osirisgems - handfaceted quality-gems:

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Russian manmade Co-Spinel
Not only the ex-GDR labs made many different synthetic gems. From Russia also some fine examples are known.
This one is dotted with Cobalt to receive this saturated royal blue colour. The fascinating red flashes along the reflections are visible in sunlight and very special in incandescent light but are a bit more decent compared with the GDR ones.
This design is one of my many hemispherical designs based on a hexoganol shape. While this big baby is of darker colour it still glows through all facets and from most point of views and the red flashes are fighting through the dominant co-blue body colour.
19.31 cts.
, 13.9 x 13.2 mm

Russian manmade Spinel, 19.31 cts.

Ceylon Sapphire
Is it worth to recut a boring 3.08 cts. Ceylon Sapphire to a
vibrant 0.93 cts. gem, to accept a loss of around 70%?
I say YES, definitely, while I wish I had the original rough to facet and avoid so a lot of loss.
The first pic shows the weak and silky appearance of the flat gem  (around 8.5 x 5,3 mm). In the second pic the silk is still existent but sue to a lot of sparkles and a more saturated colour there is much higher brilliance.
VSI clarity with several tiny internals and onlx a decent amount of silk.
0.93 cts.
, 5.6 x 4.9 mm

Ceylon Sapphire, 0.93 cts.
Ceylon Sapphire, 0.93 cts.

Pakistan Sphene
Perfect clean Sphene fom Pakistan. Son't let the unbelievable Dispersion of this gem confus you. The bodycolour is a saturated green and the dispersive sparkes have colours like yellow, red and green. The rough is untreated and was found in Pakistan and was purchse in Sainte-Marie-aux-Mines from our tadzhik dealer who often has some sample of very fine and rare gems.
The proportions of the rough forced me to orientate in a way the birefringence shows fully up but on the other hand it too shows the full dispersion. Very hard to make exact pics from such a gemmological fireworks!
Additionally there is some colour shifting from more yellowish green in incandescent light to much more green in daylight and even in LED light.
0.95 cts.
, 5.9 x 4.0 mm

Pakistan Sphene, 0.95 cts.  

Madagascan Teal Sapphire
Another fine example of t he new Sapphires from the gem-isand Madagascar. Found - as most Sapphire & Rubies from Mada - in the steep mountains of the east coast. Here you can see some very decent internals, even enough not to detract its brilliance and sparkles but enough to prove its natural origin and being free from any treatment.
Anyway irl this big beauty has a much more vivid teal colour compared with this poor pic!
2.39 cts.
, 7.5 x 5.8 mm

Madagascan Teal Sapphire, 2.39 cts.  

Blue Topaz
The second rescued Blue Topaz in this newsletter. Was a deep trillion with 17.90 cts. with lots of abraisons. The colour is lighter than swiss blue but darker than sky blue. Some tiny, eye-nvisible internals are in the pavilion, treated.
6.22 cts.
, 10.8 x 8.3 mm

Blue Topaz, 6.22 cts.  

Ampanihy Pastel Pyrope
It was not easy to find, to catch (and to pay!) this outstanding gem. A rough marble with a diameter of around 17 mm weighing 10.4 gram and was catching my eyes. It had the perfect shape for my "nearly round trillion" and here is the result: high saturated magenta colour, vvs clarity and an astinishing size for a Pyrope Garnet.
18.54 cts.
, cts. 14.7 x 12.7 mm

Ampanihy Pastel Pyrope, 18.54 cts.  

Arusha Tanzanite
Another big Liquid Flower gem cut from a very special rough: a dichroic Tanzanite with light purplish bue and violet hues.
The rough was heated and this fascinating gem is a bit lighter that shows the LF-pattern so well.
12.83 cts.
, cts. 14.8 x 9.4 mm

Arusha Tanzanite, 12.83 cts.  

Mananjary Zircon
Again a new roundish trillion design, this time with an virtually colourless Zircon from Mananjary in Madagascar.
I caught the optical axe with no birefringence so well that you won't see any doubled rims while looking through the table but all other facets shows the double-rims. Needless to say that this gem has a strong dispersive power in any direct light (pic was done as usual in daylight using a softbox to show as many details as possible).
Flawless clarity.
2.81 cts.
, 7.7 x 6.7 mm

near colourless Zircon from Mananjary, Madagascar, 2.81 cts.  

