Cobalt Blue Sea Glass Heart Necklace - This petite piece of cobalt blue sea glass has been tumbled by the sea, into a delicate heart shape... and just in time for Valentine's Day! Measuring just shy of 1/2' in length, this pretty cobalt blue ocean treasure is wrapped in sterling silver wire, and hangs on an 18' sterling silver Venetian box-style chain. Images are provided to gauge the size of this piece of authentic sea glass. The coin was used as a comparison and is not included with the necklace.