Roundness: Scale distinguishing between various degrees of roundness in pearls. Classifications include: all-round, mostly-round, slightly off-round and off-round.
Roundness: Pearls are graded by their roundness: round, mostly round, slightly off-round, and off-round.
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Seed pearl: A natural pearl less than 2 millimeters in diameter.
For many wearers, roundness in cultured pearls equals perfection, and it is the traditional sublime shape. But modern tastes vary, and you may want to explore baroque, or irregularly-shaped, cultured pearls.
" A litter of stones - not stones whose smoothness and roundness made them pleasant to the touch, not seashore pebbles picked for their glistening beauty, not small hard stones to fit neatly into the deadly sling shot.
The way a diamond is cut, its width, depth, roundness, size and position of the facets determine the brilliance of the stone.
Blending is a process of smoothing rough areas of a metal piece to provide same plane or roundness and/or same surface finish.
Bloomed Gold
This term is used for gold jewelry that has been engrossed in an acid bath to give slightly matte texture.
Yet there is no doubt that the comfortable roundness of shape and the diversity of pattern make chamber pots highly attractive to look at.
Akoya Pearls - Cultured pearls, typically of white body color, known for their high luster and uniform roundness, mainly cultivated in Japan. Akoyas are very rarely over 10 mm.
While a big, round tanzanite stud earring will highlight the roundness of one's face even more, a square stone can make the face look sharper by creating an edgy impact.
The beads closely imitate the precise roundness and shine of oriental pearls, at a fraction of the cost. Their shell center also gives them a similar weight and feel to their expensive counterparts.
No crystal system even approaches a sphere's degree of symmetry, but the isometric system is often quickly recognizable because some of the forms and combinations of forms somewhat approach sphericity (or, at least, roundness), ...
Cut refers to the execution of a diamond's design, the skill with which it was cut, the quality of its polish, and the overall symmetry of the stone. Key factors include the stone's roundness, depth, width, and the uniformity of its facets.
The strands are graded and matched at their source of origin by experts who match and price strings according to size, color, roundness, luster (function of thickness of nacre), and cleanliness.
This interaction is studied in the science of geomicrobiology. One measure of the shape of these particles is the roundness factor, also known as the Krumbein number after the geologist W. C. Krumbein.
using live video and image analyzing software, potential out-of-roundness and any deviations from the desired dimensions and a computer will guide the machine to take necessary actions by slowing the bruting speed or pressure.
narrowest and the widest points from one edge of the girdle to the edge 180 degrees with a Leveridge gauge or other millimeter gauge. Most diamonds will be at least slightly out of round so these two numbers are significant for determining roundness ...
Most South Sea pearls feature an exquisite silvery, cream or gold finish. As a result of their extreme delicacy, their unique metallic color and their exceptional roundness, South Sea pearls are usually the most expensive pearl on the market.
conglomerate A clastic rock composed of particles more than 2 millimeters in diameter and marked by the roundness of its component grains and rock fragments.
 See also: Shape, Jewel, Stone, Color, Diamond
  
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