Jewelry Shopping for the Fall Wedding Season
︎︎The leaves will soon turn vibrant shades of red and gold; love is in the air during the enchanting fall wedding season. Whether you’re the bride, bridesmaid, or guest, the…
Executive Director, AGS Laboratories and Gemological Sciences
Last 5 articles of this author
The Effects of Indexed Upper Half Facets
by Peter Yantzer, CG
American Gem Society Laboratories
Gemstone cutters can tilt or 'index' the upper half ( or upper girdle ) facets. This indexing produces different amounts of weight retention from a given piece of rough and produces different optical performance effects. Indexing can also affec...
The Effects of Indexed Upper Half Facets
by Peter Yantzer, CG American Gem Society Laboratories Gemstone cutters can tilt or 'index' the upper half ( or upper girdle ) facets. This indexing produces different amounts of weight retention from a given piece of rough and produces different optical performance effects. Indexing can also affec...
