The ultimate testament to Jacob & Co's unmatched watchmaking and gem-setting experience, know-how and singular position is the Billionaire II Diamonds on Bridges. In the world of high jewelry horological masterpieces, the Billionaire has opened a parallel universe on its own where it exists in perfect solitude, unrivaled and untouched. Approximately 430 diamonds totaling more than 161 carats make up the case and bracelet of the Billionaire, encapsulating the Exclusive Jacob & Co JCAM39 skeletonized tourbillon caliber. Haut de gamme haute joaillerie meets cutting-edge haute horlogerie with the Billionaire II.

The one-minute tourbillon of the Billionaire II Diamonds on Bridges is haute horlogerie's response to the high jewelry tour de force that surrounds it. With its black mirror polished upper cage - a finishing technique that requires immense patience and dexterity - hand-beveled and hand-polished edges and calculated operation, the tourbillon is the only complication to live up to the breathtaking visual experience of the diamond-set exterior.

The tourbillon encapsulates the balance wheel, hairspring, escape wheel and a number of other crucially important, superbly finished components. Its most careful assembly is followed by a painstaking fine-tuning process, allowing the Billionaire II to keep accurate time throughout its extended, 72-hour power reserve.

Jacob & Co. is one of the few brands that has the legitimacy to create high and fine jewelry, as well as high-end watches.

The diamond and gemstones industry is a closed society, and it is really a relationship business. Sourcing the very best diamonds and gemstones depends on reputation and personal connections, and thankfully Jacob & Co. has solid, decades-long relationships.

As a result, Jacob & Co. has access to the very best sources of diamonds and gemstones from all over the world. Many of the gem-set timepieces, Billionaire, require meticulous care in the choosing of stones for quality, cut, clarity, and matching color. This can take many months or years, depending on the exact colors needed.

Jacob & Co. is also an expert in the setting of these stones, working with the very best gem setters in the industry. The diamonds in the Billionaire II Diamonds on Bridges are set using the difficult and sophisticated "invisible setting" (meaning none of the supporting metal is visible).

A grand total of 161.40 carats carats of 428 invisibly set diamonds make up the case, bezel, bracelet and skeletonized bridges of the Billionaire II Diamonds on Bridges, with an additional 0.96 carat rose-cut diamond adorning the crown. The case is set with 39 emerald cut diamonds totaling 46.52 carats while the inner-ring framing the dial is set with 76 diamonds totaling 2.33 carats. The bejeweled bracelet is set with 256 emerald cut diamonds totaling 110.07 carats. The skeletonized bridge is set with 57 diamonds totaling 1.52 carats. Finding, selecting and cutting the diamonds set into the exterior of Billionaire II posed an immense challenge even in the realms of haute joaillerie.

Having fully mastered its gem-setting expertise has allowed Jacob & Co to overcome this challenge and present ultra-high-end watchmaking in a setting that is completely unimaginable. The resulting contrast between two distinctly different, yet equally enthralling disciplines creates tension as much as it does inimitable beauty.

The case of the Billionaire II Diamonds on Bridges measures 54 by 40 millimeters and is 11 millimeters thick between the top of its anti-reflective sapphire crystal and the lowest point of its case. Its case structure is crafted from 18K White Gold with a bezel, as well as lugs and case profiles fully set with emerald-cut diamonds. The case-back is sapphire crystal with an 18K White Gold frame.

The Billionaire II Diamonds on Bridges features a sparkling diamond-paved skeletonized movement structure that serves as the spectacular backdrop of its hands, whereas the hour markers are 12 baguette-cut white diamonds, set into the periphery of the flange frame. The hands are partially skeletonized and are treated with ruthenium, a rare transition metal belonging to the platinum group of the periodic table.

The perfect combination of high jewelry and high-watchmaking

The entirety of the watch, outside of the movement, is bead-set with the highest quality Emerald-cut white diamonds, including the case, lugs, bezel, bracelet, clasp and skeletoized bridges

Individual stones range in size, up to 3 carats

The diamonds in the Billionaire II Diamonds on Bridges are set using the difficult and sophisticated bead setting

Total carat weight is over 161 carats

Expertly skeletonized 60-second, high-watchmaking tourbillon

Skeletonized hands stand out over the sparkling tourbillon movement