For a gem dealer nothing takes the place of going to the mining areas. The two gems you see pictured are ones we found by going to the right place. The cut stone is one piece of a small lot of 3 pieces we bought many years ago in Brasil. The color is truly amazing and truly a collectible color. The stone is over 10 carats in weight. According to prices seen fairly recently for similar (but not quite as good) gems—it is worth several thousand dollars per-carat. This is a color and size and clarity in Imperial Topaz very seldom seen available for sale
A number of our established clients know about spinel. Spinel is a relatively unknown gem. It has been unknown at least partly because it is very rare. It is chemically related to corundum (ruby/sapphire) in that spinel and corundum both have aluminum as a major component. In corundum is largely aluminum while spinel has both magnesium and aluminum in it. Due to its rarity spinel can be quite expensive. Due to a lot of writing about spinel in the last 10 years people’s awareness of spinel is greater than ever driving up spinel prices even more. Even back in the 1980’s large red spinels could reach prices in the thousands of dollars per-carat. One example of that is the gem in the photo. The gem in the photo is a little over 12 carats. That gem came through our hands back in the mid-1980’s and at the time was worth about $3,000-per-carat. You can only imagine how much it is worth now!!!
Over the past years and especially over the past decade much has been written about spinel so there is at least some awareness of the gem. When we were first in the business spinel was only known to come from Sri-Lanka and Southeast Asia—found amongst the ruby and sapphire deposits. Since that time some wonderful gems have come from East Africa and the Pamir mountains in Central Asia—a mountain range in confluence with the Himalayas.
Just a glance at the accompanying photo and you understand why these relative newcomers became so popular so quickly. Tanzanite and Tsavorite were both “discovered” in 1967. In 1967 these gems from East Africa were brought to the attention of European and American gem buyers and quickly caught on. Why—the color of each has so much immediate eye-appeal.
Tsavorite is much more rare that Tanzanite and comes in smaller sizes. So, Tsavorite has never been quite as well known. Also, Tsavorite has always brought much higher prices—size for size in comparison. But think about it. Tsavorite is a green garnet. That is very exciting. At least 100 years earlier a green garnet was discovered in Russia. That gem is Demantoid Garnet. Demantoid is a different type of garnet with its own interesting properties.
Tanzanite hit the world with an almost sonic boom. The color and the comparatively larger sizes were an instant hit. At the time Tanzanite made it to Europe and the USA sapphire of good color was almost impossible to find. Tanzanite was initially promoted as a Sapphire substitute. However, the look of Tanzanite is distinctly different and unique. Having its own “look” has put Tanzanite in the position of being appreciated for its own sake. Sapphire in good colors and clarity and size is still an expensive proposition but does have the advantage of being 9 in hardness and suitable for daily wear.
Discussing the trade-offs between gems brings us to one issue of being a collector. Just like a mom loves all her kids a gem collector loves all the gems—differently but equally.
In our recent post on Rubellite there were some follow up questions about the color of Rubellite. First of all different countries seem to have different understandings on the subject. The round stone pictured in this post may help us towards clarity. In almost any country other than the USA this stone, despite being pink, would be called Rubellite. There are country-specific perceptions regarding desirable color in gems and the names attached to them as well. Why some people would name this very pink gem a Rubellite is due to the type of tourmaline crystal that would produce this stone. Rubellite crystals tend to look different from other types of tourmaline crystals. In addition to a lighter color gem, as in this picture, a Rubellite mine will also produce darker Rubellite crystals–when a mine happens to be producing. A pink Rubellite will generally be a more pure pink than other pink tourmaline gems. Almost all other types of pink tourmaline will have at least ever so slight to significant brownish overtones and have the possibility of being very clean to flawless. So it’s a choice of color vs. clarity. So far color has won—Rubellite has always been more expensive than pink Tourmaline.
As we mentioned in the last post the darker color of Rubellite as compared with Emerald tends to obscure the inclusions so that many Rubellite gems do really show a lot of inclusions to the naked eye. As you can see in this post’s photo the lighter color does not cover the inclusions and they are quite readily visible.
Writing just recently about emerald it made me think about Rubellite. Rubellite just like Emerald is considered to be a Type 3 gemstone. Type 3 gemstones are known for their having eye visible inclusions. The fact of Rubellite and Emerald is this: if a person wants the beautiful color of these 2 gemstones they have to put up with the inclusions. We think it is worth it!!! One of the differences between Rubellite and Emerald is that many Rubellite gemstones are dark enough that the inclusions are not readily seen. What is seen is the amazing red color and some nice reflectivity from the bottom facets—beauty, all beauty.
