sapphire

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…

This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted by their crystal…

Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem…

Vintage engagement rings come in many different styles, but designs from four eras are very popular today. Learn more and find that perfect vintage…

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…

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.…

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…

Usually orange to reddish brown, gem-quality spessartite or spessartine garnets are somewhat rare. However, as blends with other garnet species,…

How do you make money investing in gems? What should you buy, for how much, and how can you add value to your investments? Learn these top 5 rules.