Shop by material

Customer Testimonials

After having a problem with inaccurate sizing of my husband's wedding band at another store on jewelers row in chicago, I turned to Gregg Helfer Ltd. desperately for help. They offered great customer service… hard to come by these days. They created the perfect ring for me within one week and plenty of time to spare before the wedding.

– J. Kies… Chicago

Diamonds 101

Search by subject below, and learn what you need to know to become an expert on your purchase. You may also click our Diamonds 101 course for an overview:

Jewelry Guides

Extensive guidance in selecting earrings, necklaces and bracelets for her:

Engagement Ring Guidance

Guidance and insight on finding the perfect engagement ring.

Get expert guidance on finding the perfect engagement ring or wedding ring.

Metals and Gemstones

Education for for gemstones and metals:

Jewelry Glossary

To consult the glossary, type a word in the search box or click on one of the alphabetical tabs to go to a section of the keyword index. Each search should produce a list of terms which will lead you on to further information. Most explanations also have additional links to information held on our site or on related sites.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Feedback about the glossary

If you have any suggestions for terms which you would like to see included in the Glossary, please contact info@gregghelfer.com.

Win an all inclusive gateway vacation in Mexico I offer online scheduling using BookFresh

Expert Guidance

Need guidance before you start diamond shopping? This simple diamond guide explains the four Cs of diamonds: cut, color, clarity, and carat weight. Select your diamond based on the same criteria jewelers use to grade them. After reading through this guide, you'll be ready to choose the diamond that's right for your taste and budget.

Newsletter Signup

Sign up now to hear from Gregg Helfer Ltd!


Follow Us