GemDialogue

 

GemDialogue Color Grading System
Price: $450, shipping & insurance extra

Gemologists, gem dealers, appraisers, and retail jewelers all need a method of accurately describing, recording, and communicating gemstone colors.

GemDialogue answers that need. The system consists of a set of 21 transparent color charts showing 10 different saturation levels of the basic colors. It also has three masks, which are used to show how much color is hidden by black or brown. By mixing the charts, you can accurately describe over 60,000 colors! GemDialogue is the perfect tool for matching gemstones, communicating stone colors between buyers and suppliers. With it you can keep detailed records of a customer's purchases and provide precise color descriptions in appraisals.

In addition to the color charts, the system includes a CD explanation of GemDialogue and a detailed instruction and grading manual.

USPS Priority in US  $25.00
USPS shipping International $75.00
 

 

 

 

 

 

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the-handbook-of-gemmology-3nd-edition-downlo-1427938952

 

The Handbook of Gemmology, Second Edition
Price: $49.95, shipping & insurance extra
by Geoffrey Dominy, FGA

Covering all aspects of the science of gemmology and gem identification this innovative and interactive e-book consists of 1056 digital pages and over 1000 color photographs, diagrams and illustrations featuring the photography of internationally renowned gemstone/mineral photographers Tino Hammid & Jeff Scovil.
 
Features include: State of the art ‘Flipping Book’ technology (Windows/Mac Versions), Powerful Search Engine, Post-its/Bookmarks, Highlighting, Hyperlinked Table of Contents, Index & Cross-References, Zoom in/Zoom out and Thumbnail Images.

USPS shipping $6.45
 

 

 

 

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OPL "Pocket" Diffraction Grating Spectroscope 

 

OPL "Pocket" Diffraction Grating Spectroscope 
Price: $95.00, shipping & insurance extra

With fixed slit & fixed focus. This spectroscope has been used throughout the world for more than 35 years & is recognized and respected by gemologists & gemological teaching centers worldwide. It is an ideal instrument for a small gemological mini-lab  kit, or is easily carried in a pocket or brief case .  
 
Perfect for field use or general study purposes. Constructed of stainless steel & black acetol, 55mm long, 12.5mm wide, packed in a distinctive blue lined transparent plastic case. As shown in A Students Guide to Spectroscopy by Colin Winter, FGA, DGA.

USPS Priority Insured  $13.45
 

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OPL "Teaching" Diffraction Grating Spectroscope

 

OPL "Teaching" Diffraction Grating Spectroscope
Price: $150.00, shipping & insurance extra

OPL "Teaching" Diffraction Grating Spectroscope, with fixed slit & fixed focus. Similar to but larger than the “Pocket”  model.

This spectroscope is ideal for laboratory or classroom use. Has been used worldwide for more than 20 years Reviewed favorably in several international gemological journals. Constructed of stainless steel & black acetol, 104mm long, 25mm wide, packed in a distinctive blue plastic tube. Best used with the OPL Stand, shown in A Students Guide to Spectroscopy by Colin Winter, FGA, DGA.

USPS Priority Insured  $13.45
 

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OPL Spectroscope Stand

 

OPL Spectroscope Stand
Price: $125.00, shipping & insurance extra

OPL Spectroscope Stand, with rotating table, for the OPL “Teaching” Spectroscope. As illustrated & discussed in A Students Guide to Spectroscopy by Colin Winter, FGA, DGA. Constructed of black coated mild steel & aluminum this sturdy stand with non-slip feet is an ideal accessory when demonstrating spectroscopy in a classroom situation, or for home study.

USPS Priority Insured  $13.45
 

 

 

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OPL Hylite Lamp

 

OPL Hylite Lamp 
Price: $350.00, shipping & insurance extra

OPL ‘Hylite’.  A quartz halogen lamp, for gemological use with a focused high intensity light beam, designed specifically for use with the OPL range of instruments. Extra bulb provided.  With a flexible swan-neck & rear aperture for transmitted light spectroscopy, allowing specimens to be placed directly on to the lamp head, as shown in A Students Guide to Spectroscopy by Colin Winter, FGA, DGA. Flexible in all directions this lamp is ideal for use with all OPL instruments & is also suitable as a microscope lamp.

USPS Priority Insured  $45.00

 

 

 

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OPLStudentGuide2nd

 

A Students' Guide to Spectroscopy, Second Edition
Price: $30.00, shipping & insurance extra

A Students’ Guide to Spectroscopy,2nd Edition  by & Colin H. Winter, FGA, DGA, Illustrations and Artwork by Hilary Winter, BA, FGA, DGA

A student friendly approach to spectroscopy, with detailed descriptions, photos, diagrams, practical examples, advice and just a touch of theory. As reviewed by Michael O’Donoghue in the October 2003 issue of The Journal of Gemmology. This little book has taken the gemological world by storm and is now regarded as an essential part of a gemology students library. 88 full color pages. Signed by the author & illustrator. 

USPS Priority Insured  $6.45
 

 

 

StudentGuideSpectroscopy

 

 

 

 

Pearls by Elisabeth Strack, FGA, GG

 

Pearls
Price: $145.00, shipping & insurance extra 
Pearls
by Elisabeth Strack, FGA, GG 

Currently, the most comprehensive of all publications on the jewels of the ocean around the world.  This book offers a fantastic insight into five millennia of the history of pearls.  The 696 page work is currently the most exhaustive publication on the varied and breathtaking world of the ocean jewels.  More than 650 graphics, tables, exquisite photographs and detailed maps document the history of pearls from their former standing as jewels for kings to their role as modern jewelry.  Each important detail concerning the world of pearls is presented here in word and picture –  ranging from the development and characteristics of natural and cultured pearls to the analysis and treatment methods.  Bookplate signed by the author.

USPS Priority Insured  $13.45
 

 

 

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"A Gem and Ornamental Materials of Organic Origin" by Maggie Campbell Pedersen, FGA, ABIPP

 

Gem and Ornamental Materials of Organic Origin
Price: $65.95, shipping & insurance extra

"A Gem and Ornamental Materials of Organic Origin" by Maggie Campbell Pedersen, FGA, ABIPP
 
The only book devoted to organic material is an easily accessible and interesting reference book.  It contains chapters on amber and copal, jet, ivories, bone, antler, horn, rhino horn, tortoiseshell, pearl, shell, coral and many unusual organics and plastics.  A further chapter provides quick reference charts.  Information is given on identification tests, uses, history and conservation status.  Over 200 color photographs aid identification of the materials.  Bookplate signed by the author.

USPS Priority Insured  $13.45
 

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Please note:  NAJA members should consult their current booklist for discount prices.

For international shipping, please contact office@najaappraisers.com for quotes.

Copyright  © 2012  National Association of Jewelry Appraisers

 

 

Please note:  NAJA members should consult their current booklist for discount prices.

For international shipping, please contact office@najaappraisers.com for quotes.

 
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