Sapphire - The Most
Popular Colored Gemstone
There are many varieties and qualities of sapphires. No two sapphires are the same.
As with all other gemstones, quality
always equals value.
Here are some guidelines in selecting your dream sapphire.
Color Is The Most Important Factor In Determining A Sapphire’s Value
Intensity, uniformity and purity of color are the most important
considerations when making a
decision about the purchase of a Blue Sapphire.
Fine Blue Sapphires should not
overtones or secondary colors. These will lessen the beauty of sapphire. The
overall beauty of the stone will depend on the cutting. But the shades of color
under different lighting conditions will manifest differently under different
Dark Blue Sapphires will appear black under low light
settings, while fine
Blue Sapphires will maintain their color in any light setting. Blue Sapphire
jewelry remains one
of most sought after jewelry types with rings, earrings, pendants and Sapphire
necklaces. These will make a beautiful addition to any jewelry collection but also a fairly sound
The Carat Weight Of Sapphires Greatly Affects Per Carat Prices
Large sapphires of high quality are rare and highly prized. Any high quality
piece above fifteen
Carats is considered extremely rare. As the Carat weight of a sapphire
increases, so does its
price per Carat. Large sapphires are many times rarer than smaller sapphires,
prices increase disproportionately - a five Carat sapphire is worth many times
more than five one
Carat sapphires of a comparable quality.
Ideally, a sapphire should allow the free transmission of light throughout
its body without
hindrance. The ideal stone is “crystal clear”. In practicality, the clarity found in
sapphires tends to be
less than that found in many other gemstones such as diamonds.
Faceted sapphires are found in a variety of
shapes and styles.
Ovals and cushion cuts are the most common cuts. But other shapes such as
emerald cuts and hearts
are not uncommon.
Slight premiums are levied upon round cut sapphires due to the higher carat
weight loss of
expensive rough crystal during cutting. Conversely, discounts are often applied
to the value of
both pear and marquise cuts.
A perfectly cut sapphire should exhibit good symmetry and polish conditions,
facets should be
aligned straight in relation to the gem’s girdle and also to each other, polish
be good with no visible surface pits or polishing lines.
Cabochons are the most common form of cut seen in sapphire. Often used to
develop and display
asterism in star sapphires, cabochon cuts are most regularly applied to those
clarity is not ideal for faceting. Well-cut proportioned cabochons with good
symmetry that are
semi-transparent with smooth un-cracked domes are the ideal.
Heat Treatment of Sapphires
Most sapphires in the market today have been subjected to high
temperatures called heat treatment. This age-old
practice is said to have originated in Sri Lanka some 2,000 years ago. People
from Thailand are said to have perfected this technique in modern days.
Sapphires are heated at high temperatures to improve their clarity and to
intensify their colors.
The proportion of unheated sapphires on the market is small and is widely
thought to be less than
1%. Although no more beautiful, their rarity makes them highly collectable and
prices are set at
a premium, sometimes fetching triple the price paid for an equivalent heated
purchasing unheated sapphires, be aware that unheated material is rare. Purchase from a reliable supplier whom
you can trust. Have
claim verified by a qualified expert or gem lab.
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