This collection of resources was contributed by Paul Gian. Free Gemology Resources

Jan. 15, 1994, by Fred Van SantRevised Sept. 15, 1999 (Note: For terms dealing with crystal structure, geology, and other such technical subjects, see a textbook.) Adjacent Facets:Two facets on a stone which form a line between them. If facet A shares …

Here is a list, in no particular order, of all faceting machine manufacturers that USFG members have found and submitted. The list includes contact information and a link to their website (if they have one). Inclusion on this list is not an endorsement …

Addexton Jamb Peg Faceting Machines – Addexton Company Alpha Taurus Faceting Machines – Imperial Gem Instruments, 2455 23rd Street, Santa Monica, CA 90405 – Phone: 310.450.8725 Anand Faceting Machines – Anand Engineering Works Covington Faceting Machin …

Big Sky Faceters Guild, Inc. Affiliation: Newsletter: Mailing Address: PO Box 564, Great Falls, MT 59403-0564 Meetings: 4th Tues. 7:00pm, Montana School for Deaf & Blind E-mail: Phone: (406) 727-2315 Columbia-Willamette Faceter’s Guild Faceters Gui …

Material Refractive Index Critical Angle Birefringenge Dispersion Hardness Specific Gravity Crystal System Class Formula Cleavage Apatite series 1.64 37.57° .004 .013 5.0 3.05-3.20 hexagonal 6/m Ca5(PO4,CO3)3(F,Cl,OH) 2; {0001}indistinct; {10-10} trace …

Cutting Gemstones: A beginners guide to faceting by John Broadfoot & Peter Collins, 2003 ISBN:0-646-41461-5 A book designed to teach you about faceting and is suitable for the complete beginner. The book is designed so that you can teach yourself t …