There are many gemstones in existence, but which ones are the most famous, and why? Today we’re putting diamonds to the side to discuss three iconic pops of color: ruby, sapphire, and emerald.
Let’s get into the details:
Why Only Three?
All gemstones are uniquely beautiful, yes—but only the Big Three are referred to as “precious gemstones”. The title was awarded due to a shared beauty, durability, and rarity, which collectively elevated their status. It’s also backed by centuries of collecting and use in the fine jewelry industry. Other gemstones are referred to as “semi-precious”.
Ruby, sapphire, and emeralds are also known for their distinct colors: Ruby–vivid red, sapphire—ethereal blue, and emerald—rich green. Each stone has unique qualities that make them special and sought-after. And in some cases, these stones can be priced higher per-carat than a diamond.
Ready to meet the stones?
June Azure Ruby ring
Ruby
Color: Red
Durability Ranking: 9
Engagement Ring: Azure Ruby
Ruby is defined by its vibrant red color. These stones can range from pure red to purple, pink, and less saturated variations. However, pure red—”pigeon blood”—is by far the most valuable.
Ruby is one of the hardest gemstones with a solid 9 ranking on the Mohs scale. It is also the official birthstone for the month of July, said to protect those against misfortune.
Shop our Vintage Cabachon Ruby Bombé Ring, Vitrine Signet, and Vintage Scattered Gemstone Band
June Dusk ring
Sapphire
Color: Blue (+ others)
Durability Ranking: 9
Engagement Ring: Dusk
Sapphires exist in many colors (violet, green, yellow, orange, pink), but blue is considered the benchmark—and the most famous. The most valuable shade is royal blue or cornflower blue, which capture a balance of brightness and transparency.
Fun fact: sapphire and ruby are chemically the same stone—corrundum. But because of each color identity, they are individually recognized. After a certain color threshold, pink sapphires are classified as ruby instead of sapphire (dark pink).
Sapphire is also one of the hardest gemstones with a solid 9 ranking on the Mohs scale. It is also the official birthstone of the month of September, representing wisdom, loyalty, and peace.
Shop Azure, Dusk, and Marlow for a sapphire engagement setting
June Magnolia Band
Emerald
Color: Green
Durability Ranking: 7.5 - 8
Engagement Ring: Magnolia Band
Emerald is famous for its rich green color. Unlike ruby and sapphire, these stones are often formed with visible inclusions—but that is part of their appeal. Pure green is the most valuable color, with a medium-darkness where the saturation is still visible.
Emerald has a 7.5-8 durability ranking on the Mohs scale. Gemstones with a 7 score or above are considered suitable for everyday wear. It is also the official birthstone for the month of May, symbolizing abundance, joy, and rebirth.
Shop Arden, Estelle, and Lark for an emerald engagement setting
Can’t get enough of gemstones? Find your birthstone or shop June Colored Diamond & Gemstone Settings
With a dedication to fine jewelry crafted from quality materials, June creates modern heirlooms made to last. Shop our collection or create a custom ring with our design team.
