What is the Difference Between Amethyst and Alexandrite?

Amethyst and Alexandrite are two distinct gemstones with different properties and characteristics. The main differences between them include:

1. Color: Amethyst is typically violet in color, while Alexandrite can range from red to green, with color-changing properties.
2. Composition: Alexandrite is a variety of the mineral chrysoberyl, composed of beryllium aluminum oxide. In contrast, Amethyst is a naturally occurring quartz.
3. Hardness and Durability: Alexandrite is harder and more durable than Amethyst, with a Mohs hardness scale rating of 8 to 8.5, while Amethyst scores 7.
4. Specific Gravity: Alexandrite has a higher specific gravity than Amethyst.
5. Size and Rarity: Alexandrite occurs in smaller amounts, with the largest cut Alexandrite weighing around 70 carats. Amethyst, on the other hand, can be found in larger crystals, with some cut gemstones weighing over 200 carats.
6. Symbolism and History: Amethyst has a rich history and symbolism, connected to royalty and spiritual properties. Alexandrite, discovered only about two centuries ago, does not have as extensive a history or folklore.

In summary, Amethyst and Alexandrite differ in color, composition, hardness, durability, size, rarity, symbolism, and history. While both gemstones are used in jewelry, their unique properties make them distinct and appealing to different preferences.

Comparative Table: Amethyst vs Alexandrite

Amethyst and Alexandrite are two distinct gemstones with some differences and similarities. Here is a table comparing their key properties:

Some similarities between Amethyst and Alexandrite include their color, luster, clarity, and streak. Both stones have a vitreous luster and are transparent to translucent in terms of diaphaneity. They also both leave a white streak when turned into powder and have inclusions due to the presence of other minerals in their composition. However, Alexandrite is a rarer and more valuable gemstone, known for its unique color-changing properties.