寶啾寶石報報:5 Things to Know About … Trapiche Gems
達必茲寶石知識
Emerald trapiche stars from gemstone dealer Mayer & Watt, weighing (from left to right) 9.97 carats, 7.37 carats and 7.75 carats
寶啾寶石坊也有裸鑽及有色寶石的銷售服務,也可以代客設計加工,歡迎來詢問,寶啾寶石坊提供最好的服務及最佳的價位。
Line 可詢問:http://line.me/ti/p/ZmdIHukNFINovember 7, 2017
When it comes down to it, I think what’s most appreciated about a great
colored gemstone is the fascination at what Mother Nature created--how
the color is so vivid or saturated, how they can grow so large, how they
tell the story of the Earth.
Trapiche gemstones are a great
example of this. The geometry and symmetry of the stones created by
their rayed patterns are truly spectacular and valued for both their
beauty and uniqueness.
Trapiche emeralds were first on the
scene, at least according to written records, with the name adopted
because of their resemblance to “trapiche de caña de azucar,” the
Spanish name for the six-spoked cogwheel used in sugar mills.
Beyond
the almost-immediate fascination trapiches spark with their beauty and
rarity, there’s plenty to know about these stones, starting with these
five points below.
1. Trapiche gems have equivalent crystallographic growth patterns separated by boundaries of inclusions.
According to the Gemological Institute of America’s “Gems & Gemology,”
these boundaries intersect at a central point or extend from a central
core, creating a pattern that, often, resembles a wheel.
Trapiche
gems also are characterized by their high symmetry--which appears in a
hexagonal manner, for example, for emeralds--and feature inclusions of
organic matter.
2. There are a number of gemstones that can be found in trapiche variations.
The
spoke patterns that define trapiche gemstones are best known in the
popular green beryl, but one can also find trapiche corundum, garnet,
tourmaline and chiastolite, though chiastolite only exhibits four arms, InColor said.
3. The history of (finding and studying) trapiche is long.
Or at least for emeralds, that is.
According to Gems & Gemology, Colombian trapiche emeralds were first described by French mineralogist Emile Bertrand in 1879 at a meeting for the Société Géologique de France, though they did not yet have a name.
The
first known use of trapiche emeralds in jewelry is in an early-19th
century gold ring by an unknown artist that was bequeathed to the Victoria & Albert Museum in London.
Trapiche rubies from Burma, meanwhile, were first documented by the GIA in 1995, according to InColor, but the stones also have been found in Guinea, Kashmir, Pakistan, Nepal, Sierra Leone and Tajikistan.
Trapiche
sapphires first appeared on the gem market in early 1996, when samples
were offered in Basel by a Berlin gem dealer, and have been found in
Australian, Cambodia, China, France, Kenya, Madagascar, Nepal, Sri
Lanka, Tanzania and more.
4. Supply and demand have stayed fairly consistent.
As with any rare gemstone, trapiches are still pretty hard to come by, goldsmith and jeweler Paul Farmer said.
But
there may be an opportunity, however big, with pieces or partial
trapiche stones, he said, which can make unique pieces such as butterfly
wings.
He sees some opportunity in this area as more
lower-quality gems come onto the market, noting that they can “make fun,
inexpensive pieces,” he said.
Jeffery Bergman of Primagem said emerald trapiche continue to be the most available and in highest demand of all trapiche gems.
Trapiche
rubies from Burma, meanwhile, tend to be mostly under 1-carat in size,
he added, and rather dark, requiring thin slicing to get the best color
and trapiche pattern, which has had the effect of restricting their use
in jewelry.
Bergman also said fine trapiche sapphires from Mogok, Burma are still in high demand with very limited supply.
“Most
of the material on the market is semi-translucent to opaque, and the
occasional gemmy translucent example fetches several thousand dollars
per carat,” he said.
He added that Vietnam has been producing
some semi-translucent-to-opaque trapiche sapphires ranging in size from 5
to more than 50 carats and reasonably priced at about $50 per carat for
finer pieces.
Simon Watt of gemstone dealer Mayer & Watt
also said that supply hasn’t changed much, with the fine stones still
hard to come by and with the bulk of demand from gem connoisseurs.
What’s more, “There’s never enough (supply) for the demand to be so great,” he said.
In fact, he hasn’t seen a resupply of trapiche sapphires in the past year.
The
difference for him, though, is that he’s been marketing the material
for years, and it’s paid off with an increased buzz around the
gemstones.
5. Prices have increased.
The
downside to the buzz he’s created, Watt said, has been a price increase;
he said he’s seen prices double in the past five years for fine
material.
This is not to mention the rarity of the stones keeping prices high.
Bergman
also noted that prices of emerald trapiche have doubled and tripled
over the past several years as well-known jewelry designers like Selim
Mouzannar, Omi Prive and Erica Courtney have incorporated them into
award-winning designs.
Still, Watt is hopeful prices will start
leveling out, if nothing else, and notes that when he does get trapiche
stones, he has rarely has trouble selling them.
“The end user is
really looking for something very unique that blows their mind.
Trapiches do just this because you look at them and think, ‘Nature is
truly incredible, isn’t it?’”
These cufflinks from Ricardo Basta Fine Jewelry feature two trapiche sapphires totaling 12.83 carats, set in 18-karat white gold and accented with 420 white diamonds and 278 black diamonds ($12,000).