Which is the most expensive diamond like Kohinoor

These are the most expensive gemstones in the world

How do you recognize a real gemstone? Can you name features that distinguish it from ordinary stones?

The expert recognizes gemstones by the classic color rendering and the color structure of the gemstones. Sapphires, rubies and Paraiba impress with their brilliant colors that immediately catch the eye and make up a large part of the value of a gemstone. Whether it is is a real diamond, can be found out with a simple test of the refractive power. To do this, take a sheet of white paper and draw a point on it. Now take the diamond and place it with the board - i.e. upside down - on this point. If you can't see the point, assume that you have a real diamond in front of you. The Refractive index is so highthat you cannot see through diamonds.

The hardness of minerals is determined internationally with the Mohs hardness, named after the geologist Friedrich Mohs. The hardness of the gemstones is graded on a scale from 1 to 10, with the minimum being counted as very soft and the maximum as very hard. Very hard gemstones such as ruby ​​and emerald (grade 9) or diamond (grade 10) can be tested by scratching glass with the tip. Real diamonds, sapphires or rubies are harder than glass and leave a line on the material. If the gemstones are not real, the tip of the stone will break off.

Do you have a certain favorite gemstone that you particularly like to work with?

My personal favorite is the royal blue sapphire. A special quality feature of these high-quality sapphires is that this rich full blue always appears in an intense blue tone even in daylight, in artificial light and even in candlelight. A lower quality sapphire becomes darker or almost black in artificial light.

Gemstones are said to have a healing effect. Can you confirm the acceptance?

Healing effects are here - like beauty - in the eye of the beholder. Some gemstones are said to have particular strengths. The amethyst is considered to be particularly balancing, the diamond as having a strong character and the tourmaline as a protector. If this effect has a positive effect on the wearer, I would like to support it.