Square Barb: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Square Bob".
HomeLearning CenterJewelry and LapidaryGemstone Faceting Diagrams and Technical Cutting InformationSquare Barb: Faceting Design Diagram
Related Articles
Garnet Value, Price, and Jewelry Information
Although commonly associated with the color red, garnets can be found in almost any color and are popular choices for...
Read More
Top Spots for Gem Hunting in the US
Visit one of the top gem hunting spots in the US. Go alone or with the family. A gemology-themed vacation...
Read More
Faceted Gemstones And Light Return Measurements
What factors determine the light return of faceted gemstones? Facet quality, polish, color, and cut style all play roles. Learn...
Read More
Identifying Garnets Simplified
Identifying garnets by species is complicated. Learn how to use refractive index, hue, and absorption spectrum readings to simply the...
Read More
Latest Articles
Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
Read More
Red Gemstones: Ruby, Spinel, Garnet, and Other Great Picks for Jewelry
Red gemstones are popular choices for engagement rings and fine jewelry. The three most popular stones are ruby, garnet, and...
Read More
Jadeite Value, Price, and Jewelry Information
Explore jadeite gemstone value, learn the facts about jadeite vs jade, and discover how to identify quality jadeite jewelry.
Read More
Tips for Cutting and Polishing Halite
Halite is a very difficult material to facet, even for experts. Jeff Graham offers his advice on how to cut...
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!