June's birthstone is either Pearl or Alexandrite, not Amethyst.
The people selling these "gems" have no idea what birthstones go with what month. Amethyst is the birthstone for February. "Light Amethyst" is not a type of stone, just a less valuable Amethyst. The June birthstone is Alexandrite which is so rare and costly that an accepted alternative is Pearl. (I have LOT of pearls.) Alexandrite appears either purple or green depending on the cut and the light and the setting. I didnt check their other gem offerings but I wouldnt depend on their accuracy.
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