Vintage lucite cabochons are a blue with white color to make a marble effect. The cabochons measure 35mm round and 4mm thick. Remember, cabochons have a flat back with no hole. Circa 1960s. Quantity: 2 cabs The vintage cabochons are new, old stock that had been sitting in a warehouse for years and now brought to you to create your jewelry designs. They have been sitting around for decades which can cause dirt or dust to accumulate on them and might need to be wiped or washed clean as I do not go through each bead.