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Malaya Garnet |
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The
Story |
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y
A
day of July 1996 whereas I stopped in a small village in Madagascar; one presented
samples of a strange stone to me.
At first sight its color could reminds certain zircon, but I
quickly identified it as garnet.
After some palaver, one led me to the place of the discovery.
I must acknowledge that I already knew the inhabitants with whom we
tied friendship the previous year.
On the spot, a notch of about one meter fifty in a white color rock
had created a not very impressive hole.
But, according to its authors, it was particularly painful to
produce it with iron bars only.
I readily believed them after to be approached to the rock.
Some particles of this stone to the orange - pink-brown reflections
remained taken in the bedrock.
I encouraged my friends to be still sought. |
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The
first samples extracted from a not disaggregated
leptynite did not exceed 3.15 cts. after |
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cutting.
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The observation under day light and incandescent light showed
a clear difference in color.
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Its
change, from the champagne color under daylight, to an intense red for
some, or to |
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pink-orange for others is due to chromium and vanadium
traces. |
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This characteristic
confers an attractive aspect on these
gems. |
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Other samples were orange-yellow and did not change a
color under the various sources of lighting. |
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Unfortunately, the very hard and
compact rock in this
place, did not allow to extract many stones |
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from
it, and the occurrence was
abandoned a few weeks after its discovery. |
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Opposite,
first samples cut in 1996 showing a change of color.
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Above, an orange malaya found also in the |
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primary occurrence. (It does not change a color)
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This
is two years later, in September 1998 exactly, that returning in the small
village, the |
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samples
more or less similar to those which I made cut in 1996 were found. They
were turbid because of the fine rain of small inclusions they contained.
Their color was definitely more orange than malaya garnets from the
first occurrence.
Indeed, they did not come from the same place.
This is a little more than one kilometer of distance that the elluvionnar
deposit was discovered. |
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I
was immediately conscious to be the witness of a rare moment in the career
of an impassioned |
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person
for precious stones. |
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At
this time
orange garnet
fever
was launched. |
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The stone did not show almost any more
change, its champagne-orange color at the day |
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was
simply reinforced in a
vivid orange or for other elements in an orange-red under electric light. |
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This type of garnet is a pyrope-spessartite also containing
vanadium and chromium traces. |
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On the totality of Malaya extracted, a small part was
pure, but much showed typical inclusions of |
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this stone.
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Initially networks of rutile needles and strain patterns were often
present, and inclusions of |
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graphite
accompanied them.
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Negative crystals and, quartz,
apatite, monazite and zircon had
been also invited during the |
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growth
of the precious malaya garnet.
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| Here, the first pyrope-spessartite cut in 1998.
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exceptional by the quality of
its product and also by the fact that it was
the second deposit in |
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the world to deliver
this type of Malaya garnet. |
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Here, one of the single intact garnets
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found in the occurrence.
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Its unusual
stacking shape must be noticed. |
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Refractive Index: |
1.73 - 1.81 |
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Chemical Composition: |
[Mg3
+ Mn3]AL2(SIO4) |
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Hardness: |
7
- 7.5 |
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Density: |
3.65
- 4.20 |
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Crystal
Group: |
Cubic |
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| Almandine |
Fe3Al2(SiO4)3 |
| Pyrope |
Mg3Al2(SiO4)3 |
| Spessartite |
Mn3Al2(SiO4)3 |
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Above, the
single phlogopite mica found in the
neighborhood
of the deposit at that time, it is
still
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in
its gangue.
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Of
transparent quality, it shows a similar color to that of malaya garnets.
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All of the pictures on this
website have been shot by
gggems.com
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| Text written by
Alain
Darbellay |
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