| According to Ancient Persians the
Earth rested on a giant Sapphire and it was the stone's
reflection that colored the sky. To some religions the blue
color represents the heavens. It was an ecclesiastical gem,
symbolic of purity. To derive the most benefit from this holy
stone, therefore, it was necessary to be pure oneself.
According to the Bible, sapphires were in the Garden of Eden
and something like them will be in the heavenly Eden. It has
been a holy stone to the Catholic Church as legend is the Ten
Commandments were engraved on Sapphire. Sapphire is identified
with chastity, piety, repentance, and it is said that King
Solomon wore a Sapphire ring.
Egyptians associated the clear sapphire with the eye of
Horas, Greeks identified the white sapphire with Apollo and
was used by the oracles at Delphi. The stone was used by the
Greeks to stimulate the opening of the third eye and to tap
into the subconscious. In the old days, it was used to banish
envy and jealousy. Sapphire would keep one's thoughts pure and
heavenly and help those in the right find justice in legal
matters. The peaceful, heavenly hues of blue stones were often
thought to calm the mind, body, and spirit.
Sapphires were used to cure all eye ailments, purify the
blood, and fortify the heart. Mixed with milk, this gem dried
up ulcers, boils, and pustules. It would also cool fevers,
sharpen eyesight, and protect against mental illness. The
gemstone was also thought to be a powerful amulet to protect
against poisonous creatures and was lethal to venomous insects
and reptiles hiding nearby. Wearing a sapphire acted as an
antidote against poisoning and if rubbed on a wound would stop
bleeding. It was thought to be effective in quelling
inflammation of the eyes. Soldiers wore them to prevent
capture by the enemy.
Sapphires were believed to have gender: dark stones were
designated female, light ones were male. September's
birthstone is thought to make its wearers amiable, wise,
virtuous, and strong. It also promotes chastity in virgins and
insures fidelity in marriage. If given to a mate it would dull
if you were ever unfaithful. Clear sapphires, like diamonds,
are the guardians of love. When given to one another it
enhances love for each other and tunes your psyches to one
another.
Perhaps the most important attribute of Sapphire was said
to be that of protection against sorcery. It is said to lessen
the powers of the cast spells of evil ones or evil spirits.
Sapphire was worn as a protection stone and to return any
negative vibrations to the producer. It was thought to banish
evil spirits and frighten devils. It would turn evil sorcery
and negative spells back against the sender, provide advance
warning of hidden dangers, and free the mind of the enchanted.
If a wicked person wore it, it wouldn't shine and would crack.
The main sapphire-bearing rocks are marble, basalt, or
pegmatite, mined mainly from alluvial deposits or deposits
formed by weathering. Sapphires rarely are mined from the
primary rock. Corundum stones (sapphire and ruby) are gems
with the smallest hexagonal unit cells. They resemble boxes
with hex ends and rectangle sides. This structure can be seen
distinctly then viewed under a gemscope. They have four axes
-- three that intersect each other at 60 degree angles, and
one perpendicular to the other three. In the spectrascope,
sapphire shows iron absorption in a wide band from 450-460 nm,
with a fainter band to 470 nm. Hardness 9.00 Specific
gravity - 3.96 to 4.0
When a sapphire shows asterism, it is called a "star"
sapphire. The star is seen in cabochon cut sapphires
(rounded, dome-shaped cuts) as several movable arms, or rays
of white light, radiating from the center. Black star
sapphires are usually cut in a flat cabochon. And they need to
be worn with more care than other sapphires to prevent
separation between their "twinning" planes.
"Twinning" occurs when alternating layers grow in
different directions.
Prices of almost all sapphires have increased only slightly
since our Tenth Edition Catalog was printed. Kashmir sapphires
continue to command the highest prices. But prices of Ceylon
(Sri Lanka) sapphires have increased dramatically in the last
five years. Also, there has been a significant increase in
prices of stones of three carats and larger.
I'll bet you've noticed a sapphire on the market know as Diffused
Sapphire. Diffused is not a geographical
location like Ceylon, Thailand, or Burma. Diffused is a
process where man takes colorless or pale corundum and treats
it with elements that give sapphires their blue color. The
colorless or pale stones they once were are now beautiful rich
blue stones that anyone would love to possess. They even
sometimes rival the finest blue Ceylon color. The diffused
sapphires are quite durable as long as they are never
repolished or recut. The treatment to produce blue is only .25
to .50 millimeter into the stone's surface. Therefore,
recutting or repolishing would remove the enhanced color. But
it does not make the surface any softer than any other natural
sapphire. The prices on these diffused stones are very
reasonable, running about 1/6th the price of natural colored
sapphire of similar color. Because they are repolished, a
small layer of the colored surface is cut away leaving
concentrated color zones at the facet junctions. The zoning
can be detected by immersing the stones in methylene iodide.
