Speaking from experience, to tell her to wait to give it to when she is older or show them the little girl and then put away. When I was younger my grandmother gave me a very nice jewelry, but because I was so young, I lost all this! My grandmother hit a lot of that loss, but again, I was too young to be given something so precious.

So tell her to wait.

It would mean more to a few years anyway, when you understand what they mean. Give it to her now, and will think it is enough and then move on.

It is too small to be a gift, but way too small to be worn every day! My 8 year o.

The daughter has already relics, but I keep them in my place, and jewelry is allowed only to wear, and the same with me in special cases.

Ask your mother to write a letter explaining why it is so special to keep the box together, to get them familiar with the history and importance of the prize as most important. However, I feel more important point is that time is growing and really appreciate.

I do not think there is something wrong with your grandmother who want to granddaughter gift with such a precious heirloom.

It does not mean the little girl would wear. I mean, could have before the photo wearing a shot in the head, it could be arranged outside until a mature and responsible to care for them properly by itself.

After all, your grandmother was a child the same when she had the earrings. . . Just my opinion. Btw, is 8 years old your daughter? is it still relevant? if not, well then that changes things. . .

If g-ma wants to be them, that's fine. Just to be locked in a safe place until you are an adult and able to appreciate.
  These are valuable and insured.

How well have value, are problems just play jewerly, if not wouold grandmother have given something in order to keep them in and told her to keep them safe. . . . . . . . . . . . . . . . . . .
  But the grandmother giving away of possessions? Is that ok

My daughter is 8, too, and I want to get some earrings with diamonds, perhaps small, but would never give the earrings were the heirlooms until she was older.

Ask whether it will complain when lost.

ebay