Bolivian Ametrine
2020 was such a grey year so it was my desire to end the year with strong colours. Cut on Sylvester from a giant rough with around 70 gram (like a small egg!) this is one of my heaviest and most beautiful  Liquid Flowers. High colour saturation, flawless and just unique.
63.57 cts.
, 25.8 x 19.0 mm

Bolivian Ametrine, 63.57 cts.  

Marolambo Rhodolite
A fine medium to dark red Marolambo Garnet in one of my mew trillion designs. Near flawless clarity, just some tiny of the marolambo typical internals, absolutely eye invisible.
2.81 cts.
, 8.0 x 6.2 mm

Marolambo Rhodolite, 2.81 cts.  

Bolivian Ametrine
Ametrine? Yes Ametrine!
Not the typical orientation with sharp colour boarders borders but with a gradual colour transition and a mixed savannah-like "body"-colour. Looks decent and elegant and is surely very hard to find even in a highend custom cut gem, flawless.
8.84 cts.
, 13.5 x 10.5 mm

Bolivian Ametrine, 8.84 cts.  

Habachtal Smoky Quartz
This design is the newest and 5th member of the million-times copied Trinity series and got the name "Trinity Trilliant". WHat do you guess how long it takes until we see the first copy? ...
Flawless clarity, extraordinary polishing just the best faceting & polishing quality and the first of its kind from a well known european origin (Prehnitinsel, Habachtal at around  7500 feet).
3.15 cts.
, 9.4 x 8.3 mm

light champagne Smoky Quartz from Habach Valley, Austria, 3.15 cts.  

Medium to light cornflowerblue Sapphire from Sri Lanka. Excellent clarity with only some tiny Rutiles that tells clearly the natural origin of this gem as well that was no heatment used. There is a slightly purplish hue visible also the even and parallel growing struture in the girdle level.
A new technique of polishing was used to get the highest luster and brilliance to this lovely beauty.
A cushion design from Marco Voltolini added with some extra facets was used for this classical gem.
3.58 cts.
, 7.9 x 7.0 x 7.0 mm

Ceylon Sapphire, 3.58 cts.  

Salmon Pink Tourmaline
IF Tourmaline in beautiful salmon-pink colour. This is a "rescued" gem from an old and long worn gem and was faceted to this sparkling beauty. There was a lost from 5.14 cts. to 3.13 cts. and it has now full reflections from most angles.
3.13 cts., 9.5 x 6.9 mm

salmon pink Tourmaline, 3.13 cts.  

Mananjary Zircon
Light champagne Zircon form pacifics gem island Madagascar, exactly from Mananjary. Untreated, near eyeclean and soo fiery with its extremely strong dispersion.
7.37 cts.
, 11.5 x 9.6 x 8.0 mm

Mananjary Zircon, 7.37 cts.  

Arusha Tanzanite
When you hear "Tanzanite" which colour you are thinking of? Most probably something between purplish and dark purple but surely this golden yellow. Anyway untreated Tanzanites can show a wide variety of differenthues and colours. When I have the chance to catch some unheated Tanzanites I take it, it´s always a great addition in every collection and I like faceting these. Eyeclean.
1.08 cts.
, 5.6 x 5.6 x 4.7 mm
Arusha Tanzanite, 1.05 cts.  

Bolivian Ametrine
A softer coloured Ametrine inspite the usual designs in round brilliant called "Gamma Brilliant" from Jeff Ford.
Due to the point of view you can little or more of the yellow part while the amethyst colour is dominant.
5.75 cts.
, 12.0 x 8.6 mm
Bolivian Ametrine, 5.75 cts.  

Pink Sapphire
IF-Sapphire from Ilakaka in Madagaskar in a fine pink colour. This design is the "Rands Cut Corner Rectangle #1" from Dan Clayton.
0.68 cts.
, 5.5 x 4.0 x 3.9 mm
Ilakaka Sapphire, 0.68 cts.  

Sambia Amethyst
Medium to light saturated Amethyst from Sambia. Eyeclean clarity in this "IllusionPhase" gem.
10.25 cts.
, 14.1 x 11.4 mm

Sambia Amethyst, 10.25 cts.  

