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What are investment diamonds?


Diamonds represent a long-term, conservative and safe form of saving. They can withstand economic crises, currency instability, their ownership is anonymous and they are an ideal way to provide for future generations.

A diamond is classified as an investment based on internationally established rules, with the basic criteria being the weight of the stone from one carat upwards, followed by an assessment of its colour and clarity.


How to shop

Above all, safely! It is necessary to choose a prestigious and reliable dealer with a good reputation, who is able to prove the origin and, above all, the proper certification of the diamonds. The most stringent is that of the Gemstone Institute of America (GIA), but we also use other top certifications such as HRD or IGI. All ALO Diamonds diamonds are internationally certified.


Parameters of investment diamonds

To be considered as an investment, diamonds must have the best possible parameters, the so-called 4Cs - clarity, weight, colour, cut. Other indicators that affect the price of diamonds are proportions, workmanship, fluorescence, symmetry, type of certificate and origin of the stone. The rarest diamonds are the clear ones, but diamonds naturally coloured pink, blue, red or green are also of great value. Of course, a perfect cut is also important, and in terms of shape, round diamonds have the greatest investment potential, as their price is proving to rise the fastest.

The world standard for diamond grading is referred to as 4C.


The weight of diamonds is given in carats (1 carat = 0.2 g). Small diamonds are much more common in nature, therefore the price of a diamond of a larger weight, all other parameters being equal, is multiplied. On the other hand, a smaller stone of higher quality may be more valuable than a larger diamond with significant flaws.


A colourless diamond is considered perfect. It is best at breaking up incident light and producing iridescent flashes, called fire. Most natural diamonds contain coloration caused by tiny impurities within the stone. The exception is naturally colored diamonds, where the coloration is desirable.


Almost all diamonds contain minor imperfections - microscopic scratches or traces of other materials. A "flawless" stone is usually considered to be one that has no external or internal visible blemishes at 10x magnification. Absolutely flawless diamonds are extremely rare.


The cut determines how a diamond will reflect light. The better the cut, the more the diamond sparkles. A perfectly cut diamond sparkles all over, plus it produces iridescent flashes that are created by the light reflecting off each other's faces.


Colored diamonds as an investment

Colored diamonds are the rarest, as their value has been increasing multifold over the past five years. Red, pink and blue diamonds represent a rare colour trinity, where even a minimal difference in saturation makes a dramatic difference in price. As the production of exceptional coloured diamonds represents only a fraction of a percent, their price has been rising exponentially over the past decades.

ALO diamonds is one of the largest manufacturers of investment jewellery in Europe. The company has a tradition of more than a quarter of a century, having been founded in 1995 by jeweller Alojz Ryšavý. ALO diamonds was the first company from the Czech Republic and Slovakia to start trading on the world diamond exchanges in Antwerp, Israel and Hong Kong. It has a dominant market position in both countries, with ten luxury boutiques and an eleventh opening in 2022 on the prestigious Pařížská Street in Prague.