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Pink sapphire
This is the name given to the pink variety of
corundum, red corundum generally being known in English-speaking
countries as ruby, blue corundum as sapphire, and any other
shades as sapphire combined with the appropriate color: pink
sapphire, yellow sapphire, green sapphire, etc. Pink sapphire
and ruby are regarded as two different varieties, despite
the fact that the only difference is their depth of color.
The same does not apply to tourmaline, both the pink and red
forms of which are known as rubellite, or to sapphire and
emerald, which keep their names even for paler specimens.
Appearance Pink sapphire may
range from a very delicate, pleasing, lively pink, without
any overtones, to pink with a slight violet tinge; but all
gradations of color are possible, from those tending toward
ruby to those tending to)ard violet sapphire. Like all forms
of corundum, it has very good luster. It is normally given
a mixed, oval cut and sometimes has fine inclusions and liquid
veils in lacelike formations, characteristic of the corundum
of Sri Lanka, from where most pink sapphire comes. Stones
of several carats are normal, but specimens of 10 carats or
more are rare.
Distinctive features Pink sapphire's
most striking characteristic is its luster, common to all
corundum and most noticeable in light-colored specimens. It
is usually, though not always, a livelier, more attractive
color than tourmaline; and as is often the case with paler
stones, the physical characteristics generally have to be
measured to tell them apart. In the case of pink stones, measurement
of the density by means of heavy liquids may be sufficient.
Occurence Pink sapphire comes
almost exclusively from Sri Lanka; much more rarely from Burma.
Value Although the "minor"
varieties of corundum are always a lot less valuable than
rubies and sapphires, pink sapphire is more highly prized
than the yellow, green, and violet varieties, as it is so
attractive. It is one of the most valuable secondary gems.
Simulants and synthetics Pink
sapphire has not really been imitated, but it has been produced
synthetically by the Verneuil flame fusion method. The synthetic
form, like that of yellow sapphire, is extremely well disguised
and it is very hard to distinguish it from the natural varieties.
Above: Blue, yellow, pink, etc. sapphires. Below: Pink sapphire,
0.54 ct. Sri Lanka.
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