SEDAGEMS

TOURMALINE BIRTHSTONE FOR OCTOBER.

This is a beautiful natural Rubullite stone that i purchased from the Cruzeiro mine in Brazil on my last trip.This famous mine has been in the family for 6 generations.

Natural unheated

Cut oval

Mohs scale 7-7.5

The video is taken in full sun

The rubellite is a particularly beautiful gemstone from the colourful family of the tourmalines. Its colour shines in the most beautiful nuances from red to shocking pink. Tourmalines are closely related gemstones which have been created by Nature in many different colours. In the trade, as a rule, it is not the case that each individual variety has its own name. Instead, the name tourmaline is used and the colour simply added, hence red, green, blue or yellow tourmaline. The exception, however, proves the rule. This also applies to the tourmaline and, in particular, to red and pink specimens. There are red and pink tourmalines in many nuances, which include a tender pink, a fine shocking pink, an intense violet and a bold ruby-red. However, only a few of these are entitled to call themselves ‘rubellites’. The name comes from the Latin ‘rubellus’, which means reddish. Rubellites are not merely red or shocking pink tourmalines. There is an important criterion for this especially beautiful gemstone, and that is the way its colour behaves in daylight and artificial light. Many gemstones change their colour depending on the light source. A true rubellite does not. It shines just as intensely in artificial light as it does in daylight. The colour of most other pink or red tourmalines, by contrast, displays a more or less clearly visible tinge of brown in artificial light.

Nealry all rubellits have inclusions-this is what the ICA states about it-

Whilst coloured gemstones in good qualities should as a rule be as free of inclusions as possible, they are looked upon with some favour in the case of the rubellite: indeed it is inclusions that render this stone really interesting from the point of view of the connoisseur. Having said that, they should be subtle, and they must not upset the way in which the light passes through this magnificent gemstone, for that could make it look cloudy or milky. Nevertheless, a rubellite with only a few fine inclusions is of course more valuable than one with inclusions which are clearly visible.

Type 1 Gemstones The following gemstones are typically inclusion free, even minor inclusions detract from their value. Diamond, Amethyst, Beryls(Aquamarine,Morganite), Citrine, Smoky Quartz, topaz, Chrysoberyl, Kunzite, Tanzanite, green Tourmaline, and Blue Zircon IF Internally flawless under extreme magnification (Very rare) F Flawless VVS Minute inclusions under 10x; invisible to the unaided eye VS Minor inclusions under 10x; usually invisible to the unaided eye SI1 Noticeable inclusions under 10x; usually visible to the unaided eye SI2 Noticeable inclusions under 10x; usually quite visible to the unaided eye I1 prominent- moderate affect on appearance or durability I2 prominent - severe affect on appearance or durability I3 prominent- severe affect on beauty, transparency or durability Type 2 Gemstones Gemstones that normally have small inclusions that do not detract from value. Alexandrite, Andalusite, Iolite, Peridot, Rhodolite, Ruby, Sapphire, Spinel, Tourmaline, Garnet, Amethyst, Red Zircon, Tsavorite; Blue, Orange, Purple, Fluorite.Yellow and Parti-colored Tourmaline F Flawless VVS Minor inclusions under 10x; usually invisible to the unaided eye VS Noticeable inclusions under 10x; often invisible to the unaided eye SI1 Obvious inclusions under 10x; visible to the unaided eye SI2 Obvious inclusions under 10x; very apparent to the unaided eye I1 prominent - moderate affect on appearance or durability I2 prominent - severe affect on appearance or durability I3 prominent - severe affect on beauty, transparency or durability