Buy Alexandrites

The most characteristic feature of an alexandrite gemstone is its iridescence, which means that it appears a different color depending on the lighting. While it appears emerald green to bluish green in natural daylight, this changes in artificial light or candlelight. The alexandrite then changes to its complementary color and takes on a ruby ​​red, raspberry red or purple appearance - the technical term for this phenomenon, which also gave rise to the description " emerald by day and ruby ​​by night ", is pleochroism . Deposits of chromium are responsible for its formation. Unfortunately, alexandrites in which this effect is strongly pronounced and which have an intense iridescence are extremely rare. The first alexandrite deposit, the one in the emerald mines in the southern Ural Mountains, which was discovered in 1830, was a source of these rarities; however, it was exhausted within a few decades. In alexandrites from other regions, such as Sri Lanka, the iridescence is not as significant; there is merely a color shift between blue-green and violet. Fortunately, however, in 1987, a new source of very high-quality alexandrite gemstones was discovered in the city of Hematita in the Brazilian state of Minas Gerais.

Alexandrite is a variety of chrysoberyl, which, with a Mohs hardness of 8.5, is considered the third hardest mineral. Many alexandrite gemstones contain inclusions, but these do not diminish their value. Quite the opposite – they are proof that this is a unique natural product. Nevertheless, alexandrite gemstones that are as transparent and translucent as possible are sought after.

At RENÉSIM, you can purchase Alexandrites either as a loose gemstone or combined with a beautiful piece of jewelry. Simply choose your favorite from the wide variety of Alexandrites. We offer a variety of cuts—such as round, oval, marquise, and many more—as well as carat weights and qualities. For example, would you prefer a 1-carat Alexandrite in a beautifully unusual marquise cut or perhaps a more captivating emerald cut? Let yourself be enchanted by other colored gemstones at RENÉSIM. Whether it's aquamarines in seawater blue or a sapphire-blue tanzanite with purple reflections—you're sure to find your favorite gemstone.