1. Carnelian
   Geode
2. Quartz
   Mica

Who doesn't love geodes? These marvelous specimens are grey and blah and the outside, but bursting with crystals on the inside. They are a rock and a crystal all wrapped into one!

1. Emerald
   Ruby
2. Sapphire
   Diamond

Sapphires are the ultimate beautiful blues. This precious gemstone is a favorite pick for necklaces, rings and bracelets. These stunners go with just about everything in your closet.

1. Opal
   Moonstone
2. Onyx
   Pearl

Crack open an oyster and you might find one of these gleaming beauties. Pearls have long been coveted for long strands of pearl necklaces, classy earrings and also statement rings.

1. Topaz
   Calcite
2. Amber
   Onyx

Naturally-occurring topaz is actually pale yellow, but different impurities can render it rainbow-colored. It's a spectacularly hard stone, making it both durable and so attractive!

1. Peridot
   Quartz
2. Moonstone
   Silver

Moonstones are so popular because they have an iridescent, otherworldly quality that sparkles in a burst of different colors and hues. They're strongly associated with chakras and intuition.

1. Calcite
   Graphite
2. Tiger’s eye
   Feldspar

Ancient Egyptians used calcite as a base for many of their carvings, including the goddess Bast, for which we get the modern word "alabaster." Calcite is also considered a healing crystal.

1. Peridot
   Topaz
2. Carnelian
   Quartz

Carnelian gets its brilliant hue from iron oxide, which also causes some of the more incredible designs that color these semi-precious stones. It makes an absolutely stunning statement ring.

1. Moonstone
   Amber
2. Graphite
   Tiger's eye

Amber is literally fossilized ancient tree resin, and each piece's unique impurities are what makes it so stunning. Sometimes you can even find insects preserved in pieces of amber.

1. Feldspar
   Beryl
2. Quartz
   Shell

Quartz is a ubiquitous mineral made out of silicon and oxygen. It's extremely hard, earning it a "7" on the Mohs hardness scale. It's tremendously useful and found in many different products.

1. Emerald
   Ruby
2. Sapphire
   Garnet

Popularized in Frank L. Baum's classic children's book as the Emerald City, this gem is notable for its lush green hue and brilliant shine. It's a very precious stone for a reason!

1. Ruby
   Aquamarine
2. Bloodstone
   Opal

Opals might look a little bit like moonstones, but the two are not the same. Opals are infused with brighter and more varied colors thanks to the fact that they're made of silica.

1. Carnelian
   Onyx
2. Peridot
   Tiger’s eye

Onyx is exceptionally hard and very stunning to look at. The most popular variety of onyx is black, although you can also find it in white as well. Both are exceptionally beautiful.

1. Jasper
   Beryl
2. Graphite
   Feldspar

Graphite is a naturally-occurring substance that magically transforms into a diamond if you apply enough pressure. If you've ever used a No. 2 pencil, you've worked with graphite.

1. Topaz
   Beryl
2. Fluorite
   Shell

This mineral is beautifully rainbow-colored but is mostly used for industrial work. Those that are strikingly beautiful are used for jewelry, but fluorite mostly does work behind the scenes.

1. Ruby
   Sapphire
2. Emerald
   Quartz

The original red gems, rubies are tremendously beautiful and used for a number of different types of jewelry. They make stunning statement rings, lovely necklaces and beautiful bracelets.

1. Pyrite
   Obsidian
2. Peridot
   Cinnabar

Peridots are deep lime-colored and the birthstone for babies born in August. Although they are not as popular as some of the other gemstones in this quiz, peridots still have a fan following.

1. Moonstone
   Tiger's eye
2. Calcite
   Coral

Tiger's eye looks a little like varnished wood, and no two pieces are alike. It varies in hue from golden brown to reddish and deep brown and usually has stripes or bands of color.

1. Mica
   Gold
2. Silver
   Graphite

Silver is one of the most popular metals in the world. Along with gold and platinum, silver makes up the base for many different pieces of jewelry. It is also gorgeous all on its own.

1. Silver
   Gold
2. Graphite
   Mica

Mica is a brittle, silicone-based mineral that can make your skin glow. That's right, mica is often used for makeup and is thought to even have calming effects for irritated skin.

1. Jasper
   Tiger's eye
2. Amber
   Topaz

Red jasper is the most common type of this mineral and is known for its brilliant red color that comes from iron oxide. It also has some impurities, which makes each piece of jasper unique.

