Completely untreated it displays a vivid royal blue with remarkable saturation.
Burmese blue sapphire inclusions.
Color clarity cut and carat weight are the major factors influencing burmese sapphire value.
In general burmese thai and australian blue sapphires contain crystals of plagioclase feldspars orthoclase niobite columbite calcite monazite zircon apatite fergusonite and thorite.
Burmese sapphire prices.
The 5 09 ct blue sapphire from mogok burma shown above is such a gem.
The spectra are normalized to a millimeter thickness.
The richness and consistency of the color and the velvety texture is due in part to fine rutile silk inclusions that disperse light.
Photo courtesy of apsara co uk.
Photo courtesy of apsara co uk.
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.
The color is truly exceptional with a saturation rarely.
With a medium to medium dark tone these gems also display a slightly violet tint.
What can inclusions reveal about ruby and sapphire origins.
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.
Short rutile also sometimes referred to as the burmese silk is the most common inclusion.
Liquid fingerprints guest crystals and two phase inclusions in an un treated burmese blue sapphire.
Liquid fingerprint inclusion in an un treated burmese blue sapphire.
Burmese sapphire is treasured for its royal blue hue.
The burma sapphires are formed in the igneous rocks that undergo contact and regional metamorphosis.
Cascades of swirled clouds included in a beryllium treated blue sapphire.
Limited supply and strong demand also fluctuate burma neelam stone price upto a certain extent.
As a genuine gem some inclusions are expected to be found in burmese sapphire.
Inclusions in unheated sapphire from burma myanmar.
Surface diffusion treated blue sapphire.
A magnified image showing a cluster of rutile silk in an untreated burmese blue sapphire.
Colored stones are generally far more saturated with inclusions at a level of 10x magnification than diamonds.
Blue zones enriched along facet joints and girdle.
The top spectrum o ray is offset of 0 1 absorbance unit for clarity.
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.
Folded fluid feathers and fingerprints are the most common inclusions in unheated burma sapphires.
This feature is found in a beryllium treated blue sapphire due to high temperatures applied in this process.
Mining of burma sapphire gemstone.
