Filigree Jewelry: Sterling Silver Crystal Reverse Intaglio Filigree Ring. A matching Blue color crystal filigree pendant is available for purchase. This carved blue colored crystal filigree ring is handcrafted and finished in intricate sterling silver detail. Filigree rings are timeless in style and can be enjoyed, cherished and handed down as precious family heirlooms. This ring is new and a quality sterling silver antique and collectible reproduction. All of my pieces are high quality sterling silver. You may see the word Sterling or a mark of .925 for 925/1000 pure silver.