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Choose Your Stone

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Natural Diamonds at Shane Co.

Searching for the perfect loose diamond to add to your favorite setting? Shane Co. offers high-quality, GIA-certified loose diamonds in a variety of shapes and sizes. Choose Shane Co. loose diamonds to use in your favorite jewelry pieces.

At Shane Co. we’ve been experts in the diamond business since 1929. This means we know diamonds better than anyone else. But most importantly, there’s always transparency and integrity in everything we do. So no matter what diamond you choose, with Shane Co. you can always be sure you’re getting the most beautiful stone at the best value. As your friend, we promise that all of our diamonds, no matter if they’re natural or lab-grown, are: Conflict-free and ethically sourced, Sourced directly from our vendors, Hand-selected for quality by our expert team, Hand-matched for consistency, Cut to the highest standards, Covered by our Free Lifetime Warranty, Eligible for upgrades, Available in a huge range of shapes and carat weights, Available in our store, where you can use a loupe to look at them up close like our master jewelers

We offer an incredible selection of diamond shapes — round, pear, cushion cut, emerald cut, and more — in a wide range of carat weights, from 1 carat all the way to 5 carats.

Whereas other jewelers buy their diamonds in bulk, we hand-pick every diamond to ensure it’s the highest quality in its grade. We buy directly from the source and own all of our diamonds, which means:

  • - We take pride in selecting only the prettiest stones within each grade
  • - We don't have huge quality discrepancies within the same grade, unlike our competitors
  • - We own all of the diamonds we sell, meaning we always have diamonds in stock, and never have shipping delays
  • - We don’t do fracture filling and other enhancements that may weaken the diamond’s structure
  • - We protect your diamond with our Free Lifetime Warranty, always

FAQs about Natural Diamonds

  • Can you buy loose diamonds?

    Buying a loose diamond can offer many benefits. When you purchase a center diamond stone separately, you will be able to find a diamond that matches your desired specifications and quality characteristics. Once you find the perfect diamond, you can have it mounted on your chosen setting for a beautifully customized piece.

  • What shapes do loose diamonds come in?

    Whether you’re looking for loose diamonds to use in one of our beautiful engagement rings or you’d like to incorporate a diamond into your favorite pendant, there are a variety of diamond cuts to choose from:

    • Asscher: This is a unique square-shaped style that features a “stepped" cut with cropped corners.
    • Emerald: This gem shape features a rectangular body with cut corners and is often used in wedding rings.
    • Cushion: A marriage between a round and a princess cut, the cushion cut features a rounded square shape and is also popular for engagement rings.
    • Heart: This cut is aptly titled; if you’re an old-school romantic, consider a heart-shaped diamond.
    • Marquise: This cut helps enhance the brilliance of your diamond, offering an elongated shape with pointed ends.
    • Pear: The pear shape offers an elegant, refined look. It is a combination of round and marquise cuts.
    • Oval: An oval cut offers a unique spin on the look of a round diamond. An oval diamond’s elongated shape can create the illusion of larger size.
    • Princess: This cut is square-shaped with many sparkling facets and has become popular among modern brides.
    • Round: The round cut is the most popular diamond shape, thanks to the fire and brilliance created by its many facets.
    • Radiant: A radiant cut diamond is similar to an emerald cut but with a facet arrangement similar to that of a round diamond.

  • Where are Shane Co. loose diamonds sourced?

    The Shane family has spent decades fostering relationships with some of the most talented diamond cutters in the world. Because of these relationships, we get first pick of the finest diamonds, ensuring that each stone used in our jewelry offers the utmost brilliance and radiance. When you buy loose diamonds, you’ll know you’re getting the quality you deserve.

  • Does Shane Co. sell other loose gemstones?

    Shopping for loose diamonds online has never been easier, and Shane Co. offers much more than diamonds. Browse our variety of loose gemstones and take your pick from beautiful rubies and sapphires.

  • What are the 4Cs of Diamonds?

    The 4Cs of diamonds are criteria used to assess a diamond's quality and value. These include carat, which measures the weight; cut, which determines the brilliance and sparkle; clarity, which evaluates the presence of flaws; and color, which grades the diamond's colorlessness. A well-rounded understanding of the 4Cs helps buyers make informed decisions when choosing the perfect diamond for their preferences and budget. Learn more about the 4 Cs of a diamond in our Diamonds 101 guide.

  • What are the different shapes Shane Co. offers for their loose diamond for sale?

    Shane Co. offers a diverse selection of diamond shapes to suit various preferences and styles. Some of the popular shapes include: Round: A classic and timeless shape known for its brilliant sparkle and versatility. Princess: A square-shaped diamond with sharp corners, offering a modern and elegant look. Cushion: A square or rectangular shape with rounded corners, providing a soft and romantic appeal. Emerald: A rectangular shape with step-like facets, creating a unique and sophisticated appearance. Asscher: Similar to the emerald shape but with a pavilion cut, offering a distinctive, art-deco look. Oval: A modified round shape with elongated proportions, adding a flattering and elongating effect to the finger. Marquise: An elongated shape with pointed ends, known for its regal and elongating appearance. Pear: A teardrop-shaped diamond, combining the elegance of a round and marquise shape.

  • What is a certified loose diamond?

    A certified loose diamond is a diamond that has undergone a thorough evaluation and grading process by our Shane Co. laboratory. The certification provides an unbiased assessment of the diamond's 4Cs, including carat weight, cut quality, clarity, and color. This certification may also include additional details such as fluorescence, symmetry, and polish. Having a diamond certification ensures transparency and allows buyers to make informed decisions about the diamond's quality and authenticity.

  • How can you tell if a loose diamond is real?

    To verify if a loose diamond is real, you can conduct a few tests, such as a fog test, reading the diamond's certificate, or seeking the advice of a certified gemologist.

Have Questions About Our Natural Diamonds?

Our knowledgeable and friendly team is here for you!

About Diamonds

Whatever style of wedding rings you have in mind, we have the best selection. Shop thousands of exclusive styles, including many wedding rings created by our own world-class designers and artisans. Your Shane Co. wedding rings will be unique and reflect your individual style and personality.

Finding the right diamond

The measure of a diamond’s beauty is a well-executed cut. Using the 4Cs can help you find the perfect diamond. Carat: Carat is the unit of measurement for a diamond's weight. Rarity means larger diamonds of the same quality are worth more per carat. Clarity: Clarity refers to the purity of the diamond and assesses the number, size, relief, and position of inclusions and blemishes. Color: Color refers to the color within the diamond, not the reflected light. The less color there is, the higher the grade. Even the slightest hint can make a dramatic difference in value. Cut: Cut refers to a diamond's symmetry, proportions, and polish, which determine how the diamond’s facets interact with light. Shane Co.'s diamond buyers go to the stone cutters around the world and hand-pick diamonds with the most sparkle from within each grade for our stores and our website. Whatever diamond grade you choose, you will clearly see the difference in the way Shane Co. diamonds sparkle.

Can you buy loose diamonds?

Buying a loose diamond can offer many benefits. When you purchase a center diamond stone separately, you will be able to find a diamond that matches your desired specifications and quality characteristics. Once you find the perfect diamond, you can have it mounted on your chosen setting for a beautifully customized piece.