There is common misconception that a diamond exhibiting fluorescence under ultra violet light has some kind of colour defect or transparency issue.
This NOT true at all. The naturally occurring fluorescence phenomenon is a unique completely hidden feature, which is present to some level in approximately 30% of all diamonds.
The effect is seen in Diamonds which have Carbon bonds which include boron.
Boron causes the diamond to glow when held under a powerful ultra violet light also known as blacklight.
The amount of boron in the Carbon bond making up the diamond will determine the level of fluorescence. Fluorescence is rated by the Laboratory as Very Strong, Strong, Medium, Faint, None. This relates to the strength of the fluorescent glow under ultra violet light.
Laboratories use fluorescence as a means of identifying the diamond along with many other characteristics found in natural diamonds.
May Jewellers and consumers have been led to believe that fluorescence in diamonds will negatively affect the colour or transparency.
Again this is NOT true. Fluorescence has a tendency to make the middle to lower colour diamonds in the colour chart look whiter than the same colour would with no fluorescence. More obvious when viewing the diamond from the table view or top.
Therefore fluorescence has very little, to no negative effect on the diamonds colour or transparency. Diamonds are more likely affected by heavy graining or microscopic clouds.
This is good for the buyer as misinformation has caused consumers to be wary of a UV responsive or fluorescence diamond. This has caused diamond dealers and jewellers to discount these diamonds based on the level of fluorescence in the diamond the same colour and clarity.
Conclusion: save some money and take advantage of the lack of knowledge in the market.
Production will cease at the De Beers Victor mine in Canada in 2019, the company announced Wednesday.
The Diamond Mine in Ontario started production in July 2008 will continue to operate until the open pit is exhausted. This is in line with the company’s original study of mine and the plan for the project.
The mine has yielded 7 million carats of rough exceeding the forecast of 6 million carats predicted for its life of mine.
De Beers discovered the Victor kimberlite cluster in 1987 the first economically viable mine in Canada.
An Oval Cut Fancy Vivid Pink Diamond goes under the hammer at the Christie’s Magnificent Jewels sale this month.
The 14.93 carat Type IIa VVS1 clarity Oval Diamond, named the Pink Promise is estimated to sell for between $28 million to $42 million USD.
Due to resources dwindling Beers’ joint ventures will close four diamond mines by 2022.
Namdeb is a DeBeers project with the government of Namibia, Will close the Elizabeth Bay mine at the end of 2018 followed by the Daberas deposit at the end of 2019 and Sendelingsdrif in 2020. The main asset Southern Coastal will close in 2022.
Production saw a shift to offshore assets this past year. For the first nine months of 2017, Debmarine’s production surged 22% to 1.1 million carats.
Subdued world economic growth will make the next few years challenging, mainly due to negative impacts forecast in exchange rates and other indices.
A 34.17 carat Fancy Vivid Yellow Rough Diamond was recovered by Almazy Anabara a mining company affiliate of Alrosa.
This is the Alrosa diamond mines largest fancy colored rough this year.
The diamond was found at its Ebelyakh alluvial mining deposit in the remote region of Yakutia in northeastern Russia.
The Vivid Yellow Diamond will be sent to Alrosa in Moscow at the end of the month for a detailed assessment, but the company said it is a transparent intense yellow crystal with a minor inclusion.
This year Almazy Anabara recovered a 27.85 carat pink diamond the largest pink stone in Alrosa’s history.
The historic emerald cut diamond could sell for more than $30 million USD when it goes on sale at Christie’s Geneva Auction next month.
The 163 carat D flawless diamond named The Art of De Grisogono, was shown at the Dubai Diamond Conference on Tuesday.
Initially in set in an necklace now as the centerpiece of a bracelet.
The polished diamond originated from a 404 carat rough diamond recovered at the Lulo mine in Angola Southern Africa.
The new Premier models in mother of pearl have extraordinary show of depth.
The Premier Collection was the first watch collection introduced by Harry Winston in 1989, The collection captures the pioneering spirit of Harry Winston.
With the Automatic 36 mm Harry Winston has embraced the theme of nature. The Caliber HW 2014, which provides a power reserve of 72 hours.
De Beers’ October sight closed with a value of $370 million as rough-diamond buying slowed due to holidays and sightholders reported a sluggish dealer market.
Proceeds from the miner’s eighth sales cycle fell 27% from $507 million in the previous sight in August, and dropped 25% compared with the equivalent period a year ago, according to Rapaport records. Rough prices were largely unchanged from the previous sight, sightholders noted, with many dealers on the secondary market struggling to make a profit on the goods or even cover costs.
De Beers offered fewer rough diamonds for sale during the month as last week’s sight occurred during a period when polishing factories in India and Israel were closed for religious holidays, the company’s CEO Bruce Cleaver explained Tuesday.
“Sales were in line with expectations, at what is a seasonally slower time for rough-diamond demand,” Cleaver added.
The Indian cutting industry is preparing to close for Diwali, which occurs this Thursday. Buyers brought rough purchases forward to the July sales cycle because of the relatively early date of the festival this year, De Beers noted at previous sights. The last two sights have both been significantly smaller than a year ago as a result.
Sightholders were optimistic about the end-of-year holiday season, even as De Beers’ rough sales have declined 7% to $4.38 billion for the year to date, Rapaport records show. Russian miner Alrosa echoed this positive outlook, also noting that the timing of Diwali had weakened sales in September.
“We expect the traditional revival of the market situation in the fourth quarter, as the industry starts to prepare for the winter holiday season,” Alrosa vice president Yury Okoyomov said last week.
Source: diamonds.net
Happy Diwali From the team at the DCLA.
Rapaport Group has been appointed as the marketing and sales agent of the Peace Diamond by The Government of Sierra Leone.
The 709 carat Rough Diamond was recovered by diamond diggers in the village of Koryardu in Sierra Leone West Africa.
50% of the Peace Diamond sale value will directly go to benefit the community where the diamond was discovered, and the people of Sierra Leone.
