Byzantine Cross Jewelry Kentucky Derby Jewelry Seng Jewelry Other Kentucky Derby Items Seng Jewelers Custom horse items View Cart Check Out Contact Us Privacy Returns .40 ct. Greenish Yellow Seng Firey Diamond™ Ring Platinum ring with a .40 ct. fancy greenish yellow Seng Firey Diamond™ in the center.  The ring also has onyx and 47 accent diamonds that weigh .30 ctw. $4,500.00