face up The view of a gem from the top or crown.
fancy color In diamond, any color other than colorless viewed face up; in diamond any color is a fancy color.
FACE UP Describes the viewing position of a gem as seen when looking at it perpendicular to the table facet. A gemstone that faces up well is excellent in appearance in relation to its color or clarity grades.
Face Up
Refers to the viewing angle of a polished diamond, so that the table faces approximately towards the viewer, rather than the viewer looking through the side of the stone.
Facet, Facets ...
Face Up
A gemstone as seen with the viewer looking directly at the top of the stone.
Feather ...
In the face up position, an Abrasion may look blurry, fuzzy, white or jagged like in the image below.
Extra Culet Facet ...
With no standardized grading system, clarity can be difficult to judge, but if flaws aren't visible in the face up position, then they rarely matter.
In selecting a diamond, the first question that should be asked, with disregard for all the technical jargon is: Is the diamond face up gorgeous and stunning?
Cape - (a) A broad range of diamond color grades that show a distinct yellow tint face up (except for small stones in the top part of the range).
2) Eyeclean: In this category, gems, as seen under the normal viewing conditions: face up, in normal lighting, and about 12-14 inches from the viewer, look clean.
With colored gemstones, if an inclusion is not showing in the face up position, it generally doesn't matter at all. (unlike diamonds which are graded upside-down). Important stones like emeralds, rubies and sapphires are rarely clean.
Usually colored gemstones are examined from the top or face up position. So when you buy a gemstone, you should examine it from the top and if an inclusion or flaw doesn't show in the face up position, then it won't affect the value and beauty much.
The GIA (Gemological Institute of America) classifies two types: gems with ironstone visible face up, called opal with matrix and gems with no visible inclusions, called opal in matrix.
Strong birefringence can make the zircon fuzzy looking face up so care should be taken in orienting the stones while cutting.
Due to its low hardness, zircon should be held with great care, and each stone should be packed individually.
Chanthaburi ...
Judge an emerald's beauty factor by looking at the stone face up. Emeralds may not always be cut with symmetrical pavilions, but if the stone has good brilliance and transparency this is not too important.
The area gives the true size of the diamond face up (as it would appear when set in a ring).
Unless these diamonds are compared next to a master stone of higher color grade, color is nearly indiscernable. Appear completely colorless when face up. These diamonds are still rare, but slightly less expensive and are considered a good value.
Fancy Coloured Diamonds: Naturally coloured yellow and brown diamonds that exhibit colour beyond the Z range, or that exhibit any other colour face up.
Feather: A collective term for diamond cleavages and fractures.
A well cut stone may "face up" 3 or more color grades higher because of the masking effects of the brilliance and dispersion.
Color is, of course, also influenced by the type of light in which a gem is displayed.
orange, green and blue (blue is the most plentiful color in opals). Prices vary between opal dealers who place different values on color combinations. Any type of play-of-color is desirable if the colors are intense and not dull when viewed face up.
The so-called blue-white stones are rarely blue in their body color, but rather are so nearly white that the blue parts of the spectra which they produce are very much in evidence, thus causing them to face up blue.
 See also: Stone, Cut, Diamond, Face, Color
  
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