If I buy more than one pair, will there be just one shipping charge?

Hi, we have no right to see the shipping charge, but you can try to know the shipping charge. For example, you choose one pair and click "Buy Now". Before paying, you will see all the fees（Tip: Mustn't pay during this step）. Then back, you can choose more than one pair and click "Buy Now" for knowing all fees. Thus, you can compare and know the situation of shipping charge.

I have lost the rubber backing. Can the seller send me a new one??

You need to email the seller. You will not get a response Here in comments I just bought a box with 200 rubber backings for 3$ here on amazon. Or go to Walmart and ask the jeweler. They’ll just give you one

How are the pearls attached to the silver base?

The pearls are drilled to be embedded to the bead cap with headpin in the middle, and glued for reinforcement.

How are the pearls attached to the silver base?

The pearls are glued into place. Very secure. I have been wearing mine every day for weeks. So comfortable, I have even slept and showered with them on. I love them, and would totally recommend them to anyone interested in the perfect every day pearl earring.