This Two Tone Halo Necklace complements every outfit. Each CRISLU flawless and exquisitely cut cubic zirconia stone is handset in precious .925 sterling silver and finished in pure platinum and 18kt yellow gold for a total diamond equivalent weight of 1.40 ctw. This necklace is adjustable from 16" to 17" & 18". CRISLU jewelry is 100% hypoallergenic.