Are you fascinated by stones and want to find out more?

Or you can quickly become an expert at finding THE engagement ringAnd you're under pressure to make your proposal a success? 

Our gemology glossary is designed to explain the most common terms related to the science of gems, and to help you recognize the different parts of a gemstone.

- Cabochon: A cabochon is a stone that is not faceted, but has a smooth, rounded appearance. All gemstones can be cut into cabochons.

- Crown (for a stone): Once the stone has been cut, the crown refers to the upper part of the stone, which includes the table and facets.

- Breech : On a cut stone, the breech is the lower part of the stone. It includes the pavilions and the tip of the gem. It's like the "submerged part" of the stone.

- Hardness : A stone's hardness is its resistance to polishing or engraving. It is measured on the Mohs scale, which ranges from 1 to 10. The hardest stone, and therefore the most resistant, is diamond, graded 10.

- Fire: This is the word gemologists use to describe a stone's brilliance.

- Gems: The distinction between fine stone, ornamental stone or precious stone is no longer in use, and the term gem corresponds to all stones whose appearance is considered pleasing, which have significant hardness and are rare. See our article on stones for more details.

- Gemmologist: A gemmologist is a specialist in stones, pearls and corals. Their training enables them to understand the geological processes that led to the formation of stones. The gemmologist knows how to differentiate one stone from another and identify whether it has been treated.

- Inclusion: This term refers to any material trapped inside a stone during its formation. This can be a liquid, another mineral, a gas, etc. Inclusions present in a stone enable the gemologist to determine the origin and conditions of a stone's formation. This is an important factor to take into account when assessing a stone's value. In the case of diamond, a stone with few inclusions, inclusions are a hindrance to its quality. Some stones, on the other hand, are naturally highly included, such as emeralds, so the presence of inclusions has little effect on their value.

- Lapidary: The person who cuts, shapes and polishes stones.

- Pavillons : Also known as breech wedges, pavillons are the facets on the underside of a cut stone.

- Table: The table is the largest facet of a stone, and the one that is highlighted when set. It is located at the crown.

- Cut (stone): The size of a stone is not a matter of size or smallness, but of shape: rather round, square, pear-shaped... It's the way it's cut by the lapidary. There are many different stone cuts. For diamonds, for example, the most common cut is the brilliant cut.

- Band: For a ring, this is the metal element that supports the stone.

- Bezel: The bezel is the central part of a ring with one or more stones, the place where the ring is set. The bezel can be either closed or open, allowing light to pass through. The setting is composed of a belt, a batten and, in the case of a claw setting, claws to secure the stone.

- Batte: For a ring, this is the small metal part that serves as a base for the prongs of a setting, below the band. It allows light to pass through and enhances the stone.

Carat (stone): For a stone, the carat is a unit of weight used to measure the mass of a stone. One carat is equivalent to 0.2 grams, and its abbreviation is ct. This means, for example, that a diamond weighs 1 ct.

- Setting : Setting is the way in which a stone is mounted on a piece of jewelry. There are several types, which we invite you to discover in our article dedicated to the different ways of setting stones, particularly on engagement rings.

We hope that this short gemmology course has given you a better understanding of our stones. our stones.

Discover also the different shapes of stones to create your ideal jewel. Will you succumb to the essential diamondor will you be seduced by our our colored stones such as sapphire, garnet or even tourmaline... ?