Nearly five years after Hublot debuted its first sapphire timepiece, the Swiss watchmaker is taking transparency a step further with the introduction of the Big Bang Integral Tourbillon Full Sapphire. The 43mm watch features a case and integrated bracelet made entirely out of polished sapphire. It even omits almost all of the visible screws and reworks the bridges and main plates for a completely unobstructed view of the in-house movement. Fitted with bridges also made from sapphire, the HUB6035 automatic tourbillon appears to float on the wrist as light filters through the case in all directions. The watch is limited to just 30 pieces.