Calia
Featuring Lab-Grown Diamonds
Optically, physically, chemically and thermally the same as mined diamonds -- at a surprisingly affordable price.
What Are Lab-Grown Diamonds?
For 4,000 years diamonds came from one place: the ground.
Since 1958 it's been possible to grow them in a lab, but the quality wasn't good enough for use in jewelry. That changed about 10 years ago when technology advanced to the point where we're able to create real diamonds for far less than on the cost of digging them out of the earth.
Lab-grown diamonds are diamonds. Even a jeweler with a 10x loupe can't tell the difference. (You need special equipment designed to detect the 415.5nm absorption spectrum caused by N3 in mined diamonds.)
We're now able to offer lab-grown white diamonds at around 1/3 the price of mined. And we're able to offer exceptionally rare color diamonds at a fraction the price of those found underground.
Color Diamonds
Just1 in 10,000 mined diamonds has color, and many of those are a somewhat unappealing yellowish brown. But once in a great while the mines reveal a blue, pink, yellow, orange, brown, or red diamond. Given their extreme rarity, these gems are very expensive, and price goes up exponentially with size. A mined Fancy Intense Blue could easily sell for $1 million/carat. Consequently it's no surprise that few people have ever seen a blue diamond, much less owned one.
It's possible to create color artificially using annealing or other treatments. But that produces a pastel color that lacks the depth and complexity of a mined colored diamond.
At Calia, our blue, yellow, and orange diamonds are "as-grown", and replicate the process found in nature. To create the blues, boron gas is introduced during the growth phase. Most of the time that makes the diamond whiter. But sometimes, rarely, for reasons we don't understand and can't control, it turns the diamond blue.
And we can make these exceptionally rare diamonds available to you for about 3% of the cost of the mined equivalent.
Our Jewelry
All of our jewelry is handmade to exacting standards at our workshop in Tokyo. We offer a wide range of designs, and specialize in custom orders that highlight the beauty of your lab-grown diamond.
Just call or drop us an email to start a conversation about the diamond jewelry of your dreams.
FROM THE COLLECTION
The Jingjing
Elongated cushion lab-grown diamond set in platinum on a rose gold ring.
The Marissa
0.58-cart as-grown Fancy Intense Blue Radiant cut VVS2
Set in platinum
¥490,000
1.01-carat F/VS1/3Ex lV -grown diamond nestled in a classic four-prong platinum setting with a split platinum chain for added stability.
¥550,000
0.38-carat as-grown Fancy Intense Yellowish Orange Pear Shaped Brilliant Set in Black Gold
¥380,000
Exceptionally rare as-grown + proprietary treated 1.06-carat red diamond
Cushion cut
¥850,000
The Aya
20-point G+ VS+ "head" with a platinum upper body and gold lower body
The Christa
A total of 2.04 carats of G+ diamonds set in yellow gold or platinum
Pinks are available in colors ranging from orangey-pink, to pure pink, to purplish pink. Natural pinks are caused by a distortion in the diamond's crystal lattice rather than exposure to a gas, so our pinks must be treated rather than as-grown.
The Elisabeth
Exceptionally rare 2.68 carat as-grown Fancy Deep Blue cut-cornered rectangular modified brilliant set in a platinum ring.
The Caroline
Two Pear-Shaped Diamonds Set in PlatinumFancy Vivid As-Grown Blue: 0.33 carats VVS
D/E White: 0.26 carats VS
The Emilia
As-grown Fancy Vivid Blue 0.42-carat cut-cornered rectangular modified brilliant diamond set in platinum with a platinum chain.
The Julia
Pear-shaped 0.32-carat as-grown Fancy Intense Blue diamond set in platinum with a platinum chain.
Exceptionally rare 2.01 carat Fancy Intense Blue as-grown diamond
¥4,800,000
Who We Are
About the Founder
Calia Next Generation Diamond Jewelry was created by David W. Rudlin, a 20-year veteran of the diamond industry who spent a decade with De Beers as Director of International Markets and President of Japan.
He started the company to answer the question "What can we do now that we couldn't do before?" That led to a focus on color diamonds, particularly blues, and an emphasis on diamond-intensive designs that maximize the cost advantages of next generation diamonds.