Duarte
& Bastos produces the best colorless and blue Topazes, treated or bombarded,
in rough and polished forms, and in several formats and sizes, most of which
come from the company mine.
As these gems are sold at reasonable prices, Topazes
have been widely used in jewelry production with excellent results. At Duarte
& Bastos, the client can find the best Topazes produced on the market, including
specimens in large sizes and without inclusions. The most frequent shapes are
the oval and rectangular, but they are also found in pear shapes (teardrops)
and in mixed shapes generally called fantasy.
The colorless Topaz almost never presents inclusions,
and thanks to its abundance, there is a wide variety of choices. This stone
is not imitated nor produced synthetically, and the best way to distinguish
with certainty is through refraction rates. Using radiation processes, the stone
turns blue and is practically identical to the natural blue Topaz.
The blue Topaz has a homogeneous color, which distinguishes
it easily from the Aquamarine, and a higher color intensity means a higher value.
It is similar to the synthetic blue Spinel, but, with careful observation, it
is possible to notice its birefringence, which doesn't occur in the other stone.
Characteristics:
To receive further information on the production of
Topazes at Duarte & Bastos, send us an e-mail
or get in touch with our staff in Brazil.
