9.16 cts Rare Natural Octagon-cut Red SI Rhodonite (Brazil)

New without Tags.  This gem has never been used/placed/set in a setting.
 It is utterly undamaged, unmarred and in perfect condition as expected of NWOTags.

I have included a Rhodonite article below for your appreciation and enjoyment of this rare find.

Summary from below:  "Rhodonite is transparent to opaque. However, transparent material is extremely rare and most gemstones are opaque. Gemstones typically exhibit black inclusions that are composed of manganese oxide. The black inclusions may be absent, sparse or dense. When polished, rhodonite exhibits a vitreous lustre."   ...   "Rhodonite is typically cut en cabochon or carved. Transparent materials are faceted, but these are rare."   ...   "Rhodonite is not known to be treated or enhanced in any way."

Type:  Natural Rhodonite  (personally confirmed as Genuine Rhodonite by digital refractometer (RI=1.733), dichroscope (dichroic), polariscope, spectroscope, UV short&long-wave light, measured Specific Gravity=3.73) -- captej2012
Color:  Semi-Transparent Red
Shape:  Octagon-cut
Dimensions:  14.33mm x 9.29mm x 6.58mm
Weight:  9.16 cts
Luster:  Excellent
Clarity:  SI
Hardness:  6.5 rating on the Mohs Scale
Treatment:  Not Heated, Not Treated, Not Enhanced
Origin:  Brazil

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Rhodonite Gemstone Information

Rhodonite is a rose pink to dark red gemstone with black dendritic inclusions. It is a manganese silicate, and a member of the pyroxenoid group of minerals. The manganese is often partly replaced by iron, magnesium, calcium, and sometimes zinc, occasionally in large quantities. A greyish-brown variety containing as much as 20% calcium oxide is called bustamite, whilst fowlerite is a variety that contains 7% zinc oxide.

Rhodonite gets its name from the Greek word, "rhodon", meaning "rose coloured" and this attractive hue and vitreous lustre make it a popular ornamental material. Rhodonite inlay was used to decorate the Moscow Metro, and Mayakovskaya Station, built between 1935 and 1938, has over 80 square metres of columns with rhodonite inlay. In 1979, rhodonite was designated as the official state gem stone for Massachusetts, since it is considered to be the most beautiful material found there.

Rhodonite

Rhodonite deposits are found in Australia (New South Wales), Finland, Japan, Canada, Madagascar, Mexico, Russia (the Urals), Sweden, South Africa, Tanzania and the USA (New Jersey).

Rhodonite Colour

Rhodonite varies from a soft rose-pink to a bright flesh-coloured red, with black dendritic inclusions. Crystals are inclusion-free and transparent red, but rare.

Rhodonite Clarity and Lustre

Rhodonite is transparent to opaque. However, transparent material is extremely rare and most gemstones are opaque. Gemstones typically exhibit black inclusions that are composed of manganese oxide. The black inclusions may be absent, sparse or dense. When polished, rhodonite exhibits a vitreous lustre.

Rhodonite Cut and Shape

Rhodonite is typically cut en cabochon or carved. Transparent materials are faceted, but these are rare.

Rhodonite Treatment

Rhodonite is not known to be treated or enhanced in any way.