Gemstones are mineral rocks that have been cut, polished, and turned into jewelry. Historically, gemstones were classified into two types: precious and semi-precious stones. So, what are precious stones? Many people are surprised to learn that only four gemstones were traditionally considered precious: diamond, emerald, ruby, and sapphire. All other gemstones were classified as semi-precious.
Today, however, modern gemology places less emphasis on these distinctions. Some semi-precious gemstones can be rarer and more valuable than the four traditional precious stones. Even so, understanding the different types of precious gemstones remains a helpful starting point when shopping for jewelry.
Many gemstones are thought to hold special meaning and powers for those who wear them. These beliefs stem from different mythologies, folklore, and cultures like ancient Greece, Rome, Egypt, and even the Bible.
Knowing the hidden meanings behind each gemstone can help you decide which piece of jewelry to buy. This gemstone jewelry guide explores the four traditional precious stones and the symbolism behind them.

How to Purchase Gemstone Jewelry
The 4Cs are used to determine the value of a precious stone. The purity of a gem’s color, the symmetry of its cut, the extent of its clarity, and the size of its carat are all factors that come into play when deciding the value and price of gemstone jewelry. When shopping for diamonds, the cut is the main deciding factor while color remains the most important attribute for the remaining precious stones.

Diamond: The Symbol of Forever
The diamond is a symbol of love and faithfulness, and is traditionally used in engagement rings and wedding bands. This is one of the hardest substances found on earth, and it scores a perfect 10 on the Mohs Hardness Scale.
The diamond’s rarity, strength, and fortitude serves as the perfect symbol of a marriage’s longevity. It is also the birthstone for April birthday celebrants and the gem of choice for those celebrating their 10th and 60th wedding anniversaries.
The Taylor-Burton pear-shaped diamond is an example of how a great diamond is almost always tied to a great romance. This was a gift by the actor Richard Burton to the love of his life Elizabeth Taylor. The diamond was originally set as a ring but due to its large size, Elizabeth commissioned Cartier to turn it into a custom necklace instead.

Sapphire: The Royal Favorite
Sapphires come in a variety of colors, the most famous of which is cobalt blue. They are the second hardest stone after diamonds with a rating of 9 on the Mohs Scale of Hardness. A sapphire stone is believed to have restorative properties and can promote inner peace. This stone is one of the most popular gemstones used in royal jewels.
Sapphire jewelry, like this tennis blue necklace, is the ideal gift for those who are born in September and are celebrating their 5th and 45th wedding anniversaries.
One of the most famous sapphire stones is the oval blue Ceylon sapphire engagement ring. Its current owner is Kate Middleton, the Duchess of Cambridge, and was originally worn by Diana, the late Princess of Wales.

Emerald: The Rarest of Them All
The emerald’s vibrant green hue is associated with hope, renewal, and new beginnings. For these reasons, it's the perfect gemstone to give at the beginning of a romantic relationship. This stone also represents the joys of Spring, and also grants the wearer abundance and happiness.

Emerald jewelry is given to those who were born in the month of May and are celebrating their 20th and 35th wedding anniversaries. The Vladimir tiara remains a favorite of Queen Elizabeth's, which she would usually wear with large emerald stones interspersed through the tiara’s loops.

Ruby: A Passionate Gem
Because of ruby’s likeness to the color of blood, many believed this stone to hold the power of life. It was also believed to provide the wearer with courage, vitality, and victory. This stone was also known to inspire passion, which is why it’s the perfect gift for a woman in love.
Ruby jewelry is often given as a symbol of one’s love and devotion. It’s the birthstone for July birthday celebrants and the gemstone for people celebrating their 15th and 40th wedding anniversaries.

Understanding Precious and Semi-Precious Gemstones
For those wondering what precious stones are vs semi-precious stones, the distinction originated centuries ago and was largely based on rarity and historical value rather than beauty alone. Today, jewelers and collectors tend to focus more on a gemstone’s quality, color, and desirability than on whether it falls into a precious or semi-precious category.
Whether you're drawn to the brilliance of a diamond, the rich red of a ruby, the vivid green of an emerald, or the deep blue of a sapphire, understanding these classifications can help you make a more informed purchase. Exploring the many varieties of gemstones is one of the most rewarding aspects of building a jewelry collection, and knowing the stories behind each stone adds another layer of meaning to every piece you wear.
Frequently Asked Questions About Gemstones
What are the 4 precious gemstones and their meaning?
The four traditional precious gemstones are diamond, ruby, sapphire, and emerald. Diamonds are associated with love, commitment, and strength. Rubies symbolize passion, vitality, and courage. Sapphires are often linked to wisdom, loyalty, and inner peace, while emeralds represent growth, renewal, and hope. Together, these stones make up the traditional list of precious stones recognized throughout history.
Which precious gemstone is the most valuable?
The answer depends on rarity, quality, size, and market demand. Among the four traditional types of precious stones, exceptional diamonds often command the highest prices. However, rare rubies, sapphires, and emeralds can also achieve remarkable values at auction.
Which precious stone is best for jewelry?
There is no single best gemstone for jewelry, as each offers unique characteristics. Diamonds are prized for their durability and brilliance, sapphires for their hardness and range of colors, emeralds for their rich green hue, and rubies for their vibrant red color. The best choice often depends on personal style and how the jewelry will be worn.
Which precious gemstone is best for engagement rings?
Diamonds remain the most popular choice for engagement rings due to their durability and symbolism. However, sapphires, emeralds, and rubies have become increasingly popular among couples looking for something more distinctive. Each of these precious gemstones offers a meaningful alternative to a traditional diamond engagement ring.
How do I choose the right precious gemstone for jewelry?
When choosing a gemstone, consider factors such as color, durability, symbolism, and how often the piece will be worn. Understanding the various types of gemstones used in jewelry can help narrow your options. Some people choose a birthstone or anniversary gemstone, while others select a stone based on its appearance or personal significance.
What is the difference between precious and semi-precious stones?
Historically, precious gemstones referred only to diamond, ruby, sapphire, and emerald, while all other gems were categorized as semi-precious. Today, the distinction is less important than it once was. Modern jewelers often focus more on a gemstone's rarity, quality, and beauty rather than its traditional classification.