Mocambique Hessonite
Reddish-orange Hessonite from Mocambique with all typical internals of the multicrystalline Grossulare-variety.
2.44 cts.
, 9.1 x 5.7 mm
Mocambique Hessonite, 2.44 cts.  

Arusha Tanzanite
When you close your eyes and think about Tanzanites you surely see pruplish blue or violettish blue gems?
When you see this gem you surely don´t think about Tanzanites. Anyway the tanzanion Zoisite is the ultimate chameleon in the mineral world. Here you can see some "savannah"-aspects mean yellowish and violett to golden hues as well as greyish and greenish colours. It is an unheated gems with its full trichroitic potencial and every little turn shows other hues. It´s just a chameleon!
2.96 cts.
, 8.6 x 7.1 mm
Arusha Tanzanite, 2.96 cts.  

Tanzanian Rhodolite
The newest member in  the "Pipistrelli"-family done as a high dome or hemispherical design. Unusual reflections in this dark but not too dark Rhodolite from Tanzania.
2.71 cts.
, 7.0 x 6.9 mm
Tanzanian Rhodolite, 2.71 cts.
Tanzanian Rhodolite, 2.71 cts.

One of my favorite designs is the Hexpo. There is just one thing bad with this beautiful design, it´s not mine! Tom Herbst did over 50 years ago without gemcad or gem cut studio. A really passionated designer like Tom Herbst don´t really need it. It has one of the highest light returns with around 93%!!! and makes a gem just perfect.
This very light icy bluegreen Aquamarine was faceted from the same crystal like the 7.44 Bar Square 3/4. A good friend of mine bartered the rough against some coloured Oregon Sunstones, thank you Georg G.!
Flawless clarity.
10.25 cts.
, 12.8 x 11.4 mm

Aquamarine, 10.26 cts.  

Tanzanian Hessonite
Nice little tanzanian Hessonite in mandarin like colour. It is a monocrystalline material but has a littl crack, so better not to be used for setting.
0.51 cts., 5.3 x 3.3 mm
Tanzanian Hessonite, 0.51 cts.  

Val Val Smoky Quartz
After years it was time for y new NEO. It´s often hard to find a rough with a good shape for special designs like this one. The rough is from Switzerland, Surselva or more specifically from Val Val. Except on some fingerprint internals at 6 o'clock it´s completely clean. If you have very sharp eyes you might notice it.
7.63 cts.
, 15.4 x 8.6 x 12.3 mm
Val Val Smoky Quartz, 7.63 cts.  

Ampanihy Rhodolite
Dark magenta red Rhodolite from Ampanihy in Madagascar. Flawless clarity and perfect cut in this Pipistrelli gem.
0.79 cts.
, 6.2 x 3.8 mm
Ampanihy Rhodolite, 0.79 cts.  

Arusha Tanzanite
Supersoft coloured Tanzanite. Nearly white with a little violett to pink. The "Flandriant-design works well in this little gem and makes an intense spakle. Some small and really hard to detect internals (no foreign stuff).
0.80 cts.
, 5.3 x 5.3 x 4.1 mm
Arusha Tanzanite, 0.80 cts.  

Unbelievable Tanzanite
WOW! Ihave never seen a Tanzanite like this. 10+ cts. flawless, untreated and so many colours. I can see purple, gold, green, blue sometimes a little pink and from each view the colour changes and shift from daylight to incandescent light. If all this wouldn´t be enough there is a lot of dispersive potential in this super rare gem.
10.39 cts.
, 13.0 x 10.5 mm
Tanzanite, 10.39 cts.
Tanzanite, 10.39 cts.

Tanzanian Rhodolite
After a long time a new "Pelegrinischer Drachen" in tanzanian dark red Rhodolite. Perfectly clean and really good size.
5.30 cts.
, 17.7 x 8.9 x 6.3 mm
Tanzanian Rhodolite, 5.30 cts.  

Antsirabe Tourmaline
Copper-coloured Tourmaline from Antsirabe in Central Madagascar. It was only a small pocket in pegmatite that brought these unusual Tourmalines. Some internal cracks otherwise clean.
2.61 cts.
, 7.5 x 7.0 mm
Antsirabe Tourmaline, 2.61 cts.  

