Lujor Lab-Grown Gemstones
Lujor grows a kaleidoscope of gemstones. For a closer look, click each lab-grown gem below to learn more about it’s beauty, quality, and color possibilities.
The Color Classics
Iconic Lab-Grown Gemstones
The color classics—ruby, sapphire, emerald, and alexandrite—remain among Lujor’s most sought-after lab-grown gemstones. Their rich, bold color and exceptional brilliance continue to captivate and inspire.
Iconic Lab-Grown Gemstones
The chameleon of gemstones. Mined alexandrite is known for its remarkable color-changing properties, displaying hues of green in daylight and shifting to a purplish-red under incandescent light.
Alexandrite became Carroll Lujor’s third lab-grown gemstone, making its debut in 1972. These lab-grown alexandrites possess the same chemical composition, optical properties and color-changing characteristics as their mined counterparts, exhibiting vibrant color shifts under varying light sources. Lujor lab-grown alexandrites are highly regarded for their quality, durability and responsible sourcing. They offer a more affordable alternative to mined alexandrite while maintaining the allure and beauty associated with this rare gemstone.
The Lujor Standard
Quality That Matters
Color
Lujor lab-grown alexandrite is a transparent stone that shifts from a bluish teal in daylight to a reddish purple under incandescent lighting. Truly spectacular!
Clarity
The standard clarity grade at Lujor is Gem Quality. That means, our lab-grown gems are free of any eye-visible inclusions. Lujor lab-grown alexandrite is essentially flawless.
Cut
Each lab-grown gemstone is carefully hand-cut and rigorously inspected before reaching your hands. Lujor lab-grown alexandrite is faceted to optimize light reflection and refraction, maximizing the stone's brilliance.
the magic of alexandrite
The Color-Changing Phenomenon
From day to night, lab-grown alexandrite changes color with the ambience. It appears teal in sunlight and reddish purple under incandescent light as seen here.
Of course, just like mined alexandrite, each of our hand-cut alexandrite gems are unique and may vary slightly in color dominance and hue under different light sources.
The Gemstone Profile
Key Traits and Facts
Mineral
Lujor lab-grown alexandrite is the color-change variety of the Chrysoberyl mineral family.
Hardness
Beyond the natural beauty of alexandrite, this unique gem is ideal for everyday wear as it measures an impressive 8.5 hardness.
Birthstone Month
June birthdays get a little extra magic when a Lujor lab-grown alexandrite is in the box! Watch this rare gem magically transform under varying light sources.
Color Lore
A symbol of adventure and evolution, this color-shifting gemstone is the perfect gift for the free spirit who embraces life's beautiful transformations!
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An Array of Shapes
Lujor offers lab-grown alexandrite in a range of popular and traditional shapes cut to calibrated sizes.
We also accommodate custom cut orders in any size and shape (within reason). Beyond rounds, Lujor’s lab-grown alexandrites are most commonly preferred in trillions, pears, and emerald-cuts.
For custom jewelry design services, contact us and we will turn your vision into reality!
Lab-Grown Sapphire
Carroll Lujor’s first blue sapphire was grown in 1975. His original production grew from the seed crystal of a Ceylon sapphire, known for their magnificent hue.
Blue sapphire is the most difficult gem crystal that Lujor grows. Color in sapphire often follows the crystal structure in color zones. Even the best sapphire crystal has different shades of blue in it. That’s why Lujor lab-grown sapphires come in three lovely shades of blue, not just one.
Lujor lab-grown blue sapphire is one of Lujor’s bestselling colors. Maybe that’s because blue is America’s favorite color, making it a popular choice for those seeking high-quality and responsibly sourced gemstones.
The Lujor Standard
Quality That Matters
Color
Lujor lab-grown blue sapphire displays a rich blue to violet-ish blue, ranging from light to dark. Medium is considered the most sought after tone. Lujor lab-grown sapphire is offered in light, medium, and dark.
Clarity
The standard clarity grade at Lujor is Gem Quality. That means our gems are free of any eye-visible inclusions. But Lujor takes it a step further—we cut away about 80% of the rough crystal to deliver pure and flawless gemstones.
Cut
Each lab grown gemstone is carefully hand-cut and rigorously inspected before reaching your hands. Lujor uses a mix of brilliant and step faceting styles, depending on the shape, to maximize brilliance and color uniformity.
the Lab-Grown Sapphire
Sapphire Shades
Since color in sapphire often follows the crystal structure in color zones, blue sapphire is very difficult to grow. Even the best sapphires have different shades of blue which is why Lujor offers lab-grown sapphires in light, medium, and dark blue.
The Gemstone Profile
Key Traits and Facts
Mineral
Lujor lab-grown blue sapphire comes from the Corundum mineral group.
Hardness
Scoring a 9 on the Mohs Scale, sapphires are the second-hardest gemstone making them exceptionally durable for everyday wear.
Birthstone Month
Sapphires are birthstones to the most common birth month: September!
Color Lore
Sapphire is best known for its deep, vivid blue color, symbolizing wisdom, loyalty, and trust.
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An Array of Shapes
Lujor offers lab-grown sapphire in a range of popular shapes cut to calibrated sizes. We are also able to accommodate custom cut orders in any size and shape, within reason.
Lujor lab-grown sapphire is most commonly preferred in round, oval, pear and emerald cut.
