This pendant presents fairly well on first glance, with a nice design, but I looked at it through a 30X jeweler's loup to assess the workmanship.  There is one diamond, and even with a loup, you are going to have to hunt for it; the color is decidedly yellow, notwithstanding Amazon's description as white.  In checking the large facets of the marquis-cut gems, they are smooth with the exception of one periodot, right in front, which has some gouges.  From a distance, these are not noticeable, but if more than one stone had been in this condition, I would have returned the necklace.

The back of the bale is marked "China 925" with a jeweler's mark; the bale is fairly large, will come off the necklace and would go on another chain very easily.  The reason this is important is because in my opinion the pendant is somewhat too heavy for the chain.  The necklace is marked "925 Italy" with the same jeweler's mark; the box chain is very fine, and I intend to wear it separate from the pendant or with a lighter pendant.

As to the gemstone colors, the garnets are darkest, with a lovely reddish brown hue.  The citrines have a true golden shine.  The peridots, my birthstone, are a disappointment in that they are a pale lime green.  The amethyst look light purple under the loup, but looking at them straight on, they have pink tones, resembling tourmaline.  The blue topaz are washed out to the point that they are almost unnoticeable and remind me of aquamarine.

What drove my rating down from a three to a two was the price.  Taking into account the flimsy chain and gemstone colors, plus what I have seen in stores, I personally think that this piece is worth more like $25, not the current price of $54.