Surselva Smoky Quartz
This is the brandnew "Palac Struga" design my 5th and (surely last) hemispherical design from this year. It is very much of the idea I always had in mind and am happy with it.
The Smoky Quartz is from the Surselva region in Central Switzerland and was found from Matthias Benz a Strahler also from my hometown Munich. Look at his website:
This beauty is near flawless, super brilliant and has a very light brownish hue.
12.36 cts., 13.3 x 12.8 mm

Surselva Smoky Quartz, 12.36 cts.  

Everybody knows the eastafrican polycrystalline  Hessonites with their glowing orange colour. This glowing is caused by numerously tiny crystals which were grown with no orientation. The same composition (Grossularite instead Grossulare!) happened here with this fine stuff from the Umba-Valley but without colour.
4.08 cts., 10.7 x 7.0 mm

Leuco-Grossularite from Umba-Valley, 4.08 cts.  

Tanzanian Rhodolite
The 3rd hemisperical design from last week!
A near flawless dark-red Rhodolite from Tanzania with 130 facets and a 13fold base. It took me two days to facet and polish all these tiny facets.
But the result says clearly it was worth doing so!
7.49 cts., 10.0 x 10.2 mm

Tanzanian Rhodolite, 7.49 cts.  

Val Val Smoky Quartz
This is a new hemispherical design faceted on a perfect piece of Smoky Quartz from Val Val in Switzerland. A total of 99 facets stands for lots of sparkles to all directions. It belongs with its 11-sided shape to my prim number series, a kind of geometric with a completely different way of reflective properties.
14.08 cts., 14.5 x 13.7 mm

Val Val Smoky Quartz 14.08 cts.  

Vatomandry Sapphire
Very unusual Sapphire from the Vatomandry region at the eastcoast of Madagascar. Any inclusions? Yes, some Rutile needles and sagenittic Ghost Rutiles. Small enough to be invisible to the naked eye, but visible under magnification to show its natural and untreated state. The colour is a mixture from green, blue & grey in daylight while incandescent light turns the colour more to greyish. A very special gem for the collector and maybe a challenge for the jeweller.
2.02 cts., 7.9  x 6.4 x 5.7 mm

Vatomandry Sapphire, 2.02 cts.  

Bleu de Auvergne-Sapphire
One of the super rare Sapphires from Massif Central region in the french Auvergne. Saturated greenish-blue (bleu-de-Auvergne) colour with highest possible clarity: a magnification of 45x won´t show the tiniest internals. Found it little creeks in this remote area of thousand volcanoes and extraordinaire cheese and sausages. What you see is the c-axis colour while the b- & c-axis colours are more greenish. BTW absolutely untreated in any way, no need for doing so after it´s such a beauty!!!
0.40 cts., 4.5 x 3.8 x 3.7 mm

Auvergne-Sapphire 0.40 cts.  

Ampanihy Pastel-Pyrope
My favorite gem since the Munich Show last year!
The Pastel-Pyrope from
Ampanihy in Madagascar in a round brilliant-type design from Lothar Reimschüssel
with some additional facets.
Light but strong saturated and soo lively!
0.78 cts., 5.5 x 3.7 mm
sold, but similar roughs are in stock
Ampanihy Pastel-Pyrope 0.78 cts.  

Nice little Sapphire from Mambilla in Nigeria. Medium blue with some greenish aspects. Eyeclean with slightest haze of rutile silk. Just natural as it was found. Ezbar Square design with its flat crown.
0.46 cts., 4.2 x 4.2 x 3.1 mm
sold, but similar roughs are in stock

Mambilla-Sapphire 0.46 cts.  

Chinese Black Spinel
Just black, the deepest imaginable black of the gemworld. The iron Spinel with its suberp shine and absolutely no transparency in a sligtly modified SRB-design.
5.94 cts., 10.7 x 7.5 mm

Chinese Black Spinel / Pleonast 5.94 cts.  

Tanzanian Rhodolite
Pure red and very big Rhodolite in my "Opposed Bar" version. Flawless and absolutely no colour change. Bought the rough this year at the Munich Show and was happy to find a rough Garnet with the perfect shape for this design.
8.91 cts., 17.1 x 6.7 x 7.5 mm

Tanzanian Rhodolite, 8.91 cts.  

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last update: Sonntag 26. September 2021