Browsing Archive: July, 2018

FaceTips for August

Posted by Site Moderator Webmaster on Wednesday, July 25, 2018, In : Faceting 

By Duncan Miller

Jewellers sometimes ask for the impossible, and it’s a challenge to try and oblige. This design was developed to cut the citrine for a dome-shaped ring. It had to be a ‘classical’ mixed cut with curved girdle lines to match the curve of the top of the ring. This design requires a preform to get the girdle facets the right size. The relative depth of the pavilion tiers affects the angles of the triangular corner facets, but these can b...


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Southern African Lapidary Stones to watch out for:

Posted by Site Moderator Webmaster on Wednesday, July 25, 2018, In : Lapidary 


SODALITE – this is generally sourced from Swartbooisdrif, near the Kunene River in north-west Namibia. It has a Mohs hardness of between 5,5–6, is generally fine grained, and works very well.

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Encouraging the Curiosity of the Next Generation

Posted by Site Moderator Webmaster on Wednesday, July 25, 2018,

Matt Lurie (5 years old), who lives in Johannesburg, was curious as to the make-up of an (amethyst) Spirit quartz crystal so he bought one for R10 in Johannesburg and de-jacketed/exfoliated/peeled it, to satisfy his curiosity! The images below were taken by his dad (Robert’s son) Dan Lurie.

   


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