Rare Andalusite ring in 18ct Gold circa 1980s vintage

Rare Andalusite ring in 18ct Gold circa 1980s vintage.  You may not have ever heard of Andalusite as it is difficult to find Gem Quality stones and even more difficult to find properly cut stones.  The cut is vitally important in Andalusite as it is a Pleochroic stone, that is, it shows different colours in different directions dependent upon the way in which it is cut and polished and the kind of light that is is being viewed in.  The best shape for this stone is a rectangle cushion shape, the best colour is the lovely Green you see here - which is clealy absent the less desirable brown colour change tint that is found in the cheaper quality and lesser cut stones, typically round or oval.  Simply set into a bit more than a 1inch, 2.5mm front, these superior stones stand alone with no need for further embelishments. An independent valuation from a licenced valuer is included with this ring and has a value of $2700.  

You will not find finer Andalusite than these examples. Origin- Spain & France. Vauation reads as follows:

An 18ct yellow gold Andalusite ring featuring three rectangular Andalusites, four claw set diagonally in a 1.20 - 2.80mm wide hexagonal shank.  Stamped .750 for 18ct Gold.  The ring is in a veery good condition.

Andalusite measurement:

8.30 x 4.40 x 2.65 = 0.80 cts and

8.90 x 5.00 x 3.40= 1.30ct and

9.35 x 4.90 x 4.15= 1.70ct

Ring weight: 5.40g