Tag: Mark T. Cartwright

The art of self-defence: Disclosures, disclaimers, and delusions

October 1, 2014

For more than two decades, I was a practitioner of the Japanese martial art of Aikido. The style I practiced was focused primarily on the purely defensive and harmonious blending of the 'attack' and 'response' energies. Most of the appraisers I know also practice some form of self-defence, at least in their appraisals.

Crossed polarizers: The value of simple instruments

August 1, 2014

In a previous issue of Jewellery Business, I introduced readers to a few of my favourite tools and briefly described some of their uses. Perhaps it's a good time to provide a bit more detail and delve into specific techniques and how the information they provide can help us do our jobs more efficiently.

Provenance as a value element

July 1, 2014

Provenance—as defined as the association of an item to a renowned designer, maker, or even a famous owner—can have a significant influence on value"¦ sometimes.

Seeing red (and blue and green): Colour perception and light(ing)

May 1, 2014

The vivid yellow of this diamond is only in your mind...literally. Colours are a significant part of our experience as humans and a huge part of what we do as professional gemmologists and appraisers.

A few of my favourite things: Tools that may make your job easier

February 1, 2014

Every professional has tools and techniques they consider indispensable to their trade. The world of gemmology and jewellery appraisal is somewhat unique in that many of us are left to figure these out for ourselves.

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Others

Tag: Mark T. Cartwright

A stroll down memory lane: Changing times, new challenges

The art of self-defence: Disclosures, disclaimers, and delusions

Crossed polarizers: The value of simple instruments

Provenance as a value element

Seeing red (and blue and green): Colour perception and light(ing)

A few of my favourite things: Tools that may make your job easier

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Tag: Mark T. Cartwright

A stroll down memory lane: Changing times, new challenges

The art of self-defence: Disclosures, disclaimers, and delusions

Crossed polarizers: The value of simple instruments

Provenance as a value element

Seeing red (and blue and green): Colour perception and light(ing)

A few of my favourite things: Tools that may make your job easier

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Popular Articles

Read the Latest Issue