Tag: fluorescence

• Evaluation Mahenge spinel Mayer & Watt

  Evaluating a Neon Pink Red Mahenge Spinel

  This week’s blog is an evaluation of a 3.21ct Mahenge spinel that I did for a client recently.  The stone was brought in from Mayer & Watt, a wholesale dealer where the advertised MSRP is $5,256/carat. The following is a direct copy and paste of my email. Color: It is…

  September 26, 2016
• Precision Cutting Ruby Spinel

  Red Spinel

  So I’ve posted some (a lot) of pictures and several blog posts on red spinel, and even have some running as banners along the top of my blog. Spinel is one of my favorite gemstones, mostly because it produces the best gray color, but also because it has an almost…

  March 16, 2015