Gemology
Why Are Crystals Different Colors? The Real Causes
Why Are Crystals Different Colors? Pure quartz is water-clear. Add a trace of iron and some natural radiation, and you get amethyst. Swap the iron for aluminum and you get...
Why Are Crystals Different Colors? The Real Causes
Why Are Crystals Different Colors? Pure quartz is water-clear. Add a trace of iron and some natural radiation, and you get amethyst. Swap the iron for aluminum and you get...
Mohs Hardness Scale Explained for Gemstones and...
Topaz is an 8 on the Mohs scale. That's harder than quartz and harder than nearly everything else in a normal jewelry box. And yet every so often someone drops...
Mohs Hardness Scale Explained for Gemstones and...
Topaz is an 8 on the Mohs scale. That's harder than quartz and harder than nearly everything else in a normal jewelry box. And yet every so often someone drops...
What Is Opal? The Science Behind Play of Color
Hold a precious opal up to the light and tilt it, and you'll see something no pigment or dye could ever produce: color that moves. Red slides into green, green...
What Is Opal? The Science Behind Play of Color
Hold a precious opal up to the light and tilt it, and you'll see something no pigment or dye could ever produce: color that moves. Red slides into green, green...
What Is Hackmanite? The Crystal That Changes Co...
Leave most crystals in the sun and nothing happens beyond a slow, imperceptible fade over years. Leave hackmanite in the sun and you can watch it change color in real...
What Is Hackmanite? The Crystal That Changes Co...
Leave most crystals in the sun and nothing happens beyond a slow, imperceptible fade over years. Leave hackmanite in the sun and you can watch it change color in real...
What Is Zircon? Why It's Not the Same as Cubic ...
Somewhere between a jewelry counter and a search engine, zircon picked up a reputation it doesn't deserve. Say the word out loud and most people hear "cubic zirconia," the lab-grown...
What Is Zircon? Why It's Not the Same as Cubic ...
Somewhere between a jewelry counter and a search engine, zircon picked up a reputation it doesn't deserve. Say the word out loud and most people hear "cubic zirconia," the lab-grown...
What Is Sapphire? Every Color Beyond Blue Expla...
Blue is what comes to mind first, but it's not what defines sapphire. Sapphire is corundum in any color except one: red. The moment corundum turns red, gemologists give it...
What Is Sapphire? Every Color Beyond Blue Expla...
Blue is what comes to mind first, but it's not what defines sapphire. Sapphire is corundum in any color except one: red. The moment corundum turns red, gemologists give it...