Top 11 Best Blue Gemstones (2019 Review)

​If something shiny and blue is your thing, then you've come to the right place. 

​This latest review article is your ultimate guide in finding what's hot and what's not in the world of precious blue gemstones.

Let's make it easy with my product review guide, where you’ll learn:

  • ​What blue gemstones are
  • ​Where you can buy them
  • And the most popular types of blue gemstones
best blue gemstones
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What Are Blue Gemstones?

The color blue is quite beautiful and gemstones within this color range are becoming more and more popular. Blue gemstones have their origins in making jewelry during ancient times, particularly for crown jewels and earrings.

Arguably, the most sought after blue gem is sapphire. Its deep blue hue is simply beautiful even though gemstones like Lapis lazuli, Zircon, and Kyanite also have this shade.

Blue resembles the color of the sky and waters, which are associated with stability, intelligence, inspiration, freedom, and imagination. Blue gemstones will fit into any kind of jewelry and can be worn in both formal and casual outfits.

Here's a short Youtube video that will tell you more you need to know about blue gemstones:

Where To Buy Blue Gemstones?

​Blue gemstones are available all over and you can buy from personal owners, local stores, or even online retailers. You may choose where to buy blue gems depending on your budget, location, among other personal preferences.

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What Are The Types Of Blue Gemstones?

​The number of blue gemstones available in the world today exceeds a hundred. However, several types are common and widely used in making jewelry.

  1. Aquamarine
  2. Azurite
  3. Bentonite
  4. Lapis Lazuli
  5. Sapphire
  6. Tanzanite
  7. Agate
  8. Tourmaline
  9. Blue Topaz
  10. Turquoise
  11. Blue Diamond

​List and Review on the Best Blue Gemstones

Aquamarine

  • Highly transparent
  • Occurs as big crystals
  • Vitreous to resinous luster
  • $10-$500

Aquamarine is a well-known gemstone and even though they are majorly used in engagement rings, they’ll work well with just about any type of jewelry.

aquamarine

Aquamarine occurs in very large crystals and has a bright sparkle when exposed to light.

​With a hardness of 7.5 to 8 Mohs, Aquamarine is a tough gem and does not break easily. Most aquamarines available on the market are heat treated to bring out the color of the stone.

In essence, vivid deep blue hues fetch high prices and are considered the most valuable. This blue gem is quite durable and would be a perfect choice for everyday wear.

Pros

  • ​Abundant gemstone
  • ​Affordable

Cons

  • ​Not compatible with most jewelry types
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Azurite

  • Deep color
  • Dull luster
  • $10-$100

​Azurite is a popular choice for jewelers due to its deep blue, azurite color and has been used as a pigment for years.

​Its deep blue color also makes it perfect for making jewelry without the need of passing through heat-treating.

​Azurite has a pretty low hardness (3.5 to 4 Mohs), hence making it harder to cut the stone into facets. It is usually cut into softer edges as cabochons. The gemstone also needs to have protective settings to ensure it lasts longer (e.g, bezel).

With time, azurite can fade its color from blue to green. It’s therefore important to avoid placing the gemstone exposed to light for long hours.

Pros

  • ​Attractive blue color

Cons

  • ​Very soft
  • Prone to fading

Benitoite

  • Excellent “fire”
  • Extremely rare
  • Highest dispersion ratings
  • $250-$5000

​Probably one of the world’s rarest gemstones is benitoite.

For one, it’s only found in one place in the world. It also exhibits the highest dispersion ratings of all gems, including diamond. The stone has excellent brilliance and fire properties.

​Benitoite is used in jewelry rings but in small portions due to its rarity and value.

Pros

  • ​Excellent brilliance

Cons

  • ​Quite costly
  • Hard to find big pieces (>1carat)

Lapis Lazuli

  • ​Golden inclusions
  • Translucent to opaque
  • Dull luster
  • $1-$50

​Lapis Lazuli is quite different from other gemstones. It is not really a mineral.

Instead, Lapis Lazuli is a rock containing several minerals including calcite, lazurite, and sparkling pyrite flakes.

lapis lazuli jewelry

​Lazurite is the mineral that brings out its deep blue color. In ancient times, lapis lazuli was used as a major source of dye.

​Lapis lazuli mainly occurs in shades of blue but, in certain cases, white/gold inclusions of marble intrude the stone.

It is not a very hard stone (5 to 6 Mohs) so some extra care is needed when handling the jewelry. Lapis lazuli gemstones are always cut into cabochons mainly used in making pendants, necklaces, and bracelets.

Pros

  • ​Relatively cheap
  • ​Widely available gemstone

Cons

  • ​Low durability
  • Cannot be faceted
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Blue Sapphire

  • ​High brilliance
  • ​Very tough
  • ​A popular selection
  • ​$500-$5000

This precious stone is the most popular in the realm of blue gemstones.

Being a very tough gemstone (9 Mohs), it’s even become an alternate option for diamonds, especially in engagement rings.

Blue sapphire may be the popular version of this stone, but sapphire also exists in a wide range of colors.

​The blue hue is due to the presence of titanium and iron during the processes that led to its formation. Sapphire is highly resistant to scratches and breaking-probably tougher than diamond!