Diffused sapphires do have some people in the jewelry trade a
little nervous because they can be mistaken for very expensive
natural colored sapphires. Fortunately identification of
diffused sapphire is fairly easy. Probably the most important
enhancement besides that designed to improve color is that
used to improve clarity. Controlled heating and cooling can
dissolve the slender rutile needles (called silk) right into
the crystal structure to improve the clarity. PSU
does not sell diffused Sapphire.
Sapphires are comprised mainly of aluminum oxide, but
titanium and iron are the trace elements that give natural
colored sapphires their color. For years almost all sapphire
rough has been heat treated. The addition of heat burns out
impurities and allows the trace elements to expand improving
the color. Then the rough material is cut into faceted or cab
gems.
Sapphire was important to wizards and seers who used it to
help interpret visions and prophesies. Here are the mystical
properties associated with Sapphire. Many people think all
sapphires are blue. But sapphires are actually corundum that
are any color except red. Red varieties are called rubies.
Sapphires range in color from violet--the most difficult to
distinguish from a ruby -- to blue, green, yellow, orange,
pink, and purple. The general term for any color except blue
is "Fancy." The GIA is shying away from using
"place" names in describing color. But you can still
use fanciful language when selling the beauty of color. For
example, the term "padparadscha" ("pad"
for short), meaning "lotus color," is used to
describe sapphires having a rare pinkish-orange color.
The most desired sapphire color is pure cornflower (not
cauliflower) blue. Small differences in any of the color
components--hue, tone, and saturation--can have an important
impact on value. Although large sapphires are rare, the
Smithsonian has the Logan sapphire--a 423 carat blue stone
from Sri Lanka. The most important sapphire sources are
Kashmir, Sri Lanka, Thailand, Australia, and the Yogo Gulch in
Montana. Other sources include Burma, Kampuchea (Cambodia),
Kenya, and Tanzania.
Kashmir is the quintessential sapphire source! Blue
sapphire from Kashmir has always been very highly regarded
because of its superb cornflower blue color. The deposits were
located in 1881. Almost all Kashmir sapphires show zoning, and
this is one of the ways in which they can be identified. The
zoning is associated with very small layers of liquid
inclusions that give the velvety or sleepy appearance. The
Kashmir mines have not been operating, at least officially,
since 1983 and any crystals recovered were found by the
indigenous population who were forbidden to engage in mining
or in gem trading.
Gem quality sapphire is found in many parts of Queensland,
Australia but the main deposit is at Anakie. Sapphires
occurring in alluvial deposits were first discovered in 1870.
Colors include deep blue, green, opaque black, bronze and
yellow. Increased heating of Australian sapphire, in Thailand,
has reduced the volume of available inky-black Australian
sapphire. Thailand is today's leading source of sapphire. But
mining is not the reason. Instead, heating accounts for the
large volume of stones sold. The Thai have developed elaborate
procedures for "lightening Australian and darkening Sri
Lankan" sapphires. Costs for the rough, mining, and
cutting all fall behind the cost of the fuel needed to
maintain the ovens used to "cook" sapphire. Black
star sapphire is mined principally in Thailand.
The rarest and most valuable collector fancy sapphire is
the padparadscha, which is Sinhalese for "lotus
flower". This gem is occasionally found in Sri Lanka. A
gem padparadscha will range between $5000-$10,000 per carat.
Large padparadscha can exceed these prices. Some unscrupulous
dealers have been selling some of the new African fancy
sapphires as padparadscha. However, these stones have too much
orange-brown to be properly labeled as padparadscha.
The most well-known color is blue, but Sapphires are also
beautiful in shades of pink, yellow, and other colors. The
most desirable color, if blue, is said to be cornflower blue -
an intense color, neither too light nor too dark. Sapphire's
name was originally linked to the color blue, and some of the
legends surrounding the stone might actually apply to other
blue stones such as Lapis Lazuli. But fancy colored Sapphires,
the other members of the Corundum family of
gemstones, offer a myriad of colors other than Blue. So take
the blues out of September with fancy color Sapphires such as
green , yellow, orange, pink, purple, violet, brown, black,
gray or colorless . The black and gray varieties are most
often seen in star sapphires.
The second most valuable fancy sapphire is the electric
pink. The best of these stones have a pure vibrant color
without violet or purple. What makes these stones exceptional
is an electric intensity and a tone that pushes it way above a
pastel color. Although technically pink sapphires in America,
some cultures, such as the Japanese and Europeans, buy and
sell these stones as "Burma rubies". Gem pinks sell
from $1500-$3000 per carat. Large multi-carat sized pinks can
exceed $4000 per carat. |