culet การใช้

• Tolkowsky's calculations included neither a culet nor a girdle.
• The culet is added largely to protect the integrity of the gemstone.
• They may or may not have a culet.
• The culet is the tiny point or facet at the bottom of the diamond.
• The diamond is then set down and picked up with the tweezers in a table-to-culet hold.
• The grader views the diamond for the first time through the table, studying the culet area of the stone for inclusions.
• Historically, some jewelers'diamonds were mis-graded due to smudges on the girdle, or dye on the culet.
• With other gemstones that are not subject to cleavage, the culet is added to protect the fragility of the pointed tip.
• This cupping phenomenon is the elastic stretching of the edges of the diamond culet, commonly referred to as the " shoulder height ".
• The recutting of the gem from to was most likely intended to remove the'umbrella'coloration pattern it had around its culet.
• The "'Croix de Culet "'is a mountain of the Chablais Alps, overlooking Champ閞y in the canton of Valais.
• The sample was not evenly distributed across the diamond culet but localized in the center due to the " cupping " of the diamond at higher pressures.
• The total facet count is 62 ( excluding the culet ) : 25 on the crown; 29 on the pavilion; and 8 on the girdle.
• Sometimes a 58th facet, called a " culet " is cut on the bottom of the stone to help prevent chipping of the pavilion point.
• Earlier brilliant cuts often have very large culets, while modern brilliant cut diamonds generally lack the culet facet, or it may be present in minute size.
• During the first experiments using diamond anvils, the sample was placed on the flat tip of the diamond, the culet, and pressed between the diamond faces.
• The star facets on the crown were vertically split, and the pavilion had sixteen needle-like facets arranged in pairs, pointing outward from the culet facet.
• Typical culet sizes for diamond anvils are 100 250 micron, such that a very high pressure is achieved by applying a moderate force on a sample with a small area, rather than applying a large force on a large area.
• They consist of overlapping horizontal culet, so that the faulds and culet form a skirt that surrounds the hips in front and back; the culet is often made of fewer lames than the fauld, especially on armor for a horseman.
• They consist of overlapping horizontal culet, so that the faulds and culet form a skirt that surrounds the hips in front and back; the culet is often made of fewer lames than the fauld, especially on armor for a horseman.