The carat weight

The carat is a unit of weight. It originates from the orient, where, in ancient times people used carob seeds to weigh precious stones.

The round, brilliant-cut diamond is the most well-known, and the best-seller. It represents 85% of the global market. It is composed of 56 or 57 facets.

The diamond is formed between 200 and 250 kilometres underground and carbon needs a temperature of approximately 1,500° and an atmospheric pressure of roughly 50,000 pascals for the diamond to crystallise. I like to say that the diamond blooms, yes, it blooms quite gently. According to contemporary knowledge, the oldest diamond was 3 to 3.5 billion years old and the most recent, 47 million years.

It is due to volcanic activity that elements at a depth make their way, little by little, to the surface. The kimberlite is a rock of volcanic origin which led to the rise of the diamond, and the most well-known, but there is also the lamporite which is found in Australia.

There are three main types of deposits:

  • Primary deposits: ancient volcanoes
  • Secondary or alluvial deposits: volcanoes that have been completely eroded and deposits are found in ancient river beds
  • Sea deposits

All our diamonds come with a GIA certificate (Gemological Institute of America)