Facts and History
- Diamonds were first mined in India more than 2800 years ago.
- The very word ‘diamond’ comes from the Greek term ‘Adamas’ meaning unconquerable.
- The youngest diamond is 900 million years old, and the oldest is 3.2 billion years old.
- On an average a stone loses, almost half its original weight during cutting and polishing
The 4 C’s of Diamonds are :
- CARAT WEIGHT
About the 4 C’s
- The 4 C’s are the most inevitable parameters when grading and valuing diamonds.
- All the 4 parameters command an equal importance in assessing the quality of the diamonds.
- Very often the importance of the 4 C’s is overlooked in comparison to the 5th C – Cost!
The first C – CUT
- “Cut” refers to the way the diamond is cut keeping very specific measurements and proportions that bring out the maximum brilliance in the final stone.
- Cut is not the same as Cutting style or Shape.
- Importance of Cut is often overlooked when judging the quality of diamonds.
Cutting Process and Techniques
- Cutting diamonds is a tedious multistage process.
- Diamonds are separated from the mines according to the shape of the rough crystals.
- Rough diamonds are first planned and marked. This involves deciding on what best quality diamond can be cut from the rough crystals that are found. This is a very important stage and eventually decides the cost of the diamond.
- The Planned diamonds are then sawed and Bruted by either of the two techniques :-
- Manual sawing
- Laser Sawing
Some Ideal Cut & Proportions
- Crown Angle = 34`
- Pavilion Angle = 40.5`
- Table Size = 56%
- Total facets including table = 57
Bruted diamonds are then polished and faceted according to very specific proportions and physical shape.