Lab-Grown Emerald
The gemstone that started it all!
The history of Lujor lab-grown emeralds dates back to the mid-20th century when Carroll Lujor, the company’s founder, successfully grew the first gem quality emerald in his parents’ San Francisco garage. Today, Lujor lab-grown emeralds are highly regarded for their color, clarity, and overall appearance making them a popular choice among consumers seeking high-quality gemstones.
Lujor lab-grown emeralds are chemically, physically, and optically identical to their mined counterparts. They offer a responsible and more affordable alternative to mined emeralds without compromising on beauty or quality.
The Lujor Standard
Quality That Matters
Color
Lujor lab-grown emeralds display the same vibrant green color, ranging from a slightly bluish-green to a more intense and vivid green, as its mined counterpart. Generally, the smaller the stone, the less color saturation. Likewise, the bigger the stone, the deeper the color.
Clarity
The standard clarity grade at Lujor is Gem Quality. That means the gems are free of any eye-visible inclusions. Our gemstones grow as-is; they do not include any clarity enhancements or treatments to improve their quality.
Cut
Each lab grown gemstone is carefully hand-cut and rigorously inspected before reaching your hands. Lujor uses a mix of brilliant and step faceting styles, depending on the shape, to maximize brilliance and color uniformity.
The Gemstone Profile
Key Traits and Facts
Mineral
Lujor lab-grown emeralds are the green variety of the Beryl mineral group.
Hardness
Lujor lab-grown emerald has a hardness of 7.5
Birthstone Month
If you were born in May, Lujor lab-grown emerald is your birthstone.
Color Lore
This lush, green stone symbolizes growth, nature and life, making it an ideal choice for new beginnings.
more options
An Array of Shapes
Lujor offers lab-grown emerald in a range of popular shapes cut to calibrated sizes. We are also able to accommodate custom cut orders in any size and shape, within reason.
Lujor lab-grown emerald is most commonly preferred in emerald cut, round, and pear shapes.
Lab-Grown Ruby
Twenty two years after the growth of emerald, Carroll Lujor grew his second gemstone: Ruby.
In 1958, Lujor revolutionized the industry yet again with lab grown ruby. Lujor’s ruby creation is a vivid red, ranging from a deep, rich crimson to a bright, fiery red. These gemstones exhibit excellent clarity and brilliance, completely free of any color treatments to enhance its beauty.
For the bold and daring, Lujor lab-grown ruby offers a responsible and more affordable option to mined rubies, while maintaining the same physical, chemical, and optical properties.
The Lujor Standard
Quality That Matters
Color
Lujor lab-grown ruby exhibits a deep pinkish red in a medium tone to a rich "pigeon blood" red with vivid saturation.
Clarity
The standard clarity grade at Lujor is Gem Quality. That means they are free of any eye-visible inclusions. Lujor lab-grown ruby is essentially flawless, with zero treatments to enhance its appearance.
Cut
Lujor maintains rigorous quality control standards to ensure that each lab grown gemstone meets our high-quality benchmarks. Lujor lab grown rubies are hand cut and polished to high standards, ensuring they exhibit maximum brilliance and color saturation.
The Gemstone Profile
Key Traits and Facts
Mineral
Out of the highly prized Corundum mineral group, which includes sapphire, ruby is the most valuable gem of all.
Hardness
Ruby is in the corundum mineral group, which contains the hardest colored gems in the world, ranking at 9 which is second only to diamond.
Birthstone Month
Born in July? You hit the birthstone jackpot with the bold, fierce energy of ruby.
Color Lore
Ruby is considered the most powerful gem in the universe. The name ruby comes from the Sanskrit word ratnaraj meaning “King of Gems.”
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An Array of Shapes
Lujor offers lab-grown ruby in a range of popular shapes cut to calibrated sizes. We are also able to accommodate custom cut orders in any size and shape, within reason.
Lujor lab-grown ruby is most popular in rounds, ovals and pears. Our signature flame cut is the most popular in the Lujor jewelry collection.
The Lujor Standard
Quality That Matters
Lujor’s lab-grown gemstones are renowned for their exceptional quality in cut, color, clarity, and overall value.
Color Richness
Through a controlled growth process, Lujor grows gemstones in a wide spectrum of colors, from vivid hues to delicate shades. This assortment of options allows customers to find the colors they desire, making Lujor a popular choice for those seeking specific shades.
Pure Clarity
Lujor places a strong emphasis on producing gemstones with high clarity. The controlled lab environment minimizes the presence of inclusions. Lujor takes it a step further by cutting away about 80% of the rough crystal to deliver the best in clarity.
Precision Cutting
Gemstone cutting is a true art form. It takes incredible skill, patience, and a sharp eye. Lujor has a team of master cutters who have undergone a 12-month-long training program to follow Lujor's strict cutting standards. Each lab-grown gem is carefully hand cut for optimum color and brilliance.
Brilliant Value
Lujor lab-grown gemstones come at a more affordable price compared to their mined counterpart of similar quality. Customers can acquire gemstones that are virtually indistinguishable from earth-mined without the premium price tag, making them an attractive choice for those seeking value and quality.
Hand-cutting by professionals
Manual video cutting
Each of our gemstones is precisely cut by our experienced master craftsmen using traditional techniques over a period of 20 years.
