Winnipeg Jeweller Announces Acquisition Of Teal Sapphires WINNIPEG, MB: Omori Diamonds, a Winnipeg jeweller specializing in custom jewellery design and engagement rings, has announced its acquisition of a number of teal sapphires. Teal sapphires are a rare gemstone, related to the more commonly known blue sapphire. They feature a blend of deep ocean blues and vivid greens, thanks to a mix of aluminum oxide, iron, and titanium.