Ehud Arye Laniado - global diamond expert
Change in diamond indices for the previous month
  1. 0.30-0.39 Carat Rounds D-M IF-SI213.48-0.36 (-2.6%) 0.30-0.39 Carat Semi Rounds D-M IF-SI29.44-0.20 (-2.1%) 0.30-0.39 Carat Squares D-M IF-SI28.190.03 (0.4%) 0.50-0.69 Carat Rounds D-M IF-SI220.31-0.44 (-2.1%) 0.50-0.69 Carat Semi Rounds D-M IF-SI215.06-0.20 (-1.3%) 0.50-0.69 Carat Squares D-M IF-SI213.690.17 (1.3%) 0.70-0.89 Carat Rounds D-M IF-SI227.21-0.49 (-1.8%) 0.70-0.89 Carat Semi Rounds D-M IF-SI220.66-0.21 (-1.0%) 0.70-0.89 Carat Squares D-M IF-SI217.54-0.16 (-0.9%) 1.00-1.49 Carat Rounds D-M IF-SI251.71-0.22 (-0.4%) 1.00-1.49 Carat Semi Rounds D-M IF-SI234.46-0.24 (-0.7%) 1.00-1.49 Carat Squares D-M IF-SI226.99-0.15 (-0.6%) 1.50-1.99 Carat Rounds D-M IF-SI263.931.02 (1.6%) 1.50-1.99 Carat Semi Rounds D-M IF-SI249.97-0.73 (-1.4%) 1.50-1.99 Carat Squares D-M IF-SI245.20-0.41 (-0.9%) 2.00-2.99 Carat Rounds D-M IF-SI290.80-0.66 (-0.7%) 2.00-2.99 Carat Semi Rounds D-M IF-SI268.430.16 (0.2%) 2.00-2.99 Carat Squares D-M IF-SI260.860.96 (1.6%) 3.00-3.99 Carat Rounds D-M IF-SI2139.79-1.64 (-1.2%) 3.00-3.99 Carat Semi Rounds D-M IF-SI2102.19-2.98 (-2.8%) 3.00-3.99 Carat Squares D-M IF-SI289.30-2.04 (-2.2%) 5.00-5.99 Carat Rounds D-M IF-SI2229.400.60 (0.3%) 5.00-5.99 Carat Semi Rounds D-M IF-SI2185.03-1.60 (-0.9%) 5.00-5.99 Carat Squares D-M IF-SI2155.77-0.73 (-0.5%) 10.00-14.99 Carat Rounds D-M IF-SI2389.73-6.83 (-1.7%) 10.00-14.99 Carat Semi Rounds D-M IF-SI2334.21-6.55 (-1.9%) 10.00-14.99 Carat Squares D-M IF-SI2334.17-7.33 (-2.1%) 20.00-29.99 Carat Rounds D-M IF-SI2551.66-9.95 (-1.8%) 20.00-29.99 Carat Semi Rounds D-M IF-SI2450.64-9.23 (-2.0%) 20.00-29.99 Carat Squares D-M IF-SI2450.64-9.20 (-2.0%)

LATEST NEWS

Diamond Portraits: G. Robert Crowningshield

George Robert Crowningshield may not be a household name to many in the diamond industry, however he is responsible for a number of important discoveries that impact nearly everyone in the trade. Key among them were techniques in detecting diamond fraud. He was also instrumental in establishing what are known as the 4Cs.

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Ehud Arye Laniado

Follow all the latest diamond news, views, events, endorsements and more from Ehud Arye Laniado

Ehud Arye Laniado

Ehud Arye Laniado

Diamond industrialist Ehud Arye Laniado is a man passionate about diamonds. From his early 20s in Africa and later in Belgium honing his expertise in forecasting the value of polished diamonds by examining rough diamonds by hand, till today four decades later, as chairman of his international diamond businesses spanning mining, exploration, rough and polished diamond valuation, trading, manufacturing, retail and consultancy services, Laniado has mastered both the miniscule details of evaluating and pricing individual rough diamonds and the entire structure of the diamond industry. Today, his global operations are at the forefront of the industry, recognised in diamond capitals from Mumbai to Tel Aviv and Hong Kong to New York.

George Robert Crowningshield may not be a household name to many in the diamond industry, however he is responsible for a number of important discoveries that impact nearly everyone in the trade. Key among them were techniques in detecting diamond fraud. He was also instrumental in establishing what are known as the 4Cs.

Polished diamond prices declined sharply in September, eroding all the gains made during the year. The Mercury Diamond Global Tracker™ averaged 111.74 in September 2018, down 1.85% over August. This is the deepest monthly price decline since May 2015, when prices plunged more than 4%. Polished diamond trade was very limited during the month due to a series of Jewish and Hindu holidays.

We have written about the Jonker diamond and some of its history a number of times. Yet parts of the story of this diamond were virtually never discussed. The 726-carat Jonker Diamond was reportedly found in South Africa on January 17, 1934 by Johannes Jacobus Jonker. One of the biggest rough diamonds ever discovered, it was originally sold for £75,000.

Demand for polished diamonds in September softened overall. A combination of holidays and a trade show in Hong Kong, a city that was hit by massive typhoons, slowed down activity in the market. With a cyclical decline in retail activity among jewelry retailers, the good demand seen in August has declined too.

In the modern diamond industry, there are several functions that go beyond diamond exploration, mining, polishing, wholesaling and retailing. Among them are financing, grading and marketing. Two additional areas in the industry are rough brokering and trade press coverage. The first, brokers, serve an interesting role. Rough diamond brokers have historically served as go-betweens between diamond mining giant De Beers and its select group of clients.

Mercury Polished Graph Tool

Mercury Polished Graph Tool

Mercury Diamond Global Price Tracker™

Mercury Diamond Global Price Tracker™
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