This name captures the mysterious and elegant nature of the key motif in the necklace.

"Enigmatic" evokes a sense of intrigue, symbolizing the hidden meanings and secrets that keys often represent. "Elegance" signifies the graceful and refined design of the necklace, adding a touch of sophistication. "Enigmatic Elegance" combines these elements, creating a name that conveys both the enigmatic allure and the stylish beauty of the key motif, offering a captivating and unique choice.