Collection: Loose Stones
Discover exceptional brilliance with Gema&Co's Loose Diamond and Moissanite Stones. Explore beautifully cut lab grown diamonds and moissanite gemstones in an incredible selection of shapes and sizes, perfect for creating custom engagement rings, wedding jewelry, and one-of-a-kind designs.
From timeless round brilliant stones to elegant oval, pear, emerald, and radiant cuts, find the perfect loose gemstone to bring your jewelry vision to life. Whether you're choosing a diamond for a custom engagement ring or searching for a dazzling moissanite centerpiece, Gema&Co makes extraordinary gemstones accessible.
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The Asscher Diamond
Regular price From $250 USDRegular priceUnit price / perSale price From $250 USD -
The Asscher Moissanite
Regular price From $160 USDRegular priceUnit price / perSale price From $160 USD -
The Baguette Moissanite
Regular price From $75 USDRegular priceUnit price / perSale price From $75 USD -
The Cushion Moissanite
Regular price From $130 USDRegular priceUnit price / perSale price From $130 USD -
The Emerald Diamond
Regular price From $225 USDRegular priceUnit price / perSale price From $225 USD -
The Emerald Moissanite
5.0 / 5.0
(1) 1 total reviews
Regular price From $130 USDRegular priceUnit price / perSale price From $130 USD -
The Heart Moissanite
5.0 / 5.0
(1) 1 total reviews
Regular price From $125 USDRegular priceUnit price / perSale price From $125 USD -
The Marquise Diamond
Regular price From $180 USDRegular priceUnit price / perSale price From $180 USD -
The Marquise Moissanite
Regular price From $140 USDRegular priceUnit price / perSale price From $140 USD -
The Oval Diamond
Regular price From $275 USDRegular priceUnit price / perSale price From $275 USD -
The Oval Moissanite
5.0 / 5.0
(4) 4 total reviews
Regular price From $120 USDRegular priceUnit price / perSale price From $120 USD -
The Pear Diamond
Regular price From $220 USDRegular priceUnit price / perSale price From $220 USD -
The Pear Moissanite
5.0 / 5.0
(1) 1 total reviews
Regular price From $115 USDRegular priceUnit price / perSale price From $115 USD -
The Princess Diamond
Regular price From $250 USDRegular priceUnit price / perSale price From $250 USD -
The Princess Moissanite
5.0 / 5.0
(2) 2 total reviews
Regular price From $30 USDRegular priceUnit price / perSale price From $30 USD -
The Radiant Diamond
5.0 / 5.0
(2) 2 total reviews
Regular price From $230 USDRegular priceUnit price / perSale price From $230 USD -
The Radiant Moissanite
5.0 / 5.0
(1) 1 total reviews
Regular price From $90 USDRegular priceUnit price / perSale price From $90 USD -
The Round Diamond
5.0 / 5.0
(2) 2 total reviews
Regular price From $225 USDRegular priceUnit price / perSale price From $225 USD -
The Round Moissanite
5.0 / 5.0
(10) 10 total reviews
Regular price From $115 USDRegular priceUnit price / perSale price From $115 USD -
The Tapered Baguette Moissanite
Regular price From $110 USDRegular priceUnit price / perSale price From $110 USD
Shop Loose Stones by Gemstone
Loose Diamonds
Discover the extraordinary beauty of real diamonds with our collection of loose lab grown diamonds. Featuring the same chemical composition, crystal structure, and fundamental physical and optical properties as mined diamonds, lab grown diamonds offer exceptional brilliance, durability, and timeless elegance.
Explore loose diamonds in a variety of stunning shapes, including round, oval, emerald, radiant, pear, marquise, cushion, and other distinctive cuts. Whether you're searching for a classic solitaire center stone or a unique diamond for a custom jewelry design, discover a gemstone that perfectly reflects your vision.
Our lab grown diamonds offer exceptional beauty and quality, with carefully selected options designed to bring out the brilliance of every cut.
Explore our Loose Diamond Collection to find your perfect diamond.
Loose Moissanite Stones
Experience breathtaking sparkle with our collection of loose moissanite gemstones. Celebrated for their remarkable fire and brilliance, moissanite offers an extraordinary combination of beauty, durability, and value.
From classic round brilliant cuts to sophisticated elongated and geometric shapes, loose moissanite stones provide incredible versatility for custom engagement rings and fine jewelry.
Moissanite's high refractive index creates dazzling flashes of colorful light, while its excellent scratch resistance makes it an exceptional choice for jewelry designed to be treasured for years.
Explore our Loose Moissanite Collection and discover a brilliant gemstone that perfectly complements your design.
Discover Your Perfect Gemstone Shape
The shape of your gemstone plays an important role in defining the character and appearance of your finished jewelry.
Round Brilliant: Timeless and exceptionally sparkling, round brilliant stones remain a classic choice for engagement rings and fine jewelry.
Oval: Elegant and elongated, oval gemstones create a graceful appearance with impressive brilliance and flattering proportions.
Emerald: Sophisticated step-cut facets create beautiful flashes of light and a refined geometric silhouette.
