HPJ REFERENCE POINT: EXCEPTIONALLY RARE 2.02 CARAT VVS MADAGASCAN OLIGOCLASE. R19,000.00

Reference Point: 498

EXCEPTIONALLY RARE 2.02 CARAT VVS CITRUS LIME OLIGOCLASE EARTH MINED IN MADAGASCAR AND CUT FOR HPJ HERE IN KZN

GEM TYPE: OLIGOCLASE

CARAT WEIGHT: 2.02 CARATS

CLARITY: VVS

DIMENSIONS: 8.05 x 8.05 x 6.05mm

COLOUR: PALE CITRUS LIME

CUT: TRILLIANT CUT

ORIGIN: MADAGASCAR

TREATMENTS: NONE

HPJ are very proud of the fact that we try very hard to bring exceptionally rare, or little known, gemstones, to BoB. In fact it is something we enjoy very very much indeed.

The image appears far too blue/green - apologies. The gem is best described as I have above - a pale citrus lime.

The plagioclase feldspars are what's known to mineralogists as a solid solution series. This means that they are effectively a "mixture" of two separate minerals, known as "end members"; in this case Albite (NaAlSi3O8) and Anorthite (CaAl2Si2O8), with the proportions of the two components determining the name and properties of the resulting mineral. Several minerals with different proportions of the two end members have been differentiated and named - and Oligoclase is made up of 70-90% albite and 10-30% anorthite.

OLIGOCLASE ROUGH FROM MADAGASCAR

Oligoclase was first recognized and named in the 1820s. It has a hardness of 6 to 6.5 (Mohs). 

Hillcrest Precious Jewels

Reference Point