Thursday, August 20, 2015

Rock on Morganite.

Rocks On: Pink’s popularity boosts morganite
By Brecken Branstrator for the National Jeweler
Print
April 24, 2015


Morganite, a member of the beryl family, comes in hues from pink to a more peach shade, such as this 6.65-carat cushion-cut stone from gemstone dealer Mayer & Watt.
Click through the slideshow to see 11 pieces of morganite jewelry.
New York--The influences of fashion trends and celebrity style on the colored gemstone world can be huge, particularly when it comes to bringing forgotten gemstones to the forefront or propelling classic stones to new heights.

When musician and actress Jennifer Lopez got engaged to actor Ben Affleck back in 2002, he proposed with a 6.1-carat pink Harry Winston diamond that was estimated to be worth $1.2 million.

After that, the popularity of pink stones rose rapidly--diamonds and sapphires in the hue have been having their day ever since and, along with them, morganite, said Simon Watt of gemstone dealer Mayer & Watt.



As pink shades begin to trend, especially for engagement rings, morganite offers a great value proposition for those looking for stone in the shade at a lower price point than sapphires.

“We’re selling morganite like hot cakes,” Watt said. “It’s selling very well right now. It could be a good option for an engagement ring for those looking for color, and it’s a nice hard stone.”

Robert Weldon, manager of photography and visual communications at the Gemological Institute of America and a colored gemstone expert, confirmed that they too have seen an increase of morganite on the market, especially over the last year or so.

He attributed part of the stone’s upward trend to Pantone’s naming of “Marsala” as the color of the year and the popularity of color blocking the lighter pink shades of stones like morganite with the darker hues of the earthy red marsala.



The pink beryl--which generally is lesser known than the two popular varieties of beryl, emeralds and aquamarines--was everywhere during the Tucson gem shows in February, given an extra boost in popularity and price over the past few years.

“There are always some colors that really resonate with customers, and I don’t know what it is but right now (morganite is) really doing that,” gemstone supplier James Alger, of James Alger Co., said. “It has a really pleasant color.”

A shifted focus

High-quality morganite offering the best saturation of color traditionally has come from Madagascar and Nigeria, but many said they are seeing less of that material available.

Rather, Brazil has popped up as the most significant source of morganite in the current market.

Since much of the material coming out of that country tends to have a brownish-pink hue to it, most of it has been irradiated to enhance the color. “I would estimate that about 99 percent of what’s on the market right now is irradiated,” Watt said.



Since irradiation mimics a process that can be done in nature, there’s no way to tell if the morganite has been treated in a lab. However, the irradiation process doesn’t change anything about the stability or hardness of the gemstone, so it continues with its rising popularity in the market.

Weldon too said that since much of the morganite currently available on the market is pretty uniform in color, and nature doesn’t generally make it that way that often, it’s a likely indication that much of it has, in fact, been irradiated.

He added that he’s been hearing that people are beginning to re-process the tailings from the mines where morganite previously had been found to see if they can find any stones in the discarded ore.

Steeper price tags

Regardless of origin, the price of morganite of all types has skyrocketed over the past few years, bridging the gap between the natural African material and what dealers are asking for the Brazilian stones.

Allen Dolberg of jewelry manufacturer Zoma Color said that he’s seen prices of the Brazilian material increase from an average of $15 to $20 per carat to somewhere between $50 and $70 per carat over the past year.

As demand and price increase, it stands to reason that supply should be waning, which is what a few of the gemstone dealers have been noticing of late.



“The Tucson show last year was ridiculous,” Dolberg, referring to the morganite supply. “There were pounds of it. This February, though, there seemed to be less. It seems that demand is using up supply.”

Dolberg notes that though he’s seeing plenty of morganite in finished goods, it’s becoming harder and harder to find the actual loose stones these days. “Dealers are seeing less available, and the price is going up, so we can deduce from that the supply is down,” he added.

The pinker morganite stones entered the market fairly recently, with availability popping up about 12 months ago, whereas Dolberg said he’s seen peach in larger numbers for the past five years.

The demand for and popularity of the peach hues has, in fact, fed into trends for other colored stones.

