Archive for October, 2008

Virtual Diamonds

Friday, October 31st, 2008

With the proliferation of diamond and jewellery websites recently in New Zealand and offshore there has been an increase in the use of virtual diamond inventory. This is the ability of internet based operations to link back to offshore diamond portals and list the corresponding diamond stock on their websites. A margin is then added to these diamonds. Many of these websites are being run by IT people with no prior experience in the diamond or jewellery industry. They see it as an ideal product to be sold on the internet as it is of high value, small and easily shipped to consumers.

This is why you see New Zealand and offshore websites purporting to have a stock or 30,000 or 40,000 diamonds when in fact they don’t own any of the diamonds. This is very unprofessional as this stock is from multiple suppliers and countries and the Jeweller has not seen the diamond and can make no comment on the actual diamond being quoted.

Professional Jewellers would never buy a diamond that they have not had the chance to view before buying. This is because Jewellers know that there are a large number of variables that make up a diamonds quality that are not recorded on a diamond grading report and that diamond grading reports are not all equal. The analogy is that you would not buy a house from the road – you would want to go inside and view the layout, quality of the build and finish etc. This is the same with a diamond. All diamonds listed on www.diamonds.co.nz are owned by us and along with our De Beers DTC Sightholder have looked at each diamond at least six times during its cutting process, grading process and final purchase. We know exactly what each diamond is and where we feel it is in the grading system. We have been buying diamonds for the New Zealand jewellery industry for 25 years.

Diamond Clarity Enhancement

Friday, October 31st, 2008

Diamond clarity enhancement is a process to improve the clarity of a diamond by the use of a foreign material, normally a type of glass, being forced under pressure into open fissures, cracks and other surface reaching characteristics on the surface of a polished diamond. 

Diamonds listed on www.diamonds.co.nz are not clarity enhanced and we would never supply these diamonds to our clients.

Our main area of concern is that they are actually not what they appear as the process can improve the clarity and appearance of the diamond by a number of clarity grades. Yes, the majority of clarity enhanced diamonds are disclosed when initially sold but with any further sales this disclosure can get lost.

Also there is a considerable risk in damaging the diamond and returning it to its original clarity while under repair, as the majority of clarity enhanced diamonds cannot withstand the heat of a jeweller’s torch.

Diamond Clarity

Wednesday, October 1st, 2008

All diamonds are graded for Clarity; this is another component that makes up the 4C’s which determines each diamonds value (price). Clarity is a diamonds freedom from clarity characteristics, which are classified in two parts –Inclusions and Blemishes.

Inclusions are enclosed within a diamond, or they extend into the diamond from its surface. Blemishes are confined to the diamonds surface. Inclusions generally have more influence on a diamonds clarity grade than blemishes.

The clarity characteristics found in a diamond make it unique. It is very unlikely that two diamonds would have the same clarity characteristics in exactly the same position.  

When grading diamonds, a clarity grading scale is used. The scale provides a universal method for describing a diamonds clarity. The scale consists of 11 clarity grades.

Clarity Scale

     

 

     

Flawless

     

 

     

Internally

     

Flawless

     

 

Very very slightly included

VVS1

     

 

     

VVS2

     

 

Very slightly included

VS1

     

 

     

VS2

     

 

Slightly included

 

SI1

     

 

     

SI2

     

 

     

I1

     

 

     

I2

     

 

     

I3

     

 

Diamonds form under tremendous heat and pressure; it is extremely rare to find a diamond that does not contain any internal and external clarity characteristics. Clarity characteristics are caused by the diamonds formation and help Gemologists separate natural diamonds from synthetics and simulants, and identify individual stones.