1. Emerald
   Sapphire
2. Peridot
   Diamond

This wedding band favorite has long been used as a gem that you give your betrothed. Although diamonds are expensive, they are also very common and used in plenty of different industries.

1. Sapphire
   Moonstone
2. Beryl
   Topaz

Beryl is a base gemstone for some of our favorite stones, including brilliant pale blue aquamarine. It certainly polishes up nicely and looks very attractive in most types of jewelry.

1. Silver
   Pyrite
2. Mica
   Platinum

During the Gold Rush, many prospectors uncovered pyrite and thought that they had struck it rich. This mistake gives pyrite its common nickname, "fool's gold." It is used in industrial practices.

1. Diamond
   Amber
2. Cat's eye
   Moonstone

Cat's eye, also known as chrysoberyl cat's eye, gets its distinctive stripe from the chatoyancy effect. They are not as popular as the other feline stone, tiger's eye, but can still be found in jewelry stores.

1. Citrine
   Peridot
2. Ruby
   Topaz

Citrine sounds a bit like "citrus," which is fitting because the color of this gemstone is a deep, bright-colored orange hue. They are uniquely beautiful and a variation on quartz.

1. Mica
   Graphite
2. Feldspar
   Pyrite

Feldspar makes up 41% of the Earth's crust, making it one of the most common minerals on the planet. It is either very pale or colorless and extremely hard and durable.

1. Lapis lazuli
   Sapphire
2. Aquamarine
   Peridot

Lapis lazuli is a semi-precious stone that comes in one of the most beautiful naturally-occurring colors on the planet. Its stunning deep blue color made it valuable to ancient people.

1. Quartz
   Turquoise
2. Geode
   Beryl

These opaque stones come in various blue-green colors and pair stunningly with silver jewelry. They are generally shot-through with copper coloration, making each one totally unique.

1. Mica
   Shell
2. Pearl
   Quartz

Seashells are naturally occurring materials that you can collect for free on any beach in the world. They have been traditionally made into jewelry and used for ceremonial purposes.

1. Onyx
   Lapis lazuli
2. Obsidian
   Jasper

Obsidian is one of the most interesting elements on the planet because it is basically a mineral forged from a volcano. Shiny, jet-black and very hard, obsidian is absolutely incredible!

1. Feldspar
   Graphite
2. Calcite
   Sulfur

Sulfur is a pale yellow element that famously smells a lot like rotten eggs. It can be dangerous to humans, and you should avoid inhaling a large amount of it- for your health and because the smell is so bad!

1. Ruby
   Peridot
2. Amethyst
   Fluorite

Amethysts are actually a purple-colored variety of quartz and have been used for spiritual and ceremonial purposes for years. They are popular as stand-alone stones and in necklaces.

1. Malachite
   Obsidian
2. Turquoise
   Opal

Malachite is notable for its beautiful green hue and various patterns. Each one is a different canvas of green hues, stripes and swirls. Its unique beauty is what makes it so popular.

1. Gypsum
   Mica
2. Quartz
   Carnelian

Gypsum is the main ingredient in chalk, plaster and drywall. Its soft composition makes it the perfect candidate for all of these household items. It's very common and occurs all over the world.

1. Shell
   Pearl
2. Coral
   Pyrite

Coral is not technically a mineral or gemstone, but it is a naturally forming formation that occurs under the ocean. Coral is alive, and it is vital to the health of our many oceans.

1. Silver
   Jade
2. Topaz
   Cinnabar

The bright-red hue of cinnabar makes it a favorite pigment and dye worldwide. It contains a lot of mercury, so even though it sounds like a bowl of breakfast cereal, it is totally toxic.

1. Brazilianite
   Citrine
2. Peridot
   Topaz

Brilliant brazilianite is native to Brazil and is considered to be a semi-precious stone. It makes a stunning addition to any piece of statement jewelry and shines up so beautifully.

1. Tiger's eye
   Agate
2. Cat's eye
   Mica

Agate is a celebration of different colors, with the base color being a rusty red. When shined up, it is absolutely stunning and makes a gorgeous stand-alone stone or part of a statement ring.

1. Shale
   Onyx
2. Obsidian
   Bloodstone

Bloodstone is a dark green stone that is flecked with red, hence the gory name. It is also known as heliotrope and contains large quantities of green jasper and traces of red hematite.

1. Sapphire
   Garnet
2. Amethyst
   Citrine

Common garnets are deep red, beautiful gems that rival rubies. This semi-precious gem also comes in shades of deep orange and even bright green. Green garnets are the rarest and most valuable.