This is a very impressive Mid-Century Modern hand blown decanter made by the Rainbow Glass Company around the 1950's/1960's. It features a stunning flame/tear drop stopper. The body of the decanter is crackle glass with a rough pontil. I believe this is their No. 306 pattern shape. Overall height is 12 3/4" by about 5" round. The decanter is in excellent condition with no damage, chips, hairlines or scratches.

The color is beautiful! Better in real life!!

I would describe the color as greenish blue to a turquoise.