Vacheron Constantin La Kallista

In 1979 Vacheron Constantin made Kallista, one of the most expensive wristwatches. Its initial price was $5 million, but today the watch is valued at about $11 million.
Kallista had 118 flawless D colour emerald-cut diamonds totalling 130 carats.
The frame was crafted from a gold ingot weighing 1 kg
It took about 6,000 hours for the watch masters to make this watch and about 20 months for jewelers to enrich the watch.