Is that an antique you're wearing? That strumpet of pewter and diamonds?
It's a Benjamin Zucker. From the BZ Family Collection. And yes, it is an antique because it's more than 50 years old. It's from the 15th Century. My God. A modest diamond surrounded by diamond-set shoulders and bezel.
Careful dear, it's been sold by Les Enluminures (NYC) for an untold sum. If you're a collector, and I'm sure you're not, then check out any number of fine art dealers in London, whose specialty is in Elizabethan jewels.
Pour a glass of champagne darlings, and toast to your cubic zirconia knock-off.