Petra Diamonds in Partnership Deal With Stargems on White And Blue Diamonds

342.92 carat Type IIa white diamond: Petra Diamonds

Petra Diamonds Limited has sold a 342.92 carat Type IIa white diamond and an 18.30 carat Type IIb blue diamond, both recovered at the Cullinan Diamond Mine in South Africa.

The stones have been sold into a partnership with Stargems (Pty) Ltd. Petra will receive an upfront payment of US$10.0 million for the 342.92 carat stone and US$3.5 million for the 18.30 carat stone, as well as retaining a 50% interest in the profit uplift of the polished proceeds of both diamonds, after costs.

Stargems is a Johannesburg-based subsidiary of Stargems Group, an international and vertically integrated diamond company, and is a diamond beneficiation licencee, allowing for the two diamonds to be cut and polished in South Africa.

Petra’s Chief Executive Officer Richard Duffy commented: “These two diamonds are wonderful examples of the very high quality and rare white and blue diamonds that are so well known from the Cullinan Diamond Mine. We are delighted that both stones will be manufactured in South Africa and it is fitting that we will be working with Stargems, who specialise in the sourcing and supply of the finest diamonds to customers across the world.”

Meanwhile, Shailesh Javeri, Chairman of Stargems Group, commented: “The stones will be beneficiated in South Africa at our Stargems cutting factory in Johannesburg and we look forward to working closely with Petra during the manufacturing process to reveal the eventual polished gems.”

Source: DCLA

Petra Diamonds in Partnership Deal With Stargems on White And Blue Diamonds

342.92 carat Type IIa white diamond: Petra Diamonds

Petra Diamonds Limited has sold a 342.92 carat Type IIa white diamond and an 18.30 carat Type IIb blue diamond, both recovered at the Cullinan Diamond Mine in South Africa.

The stones have been sold into a partnership with Stargems (Pty) Ltd. Petra will receive an upfront payment of US$10.0 million for the 342.92 carat stone and US$3.5 million for the 18.30 carat stone, as well as retaining a 50% interest in the profit uplift of the polished proceeds of both diamonds, after costs.

Stargems is a Johannesburg-based subsidiary of Stargems Group, an international and vertically integrated diamond company, and is a diamond beneficiation licencee, allowing for the two diamonds to be cut and polished in South Africa.

Petra’s Chief Executive Officer Richard Duffy commented: “These two diamonds are wonderful examples of the very high quality and rare white and blue diamonds that are so well known from the Cullinan Diamond Mine. We are delighted that both stones will be manufactured in South Africa and it is fitting that we will be working with Stargems, who specialise in the sourcing and supply of the finest diamonds to customers across the world.”

Meanwhile, Shailesh Javeri, Chairman of Stargems Group, commented: “The stones will be beneficiated in South Africa at our Stargems cutting factory in Johannesburg and we look forward to working closely with Petra during the manufacturing process to reveal the eventual polished gems.”

Source: DCLA

Blue diamonds may be blue because of where they are formed

Blue Diamonds are the world’s most expensive diamonds,  some stones worth tens of millions.

Why they are blue has long been know, But until now nobody has known how rare blue diamonds are made or where they come from.

Now scientists have discovered that they are formed 400 miles below the surface of the Earth, around four times the depth of cape series or white diamonds.

This is where the element boron can combine with carbon in such extreme pressure and heat that it crystallizes into the world’s most precious stone.

And because boron is mostly found on the Earth’s surface, scientists believe that it must have traveled down into the mantle when tectonic plates slipped beneath each other.

 Eventually volcanic action brought the diamonds up closer to the surface.

Blue Diamond is categorized as type IIb crystal and due to their extreme valuable, it is very rare to find one for scientific research purposes. An rare to find one that contains inclusions.

Source: DCLA

Blue diamonds may be blue because of where they are formed

Blue Diamonds are the world’s most expensive diamonds,  some stones worth tens of millions.

Why they are blue has long been know, But until now nobody has known how rare blue diamonds are made or where they come from.

Now scientists have discovered that they are formed 400 miles below the surface of the Earth, around four times the depth of cape series or white diamonds.

This is where the element boron can combine with carbon in such extreme pressure and heat that it crystallizes into the world’s most precious stone.

And because boron is mostly found on the Earth’s surface, scientists believe that it must have traveled down into the mantle when tectonic plates slipped beneath each other.

 Eventually volcanic action brought the diamonds up closer to the surface.

Blue Diamond is categorized as type IIb crystal and due to their extreme valuable, it is very rare to find one for scientific research purposes. An rare to find one that contains inclusions.

Source: DCLA