UPDDATE: The pink version in the photos is similar to what I purchased, but not exactly the same, and I paid only $25.

WARNING TO GUYS
18" may sound like a chain which will hang down to her navel, but it isn't, 18" is short for a pendant chain.  Whether it is too short or not depends on the woman, how she dresses, and when worn (day-wear or evening wear).  If she is a substantial woman, with cleavage, who shows it, and she is likely to wear the pendant for evening dates---you probably need a much longer chain. If you think you need a longer chain the best thing to do is to add an extender chain set (for $5 or $6) Such as&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Necklace-Bracelet-Extender-Set-Silver-Tone-3-Pcs-Total/dp/B000RZXSAM/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Necklace Bracelet Extender Set - Silver Tone - 3 Pcs Total</a>&nbsp;She may wear the heart only 1 day per year, but she will use the extender chains frequently.

The heart is glass, exactly as described, and appears in the photo. Too bad it doesn't look like garnet or another natural stone.  A darker (more garnet-like) glass would have been better.  Other reviewers describe it as "amberish" colored, which implies yellowish or brownish.  There is nothing yellowish or brownish about it.  The heart is red, it's just not deep rich blood red.

The metalwork with the marcasite is exquisite, if anything better than the picture.  The marcasite are tiny gemstones which are the same tone as the silver, but with mirror-like faces which sparkle--very nice!  The chain I received is different than the photo, and much nicer.  I suspect that the setting was intended to be used with a more expensive stone, to sell for several hundred dollars.

The heart is not as thick as it looks in the photo---but that is probably a good thing, since it is one-sided, it needs to lie flat.  The back is covered with silver "lace-work" but it is simple, not the elaborate detail of the front---again that's probably a good thing---the smooth silver is surely more comfortable against the skin.  Just understand that the pendant is one-sided.

You might want to consider the matching "oval" earrings, which in my opinion are more appropriate than those suggested by Amazon&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Sterling-Silver-Marcasite-and-Garnet-Colored-Glass-Oval-Wire-Earrings/dp/B0028N6Q82/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Sterling Silver Marcasite and Garnet Colored Glass Oval Wire Earrings</a>

> Click on Stoney just below the product title to see my other reviews, or leave a comment to ask a question.