looking for some calibrated natural pink topaz in a matched pair,
emerald cut, for a customer, to match a ring she has. I have
discovered most pink topaz material in a 4x6 emerald cut or
anything in or near that size is treated material, and usually is a
very vibrant or a hot pink color.
Although it is natural (not laboratory grown) material, almost all
of the natural Pink Topaz you will find has been heat treated. They
take red/orange Topaz and heat treat it to the Pink Topaz you see. I
am really not sure why, as I find the red/orange Imperial or Precious
Topaz a much more desireable color. The heat treated Pink Topaz
reminds me of light colored Pink Tourmaline, only much more expensive
- on the order of USD$ 120+ per carat for Pink Topaz.
All that being said, I will have some of the heat treated Pink Topaz
at the February Tucson Show and I will try to make sure I have at
least a matched pair in the 4 x 6 mm emerald cut. Octagonal and
rectangular shapes are not too easy to come by in Imperial or
Precious Topaz because of the elongated shapes of the rough
The larger pieces of heat treated Pink Topaz seem to attract the
oriental buyers - but most just look and write down the price and
size - leave their finger prints all over the stones and complain
about the price. But rarely buy one.
There may be some of the white topaz covered with a coating that has
been available as Aqua Aura and Mystic Topaz, etc. in a pink color.
I have not seen it - but do not pay attention to coated gems
Lowe Associates - Brasil
Gemstones, Rough, Specimens
Tucson - February 2 - 7, 2005 - GJX # 205
e-mail: USA < email@example.com >
e-mail: Brasil < @Robert_P_Lowe_Jr1 >