About Alberto
Welcome to the colorful world of Alberto! As a recognized leader of fine tanzanite jewelry, as well as over 45 exotic precious and semi-precious colored gemstones, Alberto has a selection of unique designs of uncompromising quality. Handcrafted in the U.S.A., all designs are either one-of-a-kind or limited edition!
Established in 19851stDibs seller since 2025
Featured Pieces
Emerald Cut Ametrine 12.00 ct – Natural Bi-Color Purple to Golden Gemstone
By Alberto
Located in GREAT NECK, NY
Discover the allure of this exquisite Ametrine gemstone, showcasing an emerald step cut. This captivating gemstone boasts a rich natural purple to yellow hue, making it a stunning ch...
Category
2010s North American Contemporary Loose Gemstones
Materials
Amethyst, Citrine
Natural Emerald Cut Ametrine 11.78 ct
By Alberto
Located in GREAT NECK, NY
Discover the allure of this exquisite Ametrine gemstone, showcasing an emerald step cut. This captivating gemstone boasts a rich natural purple to yellow hue, making it a stunning ch...
Category
2010s North American Contemporary Loose Gemstones
Materials
Amethyst, Citrine
8.79 Carat Cushion-Cut Natural Rich Brown Tourmaline Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This exquisite rich brown sparkling beauty showcases a deep, luxurious hue with exceptional brilliance and clarity. Expertly faceted to enhance its warm undertones and internal fire,...
Category
2010s North American Contemporary Loose Gemstones
Materials
Tourmaline
8.79 Carat Cushion-Cut Natural Rich Brown Tourmaline Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This morganite's enchanting pastel tone and exceptional sparkle make it an ideal centerpiece. Add a touch of sophistication to your collection with this exquisite natural pink morgan...
Category
2010s American Contemporary Loose Gemstones
Materials
Morganite
2.87 Carat Pear-Cut Natural Vivid Rosy Pink Tourmaline Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This stunning natural pink tourmaline weighs 2.87 carats and features a beautifully proportioned pear cut that enhances its vivid, rosy-pink color and radiant brilliance. Its bright ...
Category
2010s North American Contemporary Loose Gemstones
Materials
Tourmaline
9.72 Carat Oval-Cut Natural Soft Blush-Peach Pink Morganite Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This gorgeous 9.72-carat natural pink morganite showcases a stunning blend of soft blush and peach tones that radiate warmth and elegance. Expertly cut into a brilliant oval shape (1...
Category
2010s North American Contemporary Loose Gemstones
Materials
Morganite
3.80 Carat Oval-Cut Natural Wine Red Tourmaline Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This vibrant 3.80-carat wine-colored tourmaline captures attention with its deep, richly saturated hues of crimson and rose red. Expertly cut in an oval shape (11.8 x 8 mm), the gems...
Category
2010s North American Contemporary Loose Gemstones
Materials
Tourmaline
1.31 Carat Emerald-Cut Natural Aqua Blue Bi-Color Tourmaline Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This elegant 1.31-carat natural bi-color tourmaline features a mesmerizing blend of delicate aqua-blue and clear tones, creating a soft, luminous appearance. Expertly cut in a classi...
Category
2010s North American Contemporary Loose Gemstones
Materials
Tourmaline
2.35 Carat Oval-Cut Natural Soft Green Amethyst Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This stunning 2.35-carat natural green amethyst features a beautifully faceted oval cut (10 x 8 mm) that enhances its soft, translucent green hue. With its refined clarity and elega...
Category
2010s North American Contemporary Loose Gemstones
Materials
Amethyst
2.68 Carat Emerald-Cut Natural Golden Yellow to Honey Bi-Color Citrine Loose Gem
By Alberto
Located in GREAT NECK, NY
This remarkable 2.68-carat natural bi-color citrine displays a beautiful gradient of golden yellow transitioning into warm honey tones, capturing the essence of sunlight in gemstone ...
Category
2010s Contemporary Loose Gemstones
Materials
Citrine
2.84 Carat Emerald-Cut Natural Warm Golden Citrine Loose Gemstone
By Alberto
Located in GREAT NECK, NY
A timeless gemstone that exudes warmth, positivity, and sophistication, perfect for custom rings, pendants, or fine jewelry creations. This brilliant 2.84-carat natural citrine radia...
Category
2010s North American Contemporary Loose Gemstones
Materials
Citrine, Emerald
1.11 Carat Oval-Cut Natural Rich Forest Green Sapphire Loose Gemstone
By Alberto
Located in GREAT NECK, NY
This exquisite 1.11-carat natural green sapphire showcases a rich forest-green hue with exceptional brilliance and clarity. Expertly cut in a 5 x 7 mm oval shape, this gemstone combi...
Category
2010s North American Contemporary Loose Gemstones
Materials
Green Sapphire
More About Alberto
All Alberto pieces are handcrafted in the U.S.A.
All Alberto pieces are handcrafted in the U.S.A.