This small item was an experiment in 3-D printed jewelry, seeing if such an item would be more cost-effective than metal. While the savings were minimal at best, it remains a lovely costume jewelry piece for any sort of occasion. The video above shows its capability to change colors at a rate of about 6 seconds per color through a rainbow, or spectrum, sequence. It is activated by a single CR1632 battery, installed in the back of the pendant with the “bump” (negative) side facing inward. A long length of elastic cord, tied in the back, allows for easy donning and removal.
This item is priced at $18 USD, plus shipping.