Negative Space Montana Sapphire. Stunning brilliant round blue Montana sapphire measuring in at 4mm and a carat weight of .50. Created in 14K yellow gold and sized in at 7 1/2. This ring is elegant and perfect for everyday wear with a very open to feel. Sapphires are a very durable stone that wears well. This sapphire ring has a elegant feel while being built strong enough for years of wear. This would make a wonderful promise ring if you’re in the market for that. We know you’ll love this dazzling ring. Can resize for an additional charge.