Over the last six months, Dolberg has seen tremendous demand for peach sapphires as well, which he believes comes from morganite rather than the other way around, as “no one really wanted it before.”

Watt too noted that there was a lot more peach morganite on the market for a few years but that more of the vivid pink has been appearing lately.

For Mayer & Watt, the highest demand currently for morganite in general is for 2- to 5-carat pieces, and the average price is around $45 to $95 per carat for their inventory.

Large and in charge



Morganite’s color comes out best in the larger stones, and that’s a good thing considering it’s one of the few gems that is more readily available in larger sizes.

“We’ve seen dealers with trays of 40- to 50-carat pieces of morganite,” Dolberg said. “You don’t often see those size in other materials.”

Despite that, the standard calibrated sizes still are what they sell most, he said.

The difference between what kind of morganite jewelers might be looking for depends on the customer type--for those looking for the finest quality and who want to be sure of what’s been done (or, rather, hasn’t been done) to their morganite, the natural material from Madagascar is all that will do.

For others, the irradiated material from Brazil provides a great color that’s worth the value.

No matter which jewelers pick, it doesn’t appear that the demand for morganite will be slowing down any time soon.

“We think pinks will trend more and more based on last year, and we’re sort of surprised at its success over the last five years,” Dolberg said. “We think it’s really established itself in the marketplace.”

Thursday, August 13, 2015

Some fun facts about the August Birthstone - Peridot

We all know that the birthstone for August is Peridot.  Living in the Southern Hemisphere, Spring is around the corner and Peridot's bright apple green loveliness makes her appearance once again in August.  The bright, apple green colour of this extraterrestrial gemstone reminds me of the new life that Spring brings to our dormant garden.



The ancient Egyptians mined peridot on the Red Sea island of Zabargad, the source for many large fine peridots in the world’s museums. The Egyptians called it the “gem of the sun.” Today this gem is still prized for its restful yellowish green hues and long history.

Large strongly-coloured, examples can be spectacular, and attractive smaller gems are available for jewellery at all price points.



Here are some fun facts about Peridot which until today, I did not know:



  1. Peridot crystals are found in meteorites: some rare extraterrestrial crystals are even big enough to facet as cut gemstones.
  2. Most gems are coloured by impurities such as iron. Peridot's colour is intrinsically yellow-green. Higher-quality stones have an intense colour.
  3. Peridot has extremely high double refraction: when you look closely through the gem, you can see two of each pavilion facet.
  4. Some peridot is ancient: 4.5 Billion years old!  It's found in pallasite meteorites, remnants of our solar system's birth.
  5. Gem variety of the mineral olivine: found in peridotite rock from the earth’s upper mantle.
  6. In 2005, peridot was found in comet dust brought back from the
  7. Stardust robotic space probe.
For more information on Peridot and other gemstones, please visit our website at www.touchstonegems.co.za

Happy Peridot month!









Monday, August 3, 2015

What causes the star-effect in star sapphires and rubies?

Star rubies and sapphires display a sharp six-rayed star which seems to glide magically across the surface of the gem when the latter is moved. This is caused due to an optical phenomenon known as "Asterism".

The star is best visible when the star sapphire is seen in a single light source such as sunlight and spotlight.

What causes the star-effect in star sapphires and rubies?


Star-effect or "asterism" is caused by the dense inclusions of tiny fibres of rutile (also known as "silk"). The stars are caused by the light reflecting from needle-like inclusions of rutile aligned perpendicular to the rays of the star. However, since rutile is always present in star sapphires they are never completely transparent. In fact, star sapphire and sapphire are one of those few gemstones which actually require inclusions (i.e. rutile).



Star sharpness

The star should be sharp (not blurry) and silvery / milky white. The best way to test the sharpness of the star is to look at the star sapphire in sunlight with the dome facing the sun. All six prongs should be straight and equally prominent. The complete star should be centered in the middle of the gem, but should also be able to glide effortlessly around the cabochon.



Clarity

Due to the presence of rutile (silk) star sapphires and rubies are never transparent. Most natural star sapphires found are translucent and opaque (mostly opaque).