There are many gemstones that come in shades of purple, including amethyst, lavender sapphire, and purple spinel. Here is some more information about these popular purple gemstones:
Amethyst: Amethyst is a type of quartz that ranges in color from pale lilac to deep purple. It is often associated with spiritual growth and protection and is said to have a calming effect. Amethyst is also the birthstone for February.
Lavender Sapphire: Sapphire is a type of corundum, which is a mineral made up of aluminum oxide. While sapphires are typically blue, they can also be found in other colors, including lavender. Lavender sapphires are often used in jewelry, and are a great alternative to amethyst.
Purple Spinel: Spinel is a mineral that comes in a wide range of colors, including purple. Purple spinels can be found in various shades, from pale lilac to deep, rich purple. They are relatively uncommon, but are valued for their beauty and durability.
There are also other less know purple gemstones such as charoite, Tanzanite, Kunzite, Lepidolite and many more.
It is worth noting that some purple stones can be treated or enhanced to achieve that color and it may affect the value of the stone. Always ask if the stone has been treated before purchasing if that information matters to you.