The girdle is the outer edge of the gem, where metal grips the stone to hold it in place in jewelry or art. The pavilion is the bottom portion of the gem. If the pavilion facets come to a point at the bottom, that point is called a culet. Sometimes there is a small facet at the culet that is parallel to the table.
What are the parts of a gemstone?
The Three Principal Areas of a Faceted Gem
- Girdle. The widest part of the gem, the girdle defines its outline. …
- Crown. For both cabochons and faceted gems, the top is called the crown. …
- Pavilion. …
- Mains. …
- Table Facet. …
- Break Facets. …
- Star Facets. …
- Pavilion Facets.
What is the surface of a gem called?
Facet, flat, polished surface on a cut gemstone, usually with three or four sides. The widest part of a faceted stone is the girdle; the girdle lies on a plane that separates the crown, the stone’s upper portion, from the pavilion, the stone’s base.
What is the face of a gemstone called?
In gemology, a culet is a flat face on the bottom of a gemstone.
What is the flat part of a diamond called?
A cut diamond has a flat upper surface called the table. It has a wide part called the girdle. The depth of a diamond is the distance from the table, from where the diamond angles out, down to the tip called the culet. The area between the table and the girdle is called the crown.
What is the rarest gem?
Musgravite was discovered in 1967 and is arguably the rarest gemstone in the world. It was first discovered in Musgrave Ranges, Australia, and later found in Madagascar and Greenland. The first sizable gem-quality specimen was discovered in 1993.
What are the 12 stones in the Bible?
It held twelve precious stones set in gold filigree: sardius (ruby), topaz, carbuncle (garnet), emerald, sapphire, diamond, jacinth, agate, amethyst, beryl, onyx and jasper. Each stone was engraved with the name of one of the twelve tribes of Israel.
What is the table of a gem?
structure of faceted gems
…to the girdle is the table; the very small one in the pavilion also parallel to the girdle is the culet. Certain stones, such as mogul cut diamonds (egg-shaped jewels faceted without regard for symmetry or brilliancy) or drop cut stones, have neither a girdle, a crown, nor a pavilion.…
What is a checkerboard cut gem?
In a checkerboard cut, a faceter cuts the gem with square facets, so its crown and table resemble a checkerboard. This cut is often used on translucent stones.
What are two of the most beautiful ores?
Here are the top 10 which cover only some of the most amazing and spectacular we’ve ever seen.
- (1) CROCOITE.
- (3) AZURITE.
- (4) TOURMALINE.
- (5) FLUORITE.
- (6) OPAL.
- (7) TITANIUM QUARTZ.
- (9) ROSE QUARTZ.
- (10) RHODOCHROSITE.
What is the most expensive gem cut?
The Most Expensive Gemstone Cut: Round Brilliant
The round brilliant cut holds the distinction of being the most expensive cut (especially for diamonds) and for having the highest degree of sparkle among all the other cuts.
What is the most expensive gemstone?
The Most Expensive Gemstone in the World: The Blue Diamond
- Are worth $3.93 million per carat.
- Are rare to find in a flawless sample.
- Cause a huge stir in the jewelry industry when one goes to auction.
What does facetted mean?
Definition of ‘facetted’
1. any of the surfaces of a cut gemstone. 2. an aspect or phase, as of a subject or personality.
Can a diamond be flat on top?
The flat top of a diamond is called the table. The thin center perimeter of the stone is the girdle. The section between the table and the girdle is called the crown. … Depending on how the stone is cut, round diamonds will have different numbers of facets.
Does a diamond shine like a rainbow?
“People have a misconception that diamonds sparkle like a rainbow, but they don’t,” Hirsch said. “They do sparkle, but it’s more of a gray color. If you see something with rainbow colors [inside the stone], it could be a sign that it’s not a diamond.”
What angle is a diamond?
The angle of the round diamond must be between 40-41.5 degrees, and 40.75 degrees is perfect. For marquise, pear, and ovals, the perfect angle is 40 degrees, and an acceptable range is 39.25-40.75 degrees. . For emerald and rectangular cuts, the perfect angle is 45.05, and an acceptable range is 43.3-46.8 degrees.