Not Like Other Topaz
While topaz today is mostly associated with the blue color, the gemstone comes in a variety of colors. The most precious of them is the intense golden, orange, pink, and reddish-pink imperial topaz.
What Makes Imperial Topaz Special?
The term "imperial topaz" is believed to have originated in 19th century Russia. The Ural Mountain mines are known for exceptional pink-red and golden stones. Back then, those gems were exclusively reserved for the royal family and the Czar. While anyone can wear the stone today, the name is still reserved exclusively for the rich yellow, pink, and peachy stones.
Another unique characteristic of imperial topaz is its pleochroism, meaning it can show distinctly different colors when viewed from different angles. The same stone can appear golden-orange from the top, but flash bright, pink tones at the ends. Common yellow and blue topaz do not have this optical property, making it a hallmark of true imperial topaz.
Imperial Topaz 101
Imperial topaz is a gemstone made of aluminum and fluorine. Most common topaz in its natural state is colorless. Trace elements like chromium, as well as structural defects are responsible for the pink and orange color of imperial topaz. Topaz has a relatively low refractive index, so a good cut is essential to make the gemstone look sparkly.
Common topaz is found in many places around the globe. It is mined in Pakistan, Madagascar, Myanmar, Australia, Mexico, and even in the United States (in Utah, Colorado, or Texas). However, imperial topaz is only found in a few places in the world. The Russian mines still produce gems today but most of the imperial topaz on the market comes from Ouro Preto in Brazil. Limited quantities of imperial topaz are occasionally found in Pakistan, Nigeria, or Madagascar, but they usually do not match the warmth and saturation of Brazilian material.
Is Imperial Topaz Rare?
Yes, imperial topaz is rare and highly prized. This is because it requires a very specific natural environment to form its rich color. Compared to any other variety of topaz, the price per carat is significantly higher.
What Should I Know Before Buying Imperial Topaz Jewelry?
Topaz is relatively hard (an 8 on the Mohs scale), but it is not a very tough stone. Just like diamond, topaz has a perfect “basal cleavage”, which means it can easily crack when hit on a hard surface, or at just the right angle. Hard, direct impact could cause the stone to split along its structural planes.
The vibrations of an ultrasonic cleaner could also cause the gems to split, which is why you should never use ultrasonic cleaners on any topaz. As is the case with most stones, the safest way to clean an imperial topaz is by using a soft damp cloth with mild soap, if necessary. Additionally, the heat of ultrasonic cleaners could further damage imperial topaz.
While it is generally color-stable in normal sunlight, extreme heat, sudden temperature changes, or prolonged exposure to intense, direct sunlight can cause the gem's vibrant orange, yellow, or pink hues to gradually fade by causing internal fractures. There is absolutely no risk with daily wear, but the structural defects that give imperial topaz its unique color can break down or shift when worn while tanning or at a sauna. This could make the stone appear dull, and no amount of cleaning will fix it.