Diamonds across time

Not so long ago, the global library of professional publications on precious stones was replenished with a unique book about rare diamonds and diamond jewelry published by the World Diamond Museum. Alex Popov, the founder and director of the museum told...


Academician Pokhilenko: The situation with rough diamonds in the Russian Federation will start changing for the worse as early as 2025

Nikolai Petrovich Pokhilenko, Academician of the Russian Academy of Sciences (RAS), Deputy Chairman of the Siberian Branch (SB) of the RAS, Scientific Director of the Institute of Geology and Mineralogy of the SB of the RAS, is a prominent...

11 january 2021

Ilgiz Fazulzyanov: For a creator, the quarantine is the time to work on future masterpieces

Ilgiz Fazulzyanov is a successful and internationally recognized jewellery designer. He received his academic art education in Kazan and moved to Moscow in the 1990s where he lives and works now. His brand, Ilgiz F., is well known among true connoisseurs...

04 january 2021

Botswana Diamonds keen to mine KX36 kimberlite if found commercial

Botswana Diamonds intends to mine the KX36 kimberlite, which it recently acquired from Petra Diamonds if found commercial. The high-grade KX36 kimberlite pipe is part of the three Prospecting Licenses in the Central Kalahari Game Reserve in Botswana...

28 december 2020

‘We expect to completely open the Bourse for business by Q1 of the Year 2022,’ assures Vallabhbhai Patel, Chairman, SDB

Vallabhbhai Patel, Chairman of the Surat Diamond Bourse, dreamed of building the world’s largest commercial building in Surat for the Indian diamond industry. He conceptualized the ‘Surat Diamond Bourse’ (SDB), which is set to redefine...

21 december 2020

Lucapa recovers rare type IIa diamonds from Lulo kimberlite exploration

26 february 2020

Lucapa Diamond, which recently recovered 45 diamonds weighing 30.3 carats from a stream bulk sample taken from the Canguige tributary, in Angola, has confirmed the presence of rare Type IIa gems, along with a light fancy yellow. 
This follows a follow-up analysis on a Yehuda colorimeter post acidizing or deep boiling of the Canguige tributary diamonds. 
The tributary was previously known for hosting a “good” white population – including top D-colour stones. 
Lucara and its partners are planning to send the diamonds to Antwerp for more detailed analysis with specialised equipment.  

Image credit: Lucapa Diamond

The Canguige tributary drains into the Cacuilo River valley about 3km upstream of alluvial Mining Block 46 at the Lulo project, which has produced multiple high-value Type IIa diamonds including specials of up to 88 carats, along with fancy pink and yellow diamonds.
As set out in the ASX announcement of 19 February 2020, drilling has commenced to test five pipes in the Canguige catchment rated in a technical review as being among the most prospective to host diamonds within the Lulo kimberlite field.
Two priority anomalies in the Canguige catchment will also be drilled to confirm the presence of kimberlite, said Lucapa.

Mathew Nyaungwa, Editor in Chief of the African Bureau, Rough&Polished