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Know more about white sapphire vs cubic
zirconia
Sapphire is the blue sister of ruby. Ruby and sapphire are the same material, the
mineral corundum and the second hardest gemstone after the diamond. Red corundum
is known as ruby, while the rest of colours refer to synthetic sapphire. Although blue
is the classic colour of sapphire, Sapphire is actually found in a wide range of colours,
including yellow, pink and green.
Colours of Sapphire
Blue colour is the most famous of the sapphire colours. The valued Kashmir sapphires
and Burmese have a deep blue and velvety. These topaz London, sapphires are not
often seen in the current market. Sapphires from Sri Lanka and Madagascar are the
most common nowadays at white topaz price, with a wide range of colours from light
blue to dark blue. Other producers of blue sapphire are Australia, Tanzania, Thailand,
Cambodia, and Montana. Colourless
Corundum is rare as pale shades of colour that are almost always present. Many small
white sapphires used in jewellery are synthetic. Purple sapphire is rare, but they are
found in Sri Lanka and Tanzania. Impurities of iron and titanium together can cause
the purple tone of the stone. Much of Yellow sapphire is on the lighter side. Heat
treatment can produce greater intense golden yellow colour and sapphire treated with
beryllium can be a bright yellow.
Padparadscha is the word cingalese for a lotus flower of Sri Lanka lotus flower.
Colour, brightness, size and clarity, would determine the value of these stones. A true
padparadscha will always have a touch of pink. Many sapphires that look green
composed of alternating fine bands of blue and yellow sapphire, which can be visible
under the microscope.
Purchase of synthetic star sapphire
Colour
With blue sapphire, the most popular colour, the intensity of blue is the most
important factor. For example, you can have a large stone of many carats, but if the
colour is a weak blue, washed, then the value of the stone will be lower. Look for a
stone that has a rich blue without it being dark or inked. In general, sapphires that are
too dark and inked or very light in colour are valued less. However, light blue
sapphires often have a luster that is rarely found on darker stones.
Lighting
Sapphires are best seen with fluorescent light or daylight. Incandescent light is redder,
and sapphires look less attractive in this type of lighting.
Clarity
Sapphire tends to be cleaner than ruby. Look for best cubic zirconia stones that are
clean eyes. This means no inclusions that are visible by simple sight. Actually, the
extremely fine silk in all the stone can increase the rhodolite garnet value of some
sapphires. The famous sapphires of Kashmir have a velvety blue colour, which is
caused by this fine silk. This silk is necessary for the star effect on sapphire star;
however, too much silk weakens the colour, making it look undesirable greyish.
Cutting
A variety of shapes plus cutting styles are very common with sapphires. Ovals,
squares, cushions, and rounded look, like other forms, such as the heart or emerald
cut. Round stones can achieve a small bonus. Sapphires in cabochon cut are also
common. Used for star stones, the best cabochons are a bit transparent, with smooth
domes of good symmetry.