Description
Branko Deljanin (Gemmological Research Industries, Canada)
11pmPT (Vancouver) on November 25 (Tuesday), 2025
8am Paris, 11am Dubai, 6pm Sydney on November 26 (Wednesday)
During October 2024 visit to Surat (India), Branko Deljanin visited several CVD factories, observed large crystal clusters, and collected samples of as-grown, HPHT-treated, and LPHT (Low Pressure High Temperature)–treated CVD diamonds for research and education. Irradiated HPHT-grown melee diamonds (no phosphorescence under SW) were sold as CVD-grown! The cost of growing, cutting, and processing CVD diamonds has reached record lows – USD $90 /ct.
In October 2025, Branko examined a dozen new-generation CVD-grown diamonds from Dubai, produced using a one-step “Plasmability” CVD process developed in the USA. New CVD cannot be separated form natural using portable instruments — a microscope (showing VS–VVS clarity with some SI1 inclusions), a portable polariscope (revealing strain and multicolored patterns similar to natural Type I diamonds), and LW/SW UV lamps (no reaction).
Come to 1h webinar by international expert Branko Deljanin to learn what combination of instruments to use to detect new Laboratory-Grown Diamonds from India and Dubai.
