Winter 2014 - Volume 50, Issue 4
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Margaritologia
Pearl Newsletter: Margaritologia

Margaritologia, a quarterly newsletter on pearls, was recently launched by Elisabeth Strack.

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8.41 ct pear-shaped Fancy Vivid purple-pink diamond
Record Prices at Gem Auctions

Auction price records were broken in late 2014 as ultra-wealthy buyers vied for rare, important gemstones.

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Dyed green marble imitating jadeite
Dyed Green Marble Imitating Jadeite

What appeared to be high-quality jadeite was actually dyed green marble with calcite as the main mineral.

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Spinel’s visible spectrum
New Deposit of Black Opal from Ethiopia

The Stayish mine in Ethiopia’s Wollo province has been producing black opal since 2013.

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Verneuil-grown synthetic spinel with unusual short-wave UV reaction
Unusual Short-Wave UV Reaction in Synthetic Blue Spinel

A blue synthetic spinel grown by the Verneuil process displayed the short-wave UV reaction of a flux-grown sample.

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Beryl and topaz doublet resembling emerald
An Unusual Doublet Set in Fine Jewelry

An oval-shaped faceted stone resembling an emerald proved to be a doublet with a beryl top and a topaz bottom.

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Parcel of natural pen pearls
The First Identified Non-Nacreous Beaded Cultured Pearl

A report on what appears to be the first non-nacreous beaded cultured pearl examined by a laboratory.

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Online Diamond Sales 17% of U.S. Market

According to a recent De Beers study, online sales of diamond jewelry comprise about 17% of the market in the U.S.

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Composite ruby rough
Unusual Composite Ruby Rough

In this composite, synthetic ruby rough attached to two natural ruby slabs was fashioned to imitate natural material.

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Pakistani demantoids
Demantoid from Baluchistan Province in Pakistan

Nine demantoids reportedly from a new deposit in the Khuzdar area in Pakistan’s Baluchistan province were recently examined.

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