Coloured stone Analysis Report

Features

Page 1 of report

Object
Loose stone

Object

The object specifies whether we have received a single stone, a batch or a jewel, and the type of jewel.

Number of stones analyzed
1
Shape - Cut
Oval - Brillant / Step cut

Shape - Cut

The shape, cut and dimensions describe the external appearance of the stone. When you deposit a jewel with several stones, or batches, we note the diametrical variation of the batch.

Measurements
12.16 x 9.85 x 6.15 mm

Measurements

The shape, size and dimensions describe the external appearance of the stone. When you deposit a jewel with several stones, or batches, we note the diametrical variation of the batch.

Mass
13.19 ct

Mass

The weight of the stones is indicated in carats (1ct = 0.2 g) to two decimal places.

Rounding is done according to the 3rd decimal place: if it is less than 9 then no rounding, if it is equal to 9 then round up. For example: 0.9990 ct is 1.00 carat but 0.9989 ct is 0.99 carat.

In the case of jewellery set with stones, it is weighed in grams to two decimal places. The rounding rule that applies is the arithmetic rounding.

Color
Vivid Blue

Color

The colour gives an indication of the hue (here: blue), the shade if necessary (e.g. slightly green) and the saturation (here: vivid).

Opacity
Transparent

Scientific instruments used

  • Mass measurement
  • Normalised lighting
  • Infrared spectrometer (FTIR)
  • UV-VIS-NIR Spectrometer
  • Measurer
  • Ultraviolet lamps
  • Photoluminescence spectrometer
  • Photography device
  • Microscope
  • EDXRF Spectrometer

Identification

SAPHIRRE (NATURAL CORUNDUM)


Treatment

NTE - No indication of thermal enhancement


Geographic origin

The geographical origin indicated is an opinion of the Laboratory based on gemmological data (spectra, chemistry, inclusions).

Sri Lanka (Ceylon)


Photography

The colour and dimensions of the object analysed are approximate.