A very beautiful doubly terminated crystal of beryl that grades from heliodor near the top, to aquamarine near the base.
Despite this being my fourth trip to the country, I had only ever come away with a few beryl samples previously-- usually nothing particularly gemmy. I don’t think it would be an exaggeration to claim that the pieces recovered from this pocket are probably some of the best beryl specimens to come from Madagascar in the last 10-15 years.
There is some sub-surface pocket dirt-- this is visible more on one side than the other. I have included pictures of both sides (to see the dirtier side, see the pictures below the description and at the very bottom). It is somewhat difficult to get the color right in the pictures, so I have photographed it with a few different backgrounds-- the super bright image is an iPhone picture in direct winter sunlight-- as you can see, the thing really glows if you light it correctly, and the effect can be recreated with a well-placed LED.
A spectacular fluorite from Mt. Xuebaoding. This locality is
best known for its scheelites and aquamarines, and while they are encountered considered
to be something of a rarity, good fluorite is occasionally encountered here as well. This one has a
large, very clear cube perfectly positioned on a muscovite matrix. The edges
and corners are super sharp, and there is a tabular aquamarine positioned
beneath it. The side crystal has damage, the main one is nearly perfect, save one small, nearly invisible chip.
I have seen larger, colored fluorites from this locality in the past, but this is the best colorless one that I have personally seen. Both its size and the degree of transparency (slightly blurred, but you can see to the muscovite beneath) make it stand out among the usually smaller, frosted, broken crystals that usually come from this location. Truly a top specimen from this locality!
A cabinet aquamarine from Nagar, with a 6.5x 4 cm cluster of gemmy and terminated blue aquamarine crystals nicely centered on an albite matrix.
This piece is rather unusual, in that the right-facing sides (and only the right-facing sides) of all the albite crystals are coated with a druze of muscovite.
Overall, this specimen differs greatly from the standard opaque-ish blue aquamarines that we have all grown so accustomed to seeing. This piece was found around 2002, and is from my personal collection.
It is somewhat difficult to get the color right in the pictures, so I have photographed it with a few different backgrounds-- the super bright image is an iPhone picture in direct winter sunlight-- as you can see, the thing really glows if you light it correctly, and the effect can be recreated with a well-placed LED.
One of the surprises at Huanggang was the presence of aquamarine crystals. Although the mine cluster is exploiting a skarn, there is a pegmatite intrusion present. It is from that pegmatite that these aquamarines have been coming.
This is the largest single crystal of aquamarine that I have seen from the location. About a year and a half ago there were a few clusters available, but no more were found. Along with those clusters, I would consider this to be one of the more notable aquamarine examples from the location, typically the crystals stayed under 5 cm, with 6.5 cm being considered very large.
The termination is deep blue, the rest (as with all of these) has a whitish rind-- probably due to etching that is causing the light to diffuse
A nice, saturated orange scheelite crystal siting on a
muscovite matrix, accompanied by a quartz crystal and a small aquamarine near
the base.
One of the surprises at Huanggang was the presence of aquamarine crystals. Although the mine cluster is exploiting a skarn, there is a pegmatite intrusion present. It is from that pegmatite that these aquamarines have been coming.
This is a rare matrix example, one of only about 3 that I have seen, and I have to say its overall condition is better than either of the others. The aquamarine is terminated, and of a decent size-- the others (on matrix) were basically match-stick width, and the quartz crystals on which they rested were in rough condition. Again, that contrasts to this piece, where the smoky quartz is fully terminated with lustrous lateral faces.
The termination is deep blue, the rest (as with all of these) has a whitish rind-- probably due to etching that is causing the light to diffuse.
A beautiful aquamarine specimen from Mt. Xuebaoding, perhaps
best known for its spectacular scheelites.
A thumbnail specimen hosting a pale tabular aquamarine crystal on a matrix of feldspar and muscovite. Unlike most other aquamarine localities that produce prismatic crystals, Mt. Xuebaoding is known for its tabular examples.
The locality was most productive in the early 90’s, and while specimens continue to trickle out, these days the quality and quantity are relatively low. Matters are not helped by remoteness of the mine (which unlike many other Chinese mines is not a large-scale ore operation), the fact that it borders a Panda reserve, or the 2008 earthquake. Along with good aquamarine, the locality has produced the world’s best scheelite and kesterite.
A light blue, terminated aquamarine crystal from the northern areas of Pakistan.
A terminated aquamarine crystal from Huanggang. Interestingly enough, there is a pegmatite running through the main skarn body, which is where these are found.
As with all of these, there is an outer light blue rind that conceals a deeper, more translucent core (this core has no effect on the appearance of the piece...)
The bottom is etched, not fractured, so technically this is double terminated