These paraíba tourmalines come from the original vein in the Batalha mine. These gems routinely undergo heat treatment to improve color, and some even have clarity enhancement similar to emeralds. Paraíba tourmalines have bright, neon-like blue-green colors that wowed the gem industry when they hit the market.

However, miners have since discovered copper-bearing tourmalines in other parts of the world. These stones, first found in Brazil in the 1980s, were named 'paraíba tourmaline' after the original source area.

Some Brazilian indicolites exhibit an intense color known as 'Mutaca blue.' Find this Ring at CustomMade These have the same durability and beauty as natural stones, but at a fraction of the price. If a natural sapphire is out of your price range, consider a lab-created stone. Sapphires often undergo a heat treatment, which improves their clarity and color. These hues arise from trace amounts of titanium and iron in the gem's crystal structure. Sapphireīy far the most popular blue gem for faceting, a blue sapphire can have very high saturation. Royal engagements have also made it one of the most popular choices for engagement rings! This September birthstone can occur in any color except red (which is ruby), but its classic and most well-known hues are blue to violet. With regular cleaning, they'll also keep looking as good as the day you bought them. These tough blue gemstones will hold up to everyday wear, making them ideal for engagement rings. Better yet, they're less likely to break when accidentally dropped or knocked against a table. Each of these stones rates at least a 6.5 on the Mohs hardness scale, making them resistant to scratches. If you're looking for a blue gem for a ring, the following types are your best bets. Their experts can help you find a top-quality stone, and you'll avoid the poor quality that most major retailers offer (like this overly dark sapphire from James Allen). If you're considering a blue gemstone for an engagement ring or fine jewelry, consider designing a unique piece with CustomMade. A dark inclusion in a gem like this would detract from its beauty. Aquamarines are often very light blue gemstones.

Colors of blue sapphires