Consumer & Trade Guide to Emerald Enhancements
By: Jeffery Bergman, SSEF SGC Aquamarine and emerald are both members of the beryl family, and while exceptionally large and clean aquamarine crystals are relatively common, emeralds grow in geological conditions which only very rarely produce clean crystals. Natural inclusions common to emeralds from any location are affectionately referred to as jardin, which is French […]
BEAD-CULTURED AND NON-BEAD-CULTURED PEARLS FROM LOMBOK, INDONESIA
Cultured pearls are harvested from wild and hatchery-reared mollusks of various Pinctada species in many parts of the world. Today, most of the oysters that form these cultured pearls are raised in hatcheries, and only a few pearl farms still operate using wild oysters. On the Indonesian island DOWNLOAD PDF HERE
ORIGIN OPINIONS
By: Jeffery Bergman, SSEF SGC Homo Sapiens are obsessed with origins. When we meet people for the first time, we want to know where they come from. We want to know where the universe came from, we want to know where life came from, and we want to know where our cars come from as […]
Ethiopian Opals: Facts, Fears and Fairytales
By: Jeffery Bergman, SSEF SGC Legend has it that Ethiopia’s Queen Sheba adorned herself with precious opal when she visited King Solomon in Jerusalem. The first known evidence of human use of opal dates back approximately 6,000 years (Gebremedhin, K 2014). In 1939, archaeologist Dr. Louis Leakey uncovered opal artifacts in a cave in Nakuru, […]
SSEF vindicates gemmologist Jeffery Bergman, SGC
SSEF vindicates gemmologist Jeffery Bergman, SGC Bangkok, Thailand – September 17, 2023 – In a stunning 180-degree turnaround, SSEF, the Swiss Gemmological Institute, has acknowledged that participants have the right to use SSEF course acronyms BGC, BDC, ATC, and SGC as valid gemmological credentials after their names. This long overdue decision came after a Swiss court […]
Pakistan’s Gems, Mines and Markets
Pakistan’s Gems, Mines and Markets An Overview by Jeffery Bergman, SGC SSEF The magnificent ‘King of Kashmir’ aquamarine cluster in situ on meta-granite with quartz and feldspar, in the Shigar Valley, widely considered to be one of the finest mineral specimens ever discovered. (Photo: Fine Minerals International) Download Pdf Considered to be among the finest […]
Chromium Surface Diffusion Treated “Ruby”
Chromium Surface Diffusion Treated “Ruby” By: Jeffery Bergman – ASG SGC of EighthDimensionGems Photos by Ayub Muhammad of Pretty Little Gem July 20, 2023 – Bangkok, Thailand. Fig. 01 & 02. Face-up and pavilion shots of a 7-carat chromium surface diffusion treated “ruby”. Photos by Ayub Muhammad. First documented by the GIA in the early […]
Gemstone appraisal scam whistleblower facing
Gemstone appraisal scam whistleblower facing criminal defamation charges in Thailand Bangkok, Thailand – May 28, 2023: Jeffery Bergman, an American gemstone dealer and gemologist based in Bangkok, Thailand, is facing criminal defamation charges – filed by Miguel Zenetos, a Brazilian gemologist – in Thailand for publicly disclosing low-grade rough gemstone appraisal scams. Bergman has a […]
Brazilian gemstone appraisal scammer fails to show up
Brazilian gemstone appraisal scammer fails to show up and testify in defamation trial in Thailand Bangkok, Thailand – August 23, 2023: A notorious appraisal scammer, Miguel Zenetos of Brazil, failed to appear earlier this month for the pre-trial hearing of a lawsuit he filed in Thonburi Criminal Court, of Bangkok, Thailand, against Jeffery Bergman, a […]
Gemstone appraisal scam whistleblower hearing rescheduled to August 10
Gemstone appraisal scam whistleblower facing criminal defamation charges in Thailand In the next two months, Jeffery Bergman and his legal team will expand and refine their considerably in-depth cross-examination, during which they intend to expose Miguel Zenetos’ many false and unsupportable statements printed in the 200+ pages he submitted to the court. Bangkok, Thailand, June […]
