How to choose a wedding ring? Which label ensure responsible jewellery? How to recognise a gemstone variety? Which criteria to assess when choosing a colored gemstone? We answer all of your questions and more to make this fascinating world more accessible.
How to distinguish the varieties of gemstones?
What differentiates one stone from another? What makes a sapphire a sapphire and a tourmaline a tourmaline? What makes them different? These are simple yet extremely important questions, and they are the basis of gemology. At f...Read more >
Where does the color of gemstones come from?
Precious stones have fascinated us for thousands of years, and a strong symbolism surrounds them. One element is particularly important: color. Thus we often speak of colored gemstones, like the stones we offer at Maison Alchim...Read more >
Methods of processing gemstones
Did you know that it is possible to play with the color of sapphire? If it is heated, a blue sapphire can have its color lightened or on the contrary accentuated. This is a treatment. Some stones are treated to improve their co...Read more >
How to choose an engagement ring ?
The engagement ring is a highly symbolic piece of jewelry, perhaps the most symbolic of all. It is the one you will give to your other half, traditionally at the time of the proposal. Your future wife will wear it for the rest ...Read more >
Precious stones have always been a vector of symbols and myths. From time immemorial, man has attributed to them a particular meaning, different for each stone, each culture and each era. The ruby and the sapphire have long bee...Read more >
The 4Cs: diamond classification
Diamond is the most famous gemstone, and one of the most storied. With a hardness of 10 on the Mohs scale, only a diamond can scratch another diamond - thus it is said to be eternal. It is the most widely used stone in jewelry,...Read more >
How to take care of your jewelry?
A piece of jewelry is a precious object, especially since it is often linked to a moment in life or to strong emotions. If they are carefully maintained, jewelry - especially gold jewelry - can remain in excellent condition for...Read more >
How to find your ring size ?
It is not always easy to find your ring size. Here are several methods to help you find your ring size. It is important to note that your ring size will depend on the finger on which you want to wear the ring. It is therefore v...Read more >
The long value chain of the jewelry industry
Raw stone, faceted stone, laboratories, treatments, jewelers, traders... It is not easy to find one's way through the value chain of the jewel industry. It is not easy to find your way through the jewellery industry's value cha...Read more >
The labels, the spearhead of ethical and responsible jewelry
Jewelry is linked to emotions and dreams, and increasingly wants to improve its social and environmental impact. Thus, organizations and labels have taken on the mission of making the entire value chain more responsible, from r...Read more >
Sphene is a relatively unknown stone with a yellow, greenish-brown or red color. With a hardness of 5 to 5 ½ on the Mohs scale, it is a rather fragile stone, whose use in jewelry is quite complex. Nevertheless, sphene has a ver...Read more >
Peridot is a gemstone that has been used for centuries. Thus, the most important historical deposit is that of the island of Zeberget, located in the Red Sea off Egypt. It was already exploited 3500 years ago. It is also on thi...Read more >
Some stones are emblematic of certain countries: we can think of the emerald of Colombia or the ruby of the Mogok valley in Myanmar. Alexandrite is one of these stones. Discovered in the Ural mountains in 1830, named after Tsar...Read more >
Chrysoberyl is a special stone. Its yellow to green color is due to the iron atoms present in its crystal structure. With a hardness of 8 ½ on the Mohs scale, it is a very resistant stone, particularly suitable for use in jewel...Read more >
Ruby, the king of gemstones
Among the colored gemstones, one stone stands out in particular: the ruby, the king of gemstones (from the Sanskrit ratnaraj). The ruby is linked to a strong symbolism and to many legends. Its blood-red color represents anger a...Read more >
Did you know that garnet can come in a wide range of colors? Often, only red garnets are known. However, garnets are a large family of minerals, with many different colored varieties: red pyropes, red rhodolites with a pinkish-...Read more >
Paraiba, an exceptional tourmaline
Tourmalines are fascinating stones of great richness. More than just a stone, they are actually a group of minerals composed of a large number of varieties. With a hardness of 7-7½ on the Mohs scale, tourmalines have very compl...Read more >
The Mohs scale
The hardness of a gemstone is an important data: it can for example influence the way it can be worked in jewelry. It is measured using the Mohs scale, established by Friedrich Mohs in 1812. This scale measures the scratch resi...Read more >
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