Put a little hartshorn into a saucer; dip into it a clean, soft rag, from an old cambric handkerchief. With the rag, go carefully over the jewelry, on both sides. Then dry and polish, with another bit of soft rag; and, finally, with a soft piece of old silk. Precious stones, mosaics and cameos may be cleaned in this manner. To brighten pearls, tear off a small bit of pin-paper, (such as rows of pins are stuck in,) roll it up, and, with the end of the roll, rub each pearl, separately; renewing the paper frequently.
The application of hartshorn, rubbed on with the finger will generally remove the stain-spots that are sometimes found on new silk, and on new kid gloves. There are few stains, indeed, that may not be obliterated by hartshorn. If too strong, dilute it with a little water. Pour out, into your saucer, but very little hartshorn, at a time, as it evaporates almost immediately.
Reddish stains, on black silk, or worsted, can, almost always, be removed by hartshorn; and the original black colour will immediately re-appear.