Some people might wonder why I did not use the term Rubellite Tourmaline. That is due to the fact that Rubellite is a color of tourmaline. “Rubellite Tourmaline” is a redundant term. In any case Rubellite is a favorite gem of mine. Rubellite was my first important color in tourmaline. Early on in my career I was able to cut some Rubellite from one of the tourmaline mines in Southern California shortly after a nice pocket of it was found. This coincided with my entry into the gem business. This was in the early 70’s. Much of this material was heavily flawed as is much of the Rubellite ever found in the world. This is true of Rubellite and certain colors of Pink tourmaline.
I was lucky enough to participate in most of the big Rubellite finds throughout the world, one way or another, since the early 70’s. Southern California, Newry Maine, Jonas Limas (Minas Gerais, Brazil, late 70’s), Goais Brazil (early 80’s), Afghanistan (early 80’s), Nigeria (2000-2001), Mozambique 2010, and Undisclosed find happening right now. While each of these finds was Rubellite, each of them was a slightly different color. California material was quite pink, Jonas Limas was a little purple, Goais Brazil was very red but a little too dark in all but a few gems, Afghanistan was a little light and a little pink, Nigeria was perhaps the biggest quantity and best color overall—quite red, Mozambique was a little purple and Undisclosed is quite nice.
About 2 ½ months ago we wrote about an upcoming sale of a 100 ct. D/Flawless diamond at auction. Just last week the sale happened at Sotheby’s in New York. Reports are that the stone sold for a little over $22 million USD. The auction estimate was between $19 and $25 million. So, the stone’s final sale price exceeded the $19 million low end. In the last few years a number of high flying diamond sales have gone over the high estimate but not this time. Our only guess as to why is that 2 of the reputed 3 sources of ultra-high customers have their wealth based on oil which has had a price drop over the past few months. Compared with some other great gems it seems in some sense that the buyer got a bargain. A bargain few people can afford—that’s true—but a bargain nonetheless.
The good news is that the lower oil prices may very well help out the already strong U.S. economy. That is news more important to most of us who live here in the USA. Every time oil has climbed in the past 40 years economists have likened the price hike to a tax increase. Well then, it must be that lower oil prices can be likened to a tax cut for Americans. How great that is.
During the past 7 years colored diamonds have sold for much more per-carat at the major auctions than have white diamonds. The Pink Star “sold” at Sotheby’s for over $83 million. True, the sale fell through but the stone is now valued at $72 million. The Wittlesbach-Graff blue diamond sold for $31 million in 2008 when the financial sky was falling. The stone known prior to that sale was known simply as the Wittlesbach diamond. The famous jeweler Graff bought it in 2008, had the stone re-cut which improved its shape and color and then added a hyphen and his last name to the stone. Reports are that Graff resold the stone in 2011 for $80 million to the then ruler of Qatar.
Continuing with the adventures in colored diamonds the Graff Pink sold at Sotheby’s in 2010 for $46 million and the Christie’s Perfect Pink sold in 2010 for $23+ million.
It seems that the fancy colored diamonds have finally found their true place in the gemstone hierarchy.
The gem in our photo is an emerald cut diamond similar in many aspects of its appearance to the one in the story.
We traveled to an Emerald mine in Brazil with a group of people we were leading on a gem and mineral tour. The scene was straight out of a western in the 1850’s USA. A temporary “town” was set up along a rugged dirt road complete with bars, restaurants and general stores. Moto-cross motorcycles and 4 wheel-drive pickups had replaced horses and dark visqueen plastic replaced canvas to create tents but the people and their activities remained the same. Claims for miners were right next to each other. Many claims were in the little canyon we visited. With Emeralds being so valuable guns were everywhere and a bad accompaniment to the liquor sold in the bars. The day after our visit there was a shooting. No wonder that in Colombia there is a saying that the color of Emerald is red.
Where in the world is Emerald?
Emerald is a rare stone, especially in a good quality. However the following list is a list of places emerald has been found at one time or another. The extent of this list may qualify emerald as the rarest stone found in the most places. A good conundrum!
*Africa: Egypt, Ethiopia, Madagascar, Mozambique, Namibia, Nigeria, Somalia, South Africa, Zambia, and Zimbabwe
*Asia: Afghanistan, Cambodia, China, India, Kazakhstan, Pakistan, and Russia
*Europe: Austria, Bulgaria, France, Germany, Italy, Norway, Spain, and Switzerland
*South America: Brazil, Colombia
*North America: United States and Canada