Opal Types
From pearly white to distinctive boulder and colorful fire, the opal variety you choose will greatly affect the aesthetics and price of a finished…
Step Hexagon Cut Ruby, Tanzania, .59 cts
This stone has a bit of a color shift toward purplish or Magenta in some light (as shown in the photo), but is usually red, so seems like more of a ruby…
Table of Gems Ordered by Crystal System
This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted by their crystal…
Specific Gravity Values of Selected Gems
Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem…
Vintage Engagement Rings: Guide to Four Eras
Vintage engagement rings come in many different styles, but designs from four eras are very popular today. Learn more and find that perfect vintage…
Creating an Ethical Engagement Ring: the Complete Guide
If you’re trying to create an ethical engagement ring, you have some research ahead. Our guide can help you shop for ethically sourced gemstones…
Eight Opal Types Explained
Opal is a complicated gemstone, and many factors affect its price. Learn how to distinguish these eight opal types and how they differ in value.…
Radiant-Cut Diamonds Buying Guide: Modern & Durable
Exceptionally sparkly, radiant-cut diamonds are great for engagement rings. But how can you find a top-quality gem? Read our tips for buying radiants…
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