Find out all about precious and semi-precious gemstones, including sapphires, emeralds, rubies and semi-precious gemstones. Learn about gemstone cuts, clarity, color, origins and care.
Gemstone Learning Center
Sapphire Facts
Where do sapphires come from? How did they get their name? What colors are available?
Emerald Facts
How hard are emeralds? Which month is emerald birthstone month? What shades do they come in?
Ruby Facts
Where are rubies found? What celebrations are traditionally celebrated with rubies?
Gemstone Size
Understand the connection between carat weight and the dimension of your gemstones.
Gemstone Color
Learn about the range of gemstone colors. Find out the difference between hue, tone and saturation.
Gemstone Clarity
Everything will become clear when you read all about gemstone clarity.
Gemstone Cut
A very important characteristic when choosing a gemstone.
Burmese Ruby
Learn about rubies from Burma and what makes them so popular.
Ceylon Sapphires
Discover the beauty, vividness and value of Ceylon sapphires.
Zambian Emeralds
Discover these beautiful and timeless precious gemstones from Zambia.
Colombian Emeralds
Read about emeralds from Colombia and what makes them so popular.
Emerald Care
Proper care and cleaning of emerald gemstones.
Birthstones Guide
A brief guide that covers each month and the stone traditionally associated with it.
Gemstone Enhancements
Find out about the enhancements and treatments accepted as standard practice by the jewelry industry.
Cornflower Blue Sapphire
The spectacular beauty of Nature's purest blue gemstone.
Pigeon Blood Ruby
Discover the beauty and power of vivid rubies.
Ruby vs Pink Sapphire
Compare ruby and pink sapphire on color, rarity, price, and which suits an engagement ring.
High-Quality Emeralds
Master the five factors that define an exceptional emerald: color, clarity, treatment, origin, and price.
Sapphire Colors
Learn the differences between blue, pink, yellow, and padparadscha sapphires by rarity, origin, and price.
Diamond vs Gemstone Rings
Compare diamonds, sapphires, rubies, and emeralds on durability, symbolism, pricing, and long-term value.