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Figure 1. (left) Inclusion consisting of a liquid phase with a vapour bubble. Figure 2. (right) Polariscope-revealed inclusion

Gem of the Month
Understanding inclusions: part 5 tourmaline

Always colourful, always durable; tourmaline is a jewellery-industry favourite. JUNE MACKENZIE reports. Read more >>
Figure 1. (left) Corrosion tubes. Figure 2. (right) Lamellar twinning

Gemstones
Understanding inclusions: part 4 tanzanite

Compared to other gemstones, tanzanite is young. JUNE MACKENZIE discusses this popular gemstone that Tiffany & Co brought to market in the 1960s. Read more >>
Figure 1 (left). Synthetic flux emerald. Figure 2 (centre). Hydrothermal emerald. Figure 3 (right). Natural emerald

Gemstones
Understanding inclusions: part 3 emerald

Understanding emerald inclusions is a vital part of the sales process. JUNE MACKENZIE reports. Read more >>
Figure 1. Natural, BeHT sapphire.  Figure 2. Synthetic, flame fusion sapphire

Gemstones
Understanding inclusions: part 2 sapphire

Inclusions are an integral part of identifying any range of treatments that can be applied to gemstones to boost value. JUNE MACKENZIE reports. Read more >>
Figure 1. Natural ruby. Figure 2. Heat-treated ruby

Gemstones
Understanding inclusions: Part 1 ruby

Inclusions are a gemmologist’s best friend. Why? Well, inclusions can determine whether a gemstone is natural, natural but treated for enhancement purposes, synthetic or man-made. JUNE MACKENZIE reports. Read more >>
Image courtesy: The French Jewel Box

Gemstones
Art nouveau jewellery: exploring the legacy

Art Nouveau dominated jewellery design for only two or three decades up to World War 1 yet left a memorable legacy not only in the pieces that remain but also in the design and manufacture techniques it inspired. KATHRYN WYATT reports. Read more >>

Gemstones
The flourish of art deco

Art Deco remains a popular style not just for engagement rings but also for other jewellery items. KATHRYN WYATT expands on her previous column by delving deeper into the Art Deco movement. Read more >>

Gemstones
The decadence of art deco

Through the ages, gemmology and jewellery have both been heavily impacted by global societal trends. KATHRYN WYATT looks back at the defining Art Deco movement. Read more >>

Gemstones
Understanding gemstone wear and tear

It may seem elementary but knowledge of correct gemstone treatment is essential for new retail staff. IAN DUN discusses types of gemstone damage and how to avoid them. Read more >>

Gemstones
Developing a gemstone repair plan

Jewellers are often required to repair pieces that are essentially of unknown quality, making a thorough investigation and plan prior to commencement of work paramount. IAN DUN reports. Read more >>

Gemstones
Repair tips for gem-set jewellery

An important skill for any bench jeweller is knowing how to minimise the risk of damage when working with gem-set jewellery. IAN DUN offers advice for managing gemstones in the workshop. Read more >>
Image courtesy: Brendan Mccreesh, O’Neils Affiliated

Gemstones
Romancing the stone: Ultrasonic and Gemstones

The ultrasonic cleaner is an essential piece of equipment in a bench jeweller’s workshop. MEGAN AUSTIN lists basic guidelines and discusses the suitability of various gemstones for the cleaner. Read more >>

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Tuesday, 30 May, 2017 05:24pm
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