The Imitations of Diamonds (Second part)

In the mid-1970s, zirconium oxide (ZrO2) was produced in Russia, specifically at the Lebedev Physical Institute in M…

The Imitations of Diamonds (First part)

I believe everyone agrees that imitation constitutes, in a certain sense, a certificate of esteem.
As we well…

The emerald

The emerald
It is not exactly certain but the emerald seems to owe its name to the ancient Sanskrit term &quo…

A special ring

Some time ago I purchased a lot of just over twenty rings from a rather well-known auction house specializing in the…

The Ruby

After the diamond, the stones that we associate, more than any other,  with the goldsmith's art, that we ex…

THE MYTH OF THE GOLDEN FLEECE

If the character that mainly defines the myth is remoteness, even if not always necessarily chronological, its funda…

THE DIAMOND

“Maximum in rebus humanis, non solum Inter gemmas, pretium habet adamas.” If already in the first centur…

GOLD

Gold has always been, since time immemorial, considered by man as the most precious of metals. It was the first meta…