This Apatite octagon have the Paraiba
property, wich is strange when the origin is Africa. Paraiba is a region in
the north west of Brazil, rich with minerals. The gemstone is bought from
Thailand so either there is some confusion about the origin, or about what
the Paraiba properety stands for. However, its gorgeous.
Size: ca 19x14x9 mm
Origin: Afrika (sellers info)
Treatment: Not stated, probably heated
In stock: 1
is a group of phosphate minerals, usually referring to hydroxylapatite,
fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions,
respectively, in the crystal. The colour is often shades of green, blue-green or
brown but apatite can also be colourless, yellow or violet. Apatite is one of a
few minerals that are produced and used by biological micro-environmental
systems and is the main component of tooth enamel and bone mineral. The hardness is 5 on the
Apatite is infrequently used as a gemstone. Transparent stones of clean colour
have been faceted, and chatoyant specimens have been cabochon cut. Key sources
of apatite are Brazil, Burma and Mexico. Other sources are Canada,
Czech Republic, Germany, India, Madagascar, Mozambique, Norway, South Africa,
Spain, Sri Lanka and the United States. The apatite
that occurs in Sweden is almost exclusively a mixture of calcium phosphate and
calcium fluoride are present as assessoriskt mineral in most eruptive rocks. It
can form large, well-formed crystals in passages of pegmatit.
In apatite iron ores, the content may amount to 5-10% as it does in mines in
Kirunavaara, Leveäniemi, Malmberget and Grängesberg, Sweden.
CLARITY CLASSIFICATION IF Internally Flawless No Inclusions Visible Even With 10x Magnification.
VVS Very-Very Slightly Included Minute Inclusions Not Visible To Eye.
VSI Very Slight Inclusions Slight Inclusions Visible To Eye.
SI 1-2 Slight Inclusions: Some Inclusions Visible.
I 1-3 Included Many Inclusions Visible. 807163324