Research Article Search Results
“Bubble Obsidian” from Armenia
An exhibitor at the 22nd Street show offers an unusual type of obsidian from Armenia.
Assembled Bead Cultured Half-Pearl
Investigation in the Carlsbad laboratory reveals a pearl submission is not mabe as initially believed.
Black Opal with Unique Play-of-Color
A black opal cabochon set in a ring displays vivid orange play-of-color.
Dendritic Patterns in Emerald
A partially filled fissure in an emerald exhibits patterns resembling natural foliage.
Green Jadeite-Omphacite from Guatemala
Bright green and nearly transparent jade from Guatemala, similar to jade from Myanmar, was available in Tucson.
Fancy Vivid Yellow HPHT-Grown Diamonds
A report on a submission of 26 yellow HPHT-grown diamonds from the Hong Kong laboratory.
Rose-Shaped Cloud Inclusion in Diamond
A cluster of cloud inclusions in diamond forms a petal-like structure resembling a rose.
Large “Rainbow Calcite”
CVD Laboratory-Grown Gem Diamonds from Plasmability
A report from the New York laboratory on colorless and near-colorless CVD gem diamonds produced by the Texas-based company Plasmability.
“Hummingbird” in Orangy Yellow Diamond
An omphacite inclusion surrounded by fractures in an orangy yellow diamond takes the shape of a hummingbird.
CVD-Grown Diamond with an Unusual Blue Band
An HPHT-treated CVD-grown diamond displaying a blue growth band is examined in the Mumbai laboratory.
New Nigerian Green Beryl Find
Vendors in Tucson exhibited Nigerian green beryl with concentrated color zones.