Radiant: Combining brilliant-style faceting with a rectangular or square outline, radiant-cut stones deliver extraordinary sparkle and contemporary elegance.
Pear: A romantic combination of rounded and pointed proportions, pear-shaped gemstones offer a distinctive silhouette that feels both timeless and modern.
Marquise: With its elongated shape and pointed ends, the marquise cut creates a striking appearance and beautiful visual length.
Cushion: Soft corners and elegant proportions give cushion-cut gemstones a romantic character with exceptional brilliance.
Princess: Clean geometric lines and brilliant faceting make princess-cut gemstones a beautiful choice for modern engagement rings.
Whether you prefer a traditional shape or something distinctive, Gema&Co offers beautiful loose gemstones to help bring your jewelry vision to life.
Loose Diamonds vs. Moissanite: Which Should You Choose?
Both diamonds and moissanite offer remarkable beauty and durability, making them exceptional choices for engagement rings and fine jewelry. However, each gemstone has distinct characteristics.
Lab Grown Diamonds
Lab grown diamonds are real diamonds created in controlled laboratory environments. They possess the same fundamental physical and optical properties as mined diamonds, including their exceptional hardness and characteristic brilliance.
Diamonds rank 10 on the Mohs hardness scale, making them an excellent choice for jewelry designed for everyday wear.
For those seeking the timeless beauty of traditional diamond jewelry, loose lab grown diamonds offer an incredible combination of brilliance, durability, and value.
Moissanite
Moissanite is a distinct gemstone composed of silicon carbide and prized for its extraordinary fire and colorful flashes of light.
With a hardness of approximately 9.25 on the Mohs scale, moissanite is highly resistant to scratching and exceptionally well-suited for engagement rings and fine jewelry.
Its remarkable brilliance and attractive pricing make loose moissanite stones an excellent choice for those looking to maximize gemstone presence and sparkle.
Ultimately, choosing between diamonds and moissanite comes down to your personal preferences, desired appearance, and budget.
Create Your Own Jewelry With Loose Gemstones
A beautiful loose gemstone is the starting point for creating something truly extraordinary.
Whether you're designing a classic solitaire engagement ring, a distinctive two-stone setting, a matching wedding jewelry set, or an entirely original piece, choosing your gemstone separately allows you to explore the exact shape, proportions, and appearance you envision.
At Gema&Co, we believe exceptional jewelry should reflect the person wearing it. Our custom jewelry services make it possible to pair your chosen gemstone with a beautifully crafted setting tailored to your preferences.
Explore our Bespoke Jewelry Design experience to discover how we can bring your vision to life.
Frequently Asked Questions About Loose Diamonds & Moissanite
What is a loose gemstone?
A loose gemstone is a diamond, moissanite, or other gemstone that has not yet been mounted into a piece of jewelry. Purchasing a loose stone allows you to select its shape and size before deciding how it will be set.
Can I purchase a loose stone for a custom engagement ring?
Absolutely. Loose diamonds and moissanite gemstones are excellent choices for custom engagement rings. Selecting the gemstone first allows you to design a setting around its specific dimensions, shape, and proportions.
Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds are real diamonds with the same chemical composition, crystal structure, and fundamental physical and optical properties as mined diamonds. Their primary difference is how they are formed.
Is moissanite the same as a diamond?
No. Moissanite and diamond are different gemstones. Diamonds are composed of carbon, while moissanite is silicon carbide. Both offer exceptional brilliance and durability, but moissanite typically displays stronger colorful flashes of light.
Which is better for an engagement ring: diamond or moissanite?
Both are excellent choices. Diamonds offer classic brilliance and the highest mineral hardness, while moissanite offers remarkable fire, excellent durability, and attractive value. The best gemstone depends on your preferred appearance, budget, and personal style.
What loose gemstone shapes are available?
Loose gemstones are available in many beautiful cuts, including round, oval, pear, emerald, radiant, cushion, princess, marquise, and other distinctive shapes. Availability and specific dimensions vary by gemstone type.
Are Gema&Co's loose lab grown diamonds certified?
Lab grown diamonds measuring 1.00 carat or larger are IGI graded. Diamonds measuring 0.99 carat or smaller are not individually graded.
If you have questions about a particular diamond or its grading documentation, contact Gema&Co before ordering.
Can I use a loose gemstone purchased from Gema&Co in a custom jewelry design?
Yes. Loose gemstones are an excellent starting point for custom jewelry. Whether you're envisioning an engagement ring, earrings, or another fine jewelry piece, our team can help explore setting options that complement your chosen gemstone.
Find Your Perfect Loose Stone at Gema&Co
Every extraordinary piece of jewelry begins with a beautiful gemstone. Whether you're searching for the timeless brilliance of a lab grown diamond or the dazzling fire of moissanite, Gema&Co offers exceptional loose stones to bring your vision to life.
Explore our Loose Diamonds and Loose Moissanite Stones collections to discover beautiful gemstones in a variety of shapes and sizes.
From choosing your perfect gemstone to creating a custom jewelry design, Gema&Co makes it easier to turn your inspiration into something extraordinary.










