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Loose Diamonds & Gemstones

Discover the perfect loose diamond or gemstone to bring your vision to life. Choose from a curated selection of natural and lab-grown diamonds, along with beautiful gemstones for custom jewelry and one-of-a-kind designs.

We’re committed to responsible sourcing, and all of our loose natural diamonds follow the Kimberley Process to help ensure they are conflict-free.

Look Through Our Wide Selection of Loose Diamonds & Gemstones

  • Certified Loose Mined Diamonds


    Explore thousands of certified loose natural diamonds with images and videos. Search by shape, carat, color, clarity, and price or let our free Personal Diamond Shoppers help you find the perfect diamond for your budget.

    Shop Certified Loose Diamonds

  • Loose Lab Grown Gemstones

    Diamond alternatives aren’t limited to sparkling white stones. Explore colorful gemstones like natural and lab-created rubies, blue sapphires, peachy-pink morganite, and more. We can source virtually any gemstone, and our Personal Diamond & Gemstone Shoppers can help you find the perfect stone for your setting.

    Shop Loose Gemstones

  • Loose Lab Created Diamonds


    By popular demand, we’ve added a Lab Created Diamond collection, featuring thousands of diamonds that are physically and chemically equivalent to naturally mined diamonds. Enjoy the same sparkle, color, and durability at a more affordable price.

    Shop Loose Lab Diamonds

  • Certified Fancy Colored Diamonds

    Add some color to your loose stone diamond search, and search our fancy colored diamond collection. From gorgeous canary diamonds to black diamonds and every color in between.


    Shop Fancy Colored Diamonds

  • Shop By Unique Shape!

    Looking for a diamond with a distinctive shape and character? Explore our collection of unique loose lab-grown diamonds, featuring trilliant, rose cut, Euro cut, lozenge, kite, hexagon, octagon, and old mine cuts. Perfect for creating a one-of-a-kind engagement ring or custom piece, these diamonds offer a unique alternative to traditional shapes.

    Shop Our Unique Shape Loose Diamonds

  • Loose Moissanite

    Moissanite is a popular choice for its exceptional value, brilliant sparkle, and durability. Lab-created and affordable, it’s a sustainable, ethical alternative to diamonds, perfect for engagement rings, earrings, and necklaces. Explore our collection of Kori and Harro Gem Moissanite.

    Shop Loose Moissanite

Not Sure Which One to Pick? We're Here to Help.

Loose Diamonds and Gemstones

Finding the right loose diamond can feel overwhelming, especially if you’re purchasing one for the first time. At deBebians, we’re here to make the process simple, personalized, and stress free. Our GIA Graduate Gemologists can search through thousands of diamonds, including many that aren’t listed on our website, to find options that match your preferences. Simply share your desired shape, size, budget, or other criteria, and our Personal Diamond Shopper will present you with beautiful options tailored to your needs.

Expert diamond shopping assistance at no charge.

Guided by Principles, Not Profit.

Take advantage of free unbiased diamond recommendations from one of our our non-commissioned GIA Graduate Gemologists. Our loose stone diamond sales uphold the following principles:

Striking a Balance

We find diamonds that give the best value for your money by carefully balancing the 4 Cs and analyzing all characteristics that affect diamond quality.

Unbiased Sourcing

We search the world, not our own inventory, for the best diamonds available. When we suggest a diamond, it is because we truly believe in it and would buy it ourselves.

Strict Grading

We uphold the firm grading principles of GIA and personally inspect every diamond for sparkle and beauty before shipping it to you.

Loose Diamond & Gemstone FAQ

Your choice depends on your budget, style preferences, and values. Natural diamonds offer timeless legacy and natural rarity. Lab-grown diamonds share identical physical, chemical, and optical properties to mined diamonds at a significantly lower cost per carat. Colored lab grown gemstones like sapphires, emeralds, and rubies provide unique individuality and vibrant hues. We help you compare fire, durability, and value across all three categories to find the ideal match for your ring.

Yes. Every diamond (lab grown or natural) center stone we offer is graded and accompanied by an official grading dossier from premier independent gemological laboratories, such as the GIA (Gemological Institute of America) or IGI (International Gemological Institute). Each report details the stone's specific details and carat weight—along with microscopic laser inscription numbers etched directly on the stone's girdle.

Cut quality is universally considered the most critical factor because it directly determines the stone's light return, sparkle, and visual brilliance. Even a diamond with flawless clarity and colorless grading will appear dull if it is poorly cut. We prioritize Excellent and Ideal cut grades to ensure maximum brilliance and fire.

Stone shapes carry distinct optical properties and finger coverage. Elongated shapes like Oval, Emerald, Radiant, and Pear create an elongating effect on the finger and often display a larger surface area per carat, while classic Round Brilliant cuts offer the highest level of sparkle. Our team evaluates your setting's prong structure, bezel depth, and profile height to ensure structural safety and optimal aesthetic balance.

For rings intended for everyday wear, stone hardness on the Mohs scale is essential. Diamonds (natural and lab grown)score a 10 (the hardest known mineral), making them ideal for lifetime daily use. Moissanite, a great diamond alternative, measure 9.5 on the Mohs scale. Corundum varieties such as Sapphires and Rubies score a 9 and are exceptionally durable. Softer stones (under 7.5 to 8 Mohs) require protective mounting styles like bezels or halos to shield the stone from accidental impacts.