How to Evaluate and Choose the Perfect Amethyst Gemstone


The birthstone for February, amethyst is a quartz. It owes its beautiful violet-purple color to its aluminum and iron impurities. Its color ranges from pale violet to deep purple and can sometimes have a red tint. Another important aspect about its color is that it is known to have color zones. That means that certain areas of the stone have deeper hues while others have paler areas. This and other factors affect its value.

Thus,we can say that each gemstone is unique.

Place of Origin

Amethyst is a gem that is found in abundance. Many countries such as Canada, India, Mexico, Russia, and the United States have significant deposits. Zambia is known for its high-quality amethyst. These have been known to have a blue hue which is very attractive. The most important source, however, is Brazil. Not only does it have plenty of amethyst, but also many amazing pieces have been found here. It is known for the high quality of its gems, which is why we at Geshia have made them our primary supplier.

Raw Stone-Amethyst


Generally speaking, amethyst is not enhanced in any way. Primarily because there is no treatment available but also because there is no need. As there are a wide variety and quantity of high-quality gems, it is not necessary. Some amethyst, however, is heated to remove its iron impurities. This changes its color and so the stone essentially becomes citrine.

How Amethyst Is Graded

The Cut

Amethyst Cut

The cut is important as it allows light to enter the stone and refract out appropriately. When amethyst is in question, there is some consideration when a jeweler decides a cut for the stone. Because it is known for color zoning the cut sometimes works to hide this flaw. While it may look interesting, it actually decreases the price. Also, the large quantities and sizes allow for a large number of high-quality cuts. These include heart, oval, round, emerald, and more. The cut affects the price simply by quality. A low-quality cut will lose some "points". The most popular cuts for amethyst are the Trilliant Cut and the Emerald Cut.

The Trilliant Cut was created in Amsterdam, Holland. This can be a traditional sharp triangular shape or a more rounded pyramid. It has a total of 44 facets. 25 on the crown, or top, and 19 on the pavilion, or bottom. Finally, the girdle, this is the "line" that separates the crown and pavilion, is polished.

The Emerald Cut is rectangular in shape. This cut is used only for stones with a superior clarity and the best color as it is the most revealing. This is because it has a large table, the flat top of the gem. Also known as a step cut the table is followed by steeped facets towards the girdle. These look like steps, thus the nickname. The pavilion also has this step effect towards the very bottom. All the facets are wide which would show any inclusions or color zoning. The Emerald Cut, used for centuries by the royalty and upper class, is also great for large gems.

The Clarity

The best amethyst is free from inclusions that are visible to the idea. The quantity again adds to the significance of this. As there are so many flawless amethyst gems available for sale, inclusions reduce the price of the gem. In some cases where the color is perfect, a few inclusions can be forgiven. For the most part, however, inclusions are not accepted.

Amethyst Color

The Color

The rule of thumb is simple. The more vibrant the purple is, the higher the price. Pale specimens often get a lower price per carat. For a high-priced gem, it also has to have minimal zoning. Or at least that it is not visible to the naked eye. While deep hues are applauded, dark colors are avoided. This is so because the darker purples will appear black in dim, artificial light.

The Carat Weight

The carat weight refers to the size of the gemstone. One carat is one-fifth of a gram. This is used to tie all the factors together and create the final price. The price per carat is multiplied by its weight for this. That being said, larger pieces are almost always more valuable. As there is an abundance of amethyst, large pieces are also often found. However, they are more appealing and thus more expensive.