Gemstones in Nigeria: Sapphire, Tourmaline and Their Value Explained

Nigeria is a recognised source of coloured gemstones — sapphire, tourmaline, aquamarine, garnet and topaz among them. Unlike bulk minerals, gemstone value turns on quality and rarity rather than tonnage, but the sale is still made in dollars, which is why it belongs in the same conversation as our commodity prices.

What sets the value

• Colour and clarity — the biggest drivers of price per carat.
• Cut and carat — faceting and size.
• Certification — independent grading lifts buyer confidence.

Why prices are in dollars

The international gem trade prices in dollars, so a Nigerian seller’s naira proceeds depend on the exchange rate as much as the stone’s grade. In that sense gemstones share the export economics of gold and coltan — high-value, dollar-settled, and feeding hard-currency earnings.