so excited, that he ran into a wall and broke his nose.
?It was so hot, that even the robins were buying ice at the supermarkets.
?Sister Lucinda was so tall, that she had to stoop to enter St. Peter's ca

For the record, I did say I don't like commas where they aren't needed.
This was definitely one where I should have stuck to my rule.
And as far as putting earrings in one's ear. Men and women put them through their noses, so I wouldn't be shocked to see one in the ear. (I wear hearing aids in mine.)
Sorry for the misunderstanding.