The spectra are normalized to a millimeter thickness.
Burmese blue sapphire inclusions.
What can inclusions reveal about ruby and sapphire origins.
Completely untreated it displays a vivid royal blue with remarkable saturation.
The top spectrum o ray is offset of 0 1 absorbance unit for clarity.
The richness and consistency of the color and the velvety texture is due in part to fine rutile silk inclusions that disperse light.
Surface diffusion treated blue sapphire.
Photo courtesy of apsara co uk.
Rounded guest crystals possibly calcite in an un treated burmese blue sapphire.
Expect high saturation of color in burmese sapphire.
Liquid fingerprints guest crystals and two phase inclusions in an un treated burmese blue sapphire.
The polarized uv vis nir spectra from 250 to 1000 nm of a classic burmese blue sapphire are different from those of baw mar blue sapphire.
In general burmese thai and australian blue sapphires contain crystals of plagioclase feldspars orthoclase niobite columbite calcite monazite zircon apatite fergusonite and thorite.
Inclusions in unheated sapphire from burma myanmar.
Folded fluid feathers and fingerprints are the most common inclusions in unheated burma sapphires.
Mining of burma sapphire gemstone.
These exquisite gems originate from areas known to produce some of the finest sapphires in the world kashmir in northern india across its eastern border to myanmar previously burma and their island neighbour sri lanka.
In india faceted burmese blue sapphire price per carat starts from 25 000 per carat 390 approx and goes up to 5 lakh per carat 7795 approx and even above.
Photo courtesy of apsara co uk.
The 5 09 ct blue sapphire from mogok burma shown above is such a gem.
A mong the highlights in the upcoming magnificent jewels and noble jewels sale in geneva on 15 november are several exquisite kashmir burmese and ceylon sapphires.
Cascades of swirled clouds included in a beryllium treated blue sapphire.
Liquid fingerprint inclusion in an un treated burmese blue sapphire.
The burma sapphires are formed in the igneous rocks that undergo contact and regional metamorphosis.
This feature is found in a beryllium treated blue sapphire due to high temperatures applied in this process.
With a medium to medium dark tone these gems also display a slightly violet tint.
Burmese sapphire is treasured for its royal blue hue.
Burmese sapphire prices.
As a genuine gem some inclusions are expected to be found in burmese sapphire.
Blue zones enriched along facet joints and girdle.
Color clarity cut and carat weight are the major factors influencing burmese sapphire value.
A magnified image showing a cluster of rutile silk in an untreated burmese blue sapphire.
Limited supply and strong demand also fluctuate burma neelam stone price upto a certain extent.
