Research Article Search Results
The Role of Silicon in the Color of Gem Corundum
Considers the previously unreported but critical impact of silicon on the coloration of gem-quality sapphire.
Pinctada maculata (Pipi) Bead-Cultured Blister Pearls Attached to Their Shells
A study on four Pinctada maculata cultured blister pearls originating from Penrhyn Island.
A Study of Sapphire from Chanthaburi, Thailand and its Gemological Characteristics
A report from the GIA Laboratory in Bangkok presents their findings on 59 blue sapphire samples obtained from a miner in the Khao Ploy Waen area, Chanthaburi.
Luxury Firms Adjust to the Era of Diminished Opulence
Baselworld 2017: Luxury jewelry designers rethinking blingy, gem-laden looks for more artistic designs. Pink Star diamond sells for $71 million.
US Retailers Continue to Cite ‘Challenging’ Environment, Synthetic Melee Detected
Economists recognize that the decline in middle class purchasing power is directly affecting some consumer products – including jewelry.
An In-Depth Gemological Study of Blue Sapphires from the Baw Mar Mine (Mogok, Myanmar)
GIA field gemologists visited Baw Mar operations in 2013, 2014, and 2015. In this study, we analyzed samples collected during two separate expeditions.
Sapphires from the Gem Rush Bemainty area, Ambatondrazaka (Madagascar)
The discovery of many fine quality sapphires in this area is opening a new chapter in the conflict between conservation and gem mining in northeastern Madagascar.
De Beers Optimistic as Sales Revive; Luxury Houses Remain Cautious
De Beers has largest cycle (sight) in more than two years. Luxury sales have begun to rise again after a negative year.
Atypical “Beading” in the Production of Cultured Pearls from Australian Pinctada maxima
In 2011, the authors began to see cases of low-quality natural pearls being used as unconventional “beads” for cultured nacre growth.
Emerging Designer Wins Grant to Create Ethical Brand
Designer’s frequent world travels laid a foundation of creative experimentation, design inspiration and social responsibility.
Trapiche-Type Sapphire from Tasmania
A rare Tasmanian trapiche-type sapphire, found during a field expedition, is examined.
Synthetic Emeralds Grown by Richard Nacken in the Mid-1920s
Describes the chemical, morphological, and microscopic properties of the first gem-quality synthetic emeralds ever produced, offering a historical perspective on their development.
