Custom Made Jewelry Handcrafted –Gemstones

Tanzanite : the origin of its price

Tanzanite stone is not a precious stone, within the meaning of French law, which only considers diamonds, sapphires, rubies and emeralds as such.

However, the price of Tanzanite stone makes it a gemstone in its own right :

  • it is rare in geological sense (1000 times rarer than diamond)
  • it has exceptional blue / violet colors
  • it is in great demand in jewelry
  • we are already talking about the closing date of the only production mine

To better understand the fascinating history of this stone, we invite you to dive into the origins of its discovery.

Tanzanite ring

October 28, 2021 — Hugo Maherault
Tags: Gemstones

Fire opal : iconic Mexican stone

Intriguing and mysterious, opal stone fascinates, on the one hand because of the multitude of colors and splinters it may have, but also because it remains a stone difficult to pin down by scientists and gemologists .

It is surely one of the few gemstones still being studied and the subject of theses to understand the chemical and granular composition, explain its lights and its mechanism of formation.

fire opals

October 03, 2019 — Hugo Maherault
Tags: Gemstones

Lapis Lazuli Stone

Lapis lazuli is a stone used for more than 7000 years in many artistic fields such as painting, sculpture, jewelery, ...

Its name of ultramarine blue is given to it since 5th century in Europe when one spoke about this rare and precious blue come from beyond the seas.

Lapis lazuli stone

Its name comes from the Latin "lapis" which means "stone" and Arabic Andalusian "azul" itself from Persian "lasaward" which means "blue".

Here is a short summary about lapis lazuli and its geographical and historical journey :

September 12, 2019 — TRANCHANT NICOLAS

Black diamond : a price equal to the mystery of its origin

Black diamond is also called Carbonado.

Black diamonds are much older than white diamonds or colored diamonds on earth, but their discovery is recent since it dates from the mid-nineteenth century (find out more) and the interest of the public and jewelers is even more.

First black diamonds were used in jewelry in the twentieth century only and it's only very recently that they have really started to gain value in the gemstone market.

Black raw diamond

If the process of diamond formation is well known and understood by scientists and gemologists, the origin of black diamonds is still surrounded by mysteries.

Indeed, white and colored diamonds (there are blue, yellow, green and pink diamonds ...) are formed in the bowels of the earth under conditions of very high temperature and pressure, between 150 and 250 kilometers of depth in the Earth's mantle.

Therefore, only volcanic eruptions are likely to "bring us" these diamonds to the surface. This is why diamonds are always associated with kimberlite, a volcanic rock.

Rough black diamonds are found outside volcanic rocks, and black diamond mines are scattered on Earth, so the most recent scientific theories place the formation of black diamonds in space.

They would have arrived on Earth brought by meteorites during the formation of it it is more than 2 billion years. Read this article to learn more about the subject.

The two main sources of black diamonds in the world today are Brazil and the Central African Republic, formerly stuck together when only one continent, the pangea, emerged from the waters 200 million years ago. (Jurassic era).

August 07, 2019 — Hugo Maherault

Men's black onyx rings

Onyx stone is a fine stone that is neither rare nor precious, yet onyx is the most popular stone for making men's signet rings.

Much more than the signet rings with amethyst stone or turquoise.

As you certainly know, signet rings are the type of men's favorite ring. From a massive historical heritage, they give volume allowing all forms of customization possible.

We present here various achievements of men's signet rings adorned with a natural onyx stone.

intaglio onyx cross silver ring gold and diamond ring with black onyx stone
April 16, 2019 — Hugo Maherault

Mexican turquoise jewelry

The Indians of pre-Columbian America are known for their religious artifacts, sculptures and turquoise jewelry.

It is believed that it was the Toltecs who developed and controlled the turquoise stone trade in the area that was later to become Mexico.

All Amerindian civilizations have either rubbed shoulders with each other, or succeeded one another, so that there have been enormous influences from one to the other of these civilizations.

Which, throughout Mesoamerica, lead to the manufacture of jewelery, works of art. craftsmanship using turquoise, a stone considered precious by the Aztecs, Mayans and Toltecs, who valued it more than gold.

Read this interesting article on cultural exchanges between Amerindian civilizations.

January 01, 2018 — Hugo Maherault