Grade B Yowah Opal Rough 45 CTS [RYB 037]

* Hint: Click on the thumbnails above to see the full sized version. Images are of the actual item unless otherwise indicated.

YOWAH OPAL

YOWAH ROUGH OPAL

THIS IS A GOOD SLICE OF YOWAH MATERIAL WITH ENOUGH THICKNESS, THE COLOUR AND PATTERN IS WHAT YOU WILL SEE ON THE PICTURES.THEY LOOK MUCH BETTER UNDER SUNLIGHT. DIFFERENT GRADE STONES ALL HAVE BEEN CUT AS SAMPLE. IT COMES OUT FROM A GOOD PARCEL.

SIZE 31X20X7.5 MM APPROX

WEIGHT:  45 CTS APPROX

GRADE  A: THE COLOUR OF OPAL IS BRIGHT ,SURROUNDING MATERIAL IS DARK COLOURED IRONSTONE, PATTERN IS INTERESTING.  

GRADE B: THE OPAL COLOUR IS BRIGHT, SOMEHOW THE PATTERN AND SURROUNDING MATERIAL IS NOT THAT INTERESTING OR HARDNESS IS NOT AS IRONSTONE. ALL THESE KIND OF MATERIAL STILL BE ABLE TO CUT A GOOD STONE OUT OF IT . GOOD COMMERICAL STONE.

GRADE C: THESE KIND OF MATERIAL NEED  CUTTING WITH CARE. ESPIALLY WHEN YOU POLISH THEM, YOU NEED A LITTLE BIT EXPERIENCE OR SKILL, STILL BE ABLE TO CUT A STONE. SOMETIMES EVEN A VERY GOOD STONE WITH SURPRISE.

GRADE D: NEED TO BE TREATED THEN CUT OR YOU HAVE TO BE VERY CAREFULLY TO POLISH THEM BUT MOST COMMONLY  WITH SPECIAL TREATMENT LIKE APPLY A HARDNER , RESEIN OR SIMPLY SUPERGLUE.

ABOVE GRADE A IS COLLECTER'S PIECE AND TOP GEM QUALITY, THOSE ARE RARE TO SEE.

No Comments