Dye Testing
Gems are frequently dyed to enhance their color. Distinguishing natural from enhanced stones is an essential skill for gemologists. The materials…
Hot Point Testing
Hot point testing can determine if some gem materials are plastic imitations. It can also reveal if a stone is treated with wax or plastic. By Donald…
24 Gray Gemstones: Stunning Options for Timeless Elegance
Discover 24 stunning gray gemstones that embody quiet luxury and sophistication. From diamonds to serpentine, explore these versatile gems…
16 Stunning Black Gemstones: A Guide to Rare Black Gems
Discover 16 stunning black gemstones from black diamonds to obsidian. Learn about their properties, rarity, and value in this comprehensive…
37 Blue Gemstones
Blue gemstones captivate us with their connection to sea and sky, representing one of nature’s rarest colors. Today’s gem market…
What’s the Difference Between Synthetic, Simulated, and Created Gemstones?
Some people make distinctions between different kinds of synthetic or lab-grown gems. In fact, you may even find different definitions of synthetic…
Spinel Engagement Rings
Most couples exploring gemstone options for their engagement ring start with some ideas about the color and size they want. However, they also…
IGS Become Member