If you are endowed with a healthy dose of curiosity, you will love precious stones. Each one conceals its own unique secrets, secrets the stones can be coaxed into revealing. Before Mother Nature creates something so beautiful, numerous coincidences must first occur deep within the earth. Natural forces such as high temperatures and extreme pressures can transform ordinary substances into precious crystals. Though created under the most arduous conditions below the surface, each crystal still faces a long journey to become a polished stone and an eye-catchingjewel. Diamonds are prized because of their lack of colour, but the appeal of coloured gems lies within their infinite variety of hues. Whether in delicate pastels or vibrantly lush tones, they lend wings to their beholder’s imagination. Do you prefer the yellowish green of lemon citrine, the mysterious purple of amethyst, or the fiery gleam of imperial topaz? Decide for yourself which stone is your favorite - and become part of a never-ending story. In addition to gemstones’ rarity and naturalness, it is also their longevity that has perennially bewitched their beholders.
Knowledge about precious stones has many facets.
It is not easy for the inexperienced to correctly appraise the value of coloured gemstones. Even specialists require years of practice and a trained eye, especially since there are no standards as for diamonds. On the following pages, we would like to introduce you to the most important quality criteria such as colour and transparency. The value of a gemstone is further augmented by a combination of beauty and rarity. A perfect example can be found here in the neon blue colour of this paraiba, a member of the tourmaline family.