That being said, blue sapphire is highly priced with those having purplish tints being the most valuable.

Pros

  • ​Highly attractive
  • ​No treatment needed

Cons

  • ​Very expensive

Tanzanite

  • ​Vitreous luster
  • ​Significantly rare
  • $75-$1500

Tanzanite is a newly discovered gemstone as the earliest deposits were found in 1967. However, the stone is still a popular favorite because of its deep blue to violet color.

tanzanite jewelry

The stone’s color may range from deep blue to other pale shades which are not as popular. More often, the paler shades go through heat-treatment to enhance their colors.

​Tanzanite, most of the time, is used as an alternative to other blue gemstones that are highly priced. However, tanzanite’s reasonably low hardness (6.5 Mohs) makes the stone delicate and mostly used in earrings and pendants.

Although discovered recently, Tanzanite may not be in huge deposits in the near future. So, prices may rise in the next decades.

Pros

  • ​Reasonably priced

Cons

  • ​Heat-treatment is common

Agate

  • ​Colorful banding
  • ​Waxy luster
  • Translucent stone
  • ​$0.5-$25

Agate is a form of chalcedony and portrays in a wide variety of deep colors, including blue.

Agate is distinct in its banding form, leading to a wider spectrum of blue color from one stone to another. It is an abundant stone and easily found all over the world.

Agate is also one of the most pocket-friendly pieces. It is used in jewelry making, largely as pendants for necklaces.

It is best used in pendants to portray the banding qualities of this blue gemstone. These bands are often comprised of different colors.​

Pros

  • ​Very cheap
  • Widely available

Cons

  • ​Low durability
  • Can't be faceted
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Tourmaline

  • ​Wide range of color within the blue spectrum
  • ​Vitreous luster
  • ​$10-$16,000

Most varieties of blue tourmaline cost lower than $500. However, Paraiba tourmaline, which is rare, has a higher price creating such a wide price margin.

Blue Tourmaline (also known as indicolite) is one of the rarest kinds of tourmaline. It comes in light to dark shades of blue.

There are other luminescent blue variations, Paraiba tourmaline, but they’ll barely weigh up to one carat. Blue tourmaline may have greenish tints although the most valuable are purely blue.​

The stone is generally hard (7 to 7.5 Mohs) and has above average durability. If well taken care of, blue tourmaline can last decades without wear.

On rare occasions, blue tourmaline can have a cat’s eye, where the light mirrored off from the stone resembles the still eye of a cat. Tourmaline is a common gemstone in jewelry making and the blue variety is often used with other color-gemstones for variety and complement.

Pros

  • ​Unique varieties available (cat’s eye)
  • ​Generally abundant
  • Great color variations

Cons

  • ​Can be very expensive

Blue Topaz

  • ​Very hard
  • ​Vitreous to transparent luster
  • Occurs as large crystals
  • High polish characteristics
  • ​$5-$25

Another piece of rare gemstone is blue topaz. Since most topaz is colorless, it is hard to find the blue variety.

blue topaz jewelry

​It is therefore not surprising that heat-treating is a common process in blue topaz gemstones. Additionally, the stone is pleochroic and the stone can have different colors depending on the angle you view it from.

Topaz has some of the biggest crystals of any gemstone. Brazilian deposits can weigh as much as 500 pounds.

Even though it is a rare gemstone, topaz is one of the least expensive in the variety of blue gemstones. Topaz is often inclusion-free and highly durable.​

Pros

  • ​Easier to find
  • ​Less expensive

Cons

  • ​May not make for a statement jewelry

Turquoise

  • ​Blue-green color
  • ​Attractive web-like inclusions
  • ​Significantly soft
  • ​Opaque
  • $5-$500

Turquoise is a semi-precious gemstone often with black inclusions occurring as veins. Turquoise is an ancient gem and popular for its vivid sky blue and green shades.

turquoise jewelry

Turquoise may not have the brilliance of many blue gemstones, but the stone’s rich color makes it a popular gem for centuries.

It is often cut in cabochons and beads when used for jewelry making. Because turquoise is a soft stone (5 to 6 Mohs), it is preferred in pendants and other less delicate jewelry pieces. It’s also not very durable and extra care is needed when handling this gem.

Pros

  • ​Attractive look
  • ​Relatively abundant

Cons

  • ​Can’t be faceted
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Blue Diamond

  • ​High hardness
  • ​​High refractive index
  • ​Excellent brilliance
  • ​Adamantine luster
  • ​$1,500-$150,000+

Diamond has a wide variety of colors, and the blue variety is one of the rarest. The blue diamond is also one of the most beloved gemstones as it comes with a perfect hardness score of 10 Mohs.

blue diamond jewelry

It is one of the gemstones with the highest refractive indexes in the world and is, therefore, a great choice in almost any type of jewelry.​

Diamonds are well-known for high prices, but a blue diamond is even pricier because of the rarity and treatment which is used to enhance the stone. Naturally blue diamonds are the most expensive and a single carat could cost more than $200,000.

Pros

  • ​Highly durable
  • ​Synthetic forms available

Cons

  • ​Very expensive
  • Natural blue diamonds are very rare

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