The Best Oval Diamond Engagement Rings for Every Budget
Oval diamonds are consistently one of the most popular diamond cuts on the market. Oval diamond engagement rings are popular for a good reason –…
What are Allochromatic and Idiochromatic Gems?
Learn the difference between allochromatic and idiochromatic gems and why some gem species can occur in many color varieties and others occur…
Opal Stones and Gems: Value, Price, and Jewelry Information
Opals are in a class by themselves. As a species, opal is so unique it has its own descriptive vocabulary. More than any other gem, each opal is distinctly…
Amethyst Gem, Price, and Jewelry Information
Discover everything about amethyst gemstones — from their meaning and properties to color variations. Learn about this purple February birthstone’s…
Parti Sapphires: the Colored Gemstones for 2021
Parti sapphires can show two or three colors at the same time. Learn why recent trends will soon make these beautiful gems very popular.
Red and More: Choosing Garnet Engagement Ring Stones
Garnets come in a wide range of colors, not just classic red, and many are relatively affordable. Learn how to choose a garnet engagement ring stone.…
Aquamarine Durability
Question: Emeralds and aquamarines are both beryls. Emeralds are green beryls; aquamarines are blue to blueish green beryls. Since emeralds…
Aquamarine Enhancements
Question: What gemstone treatments or enhancements do aquamarines typically receive? By International Gem Society 2 minute read Fragments…
Aquamarine Synthetics
Since natural, mined aquamarines are moderately priced gems, lab-made or synthetic aquamarines have a small profit margin. As a result, this…
IGS Become Member