During the early 1980s, publications like Oriental Jewels served as vital links between Eastern exporters and Western retailers. You can expect this issue to contain:
They maintain a comprehensive archive of gemological periodicals. You can search their library catalog for specific issue availability. Oriental Jewels Vol 2 n 3 (1982) PDF
Early gemological insights into inclusions or heat treatments that were becoming standard in the 80s. During the early 1980s, publications like Oriental Jewels
Vintage ads from major exporters that provide a "time capsule" of pricing and styles from 1982. Where to Find the PDF During the early 1980s
Analysis of the "Chanthaburi-Trat" gem fields in Thailand or the ruby trade in Burma.
They often index historical trade journals and may have digitizations for members ( Society of Jewellery Historians ).