PolishedPrices.com publishes up-to-date Wholesale Diamond Prices and Diamond Indices based on actual transactions offering a transparent reality of price movements in the global diamond market. PolishedPrices Diamond Prices and Indices are also published on Bloomberg (PLPR <GO>) Reuters (<DIAMONDS/PP>) and Thomson.

PolishedPrices.com indices based on the actual transactions and the proprietary weighting system for each category is sponsored by ABN Amro bank.

Prices for single polished price points are based on actual traded selling prices, provided daily by a number of companies in the different market centres who cover a full range of activity in polished or specialisation in specific areas of polished.

Currently, PolishedPrices receives data from 20 different market players. The principal is that so long as any company can satisfy
PolishedPrices.com of the authenticity of their data and sign a contract confirming that information will be bona fide, and that it will be accepted to be part of the input for the price list. PolishedPrices sets out to be inclusive not exclusive.

As of July 2005, U2 Diamonds Ltd., owner of PolishedPrices.com, has set aside equity in the company in a scheme for companies who agree to provide data in return for shares.

For information about our data provider contracts, please contact info@PolishedPrices.com

PolishedPrices.com has launched a Benchmark price list. This list will have free access for anyone. This list at its launch was based on the peak actual prices averaged over a three month period and statistically smoothed. This bench mark price list is purely indicative.

On a weekly basis PolishedPrices will publish a Percentage movements List which will show the difference between the Benchmark price list and the weekly average of the actual transaction price list where the movements will be shown in bands. This wholesale comparison will be available only on subscription to those in the trade once the free access period for the launch is over.

The Benchmark price list will be increased or decreased automatically for each block within a size as set out in the Percentage Movements List when the average difference for the block has changed in comparison to the previous four weeks by an average of 5% or more. Where movements of prices the blocks within a size results in a clear and marked distortion between prices for that size in the Benchmark list the prices for that size will be statistically smoothed. Only prices in the Benchmark list are statistically smoothed, in the live price list all anomalies are left as is, as this is a true reflection of actual trades in the market. The intention is that changes to the Benchmark will be minimized as its sole purpose is to provide a reference point for the trade. However, there has to be a mechanism to move the Benchmark list as no movement or reflection of changes in the live prices published PolishedPrices.com would inevitably invalidate it ver time.

These additional lists are to supplement the long running actual prices available on PolishePrices.com since 2002.

Prices are displayed using two different screens (see below). The first screen shows a matrix with diamond prices that are made up of a 30-day moving average, which is soon to be changed to a 7-day moving average. If you click on a price, a second screen will appear showing the different transactions that have taken place in a specific period of time. The system shows the range of prices used to calculate the average as well as historical comparisons.

PolishedPrices is developing worldwide market prices for polished parcels prices. By definition such prices should only be used as indicative, as precise definitions of the content of individual parcels are not possible. The prices will provide useful information about price trends.
PolishedPrices reflects the contradictions and unpredictability of a true market. The range and volumes will provide the user with first-hand feedback on what is actually happening on the market. PolishedPrices whilst monitoring data provided and from time to time checking such data directly with the providers, specifically does not try to remove anomalies that may arise.

PolishedPrices views such anomalies as natural in any market and in particular in relation to a commodity which has such a vast array of price points. Therefore it is not surprising that from time to time that supposedly lower colours or qualities may appear as more expensive than a higher quality or colour. The user must look at the second screen which gives the details of the data used to make their own judgment taking into account the volume of data and the date of the last transactions.

PolishedPrices will not try to engineer what would appear a logical price progression for the prices in its matrix; it simply reflects the data that has been provided and the reality of the current situation whatever that may be. What is quite clear from the PolishedPrices is that there is no one price for any individual diamond. There is a spread of prices which with the increasing volatility in the market can vary quite dramatically.

Specifically, no one in the PolishedPrices team buys or sells rough or polished diamonds.

PolishedPrices.com is transparent and independent. Users can view the transactions used to calculate any average price.

The success of PolishedPrices.com lies in its independence in providing quality information for both news and diamond prices.
In the end, what makes us different is that we reflect the market as it is - for polished diamond prices and for keeping readers updated with key insights that will help diamond businesses in their decision making process. This is what brings together our community of readers and our team.

Listed below are the various factors used for calculations and size categories by PolishedPrices.
These factors are used to take the data from one specific price point to another. The matrix in PolishedPrices is over 1 million price points to accommodate the proliferation of factors that determine individual prices. For example, if a price is sent to us using a GIA certificate by using the factors below, which are updated from time to time, the data will be also used for the same stone but with an HRD certificate. Where on the second screen calculated prices are used, the price is shown in grey, as opposed to bold for data specific to that price point.