Is the pendant solid sterling silver?

Yes. It is described as 925 sterling silver, which is 92.5 percent silver alloyed with other metals. It will tarnish over time and can be restored with a silver polishing cloth.

Does it come with a chain?

Yes. The necklace is sold with a chain included, so it is ready to wear or gift without buying a chain separately.

How big is the pendant?

The disc measures about 16 mm wide and 16 mm long, roughly the size of a small coin. It sits close to the collarbone rather than hanging low.

Can the pendant be engraved?

No. The "Mom" wording is part of the design, and nothing in the product details mentions custom engraving. Shoppers wanting names or dates should look at engraved pendants instead.

Is it a good gift for a mother?

It fits that use well: real silver, a clear "Mom" message and a chain included. Keep in mind the wording is fixed, so it suits mothers specifically, not other recipients.