Crystallex Reports Grades of Principal Mineralized Intervals From the Conductora Zone, Las Cristinas, From the 2006-2007 Drill Program

06/22/2007

TORONTO, ONTARIO -- (MARKETWIRE) -- 06/22/07 -- Crystallex International Corporation (TSX: KRY)(AMEX: KRY) today reported summary assay results from the second of two zones drilled at Las Cristinas in a 13,566 metre program which commenced on November 1st, 2006 and was completed on February 14th, 2007. The first tranche of results from the 06-07 drill program, from the Morrocoy zone, was press released on May 1st, 2007. The Morrocoy target lies outside of the two planned open pits at Las Cristinas in an area in which gold-mineralized intervals intersected in previous drilling were considered to lack the continuity required for incorporation into the Inferred resource. The second tranche of results reported here, is from 8,421 metres drilled in 23 bore holes located in the Conductora area of the Las Cristinas deposit.

Results for the principal mineralized intervals intersected in the Conductora area are summarized in Table 1 (below). The location of the 06-07 bore holes are shown on a map of gold grade - thickness for the Las Cristinas property in Figure 1 (http://www.ccnmatthews.com/docs/kryfig1.pdf). The updated gold grade-thickness diagram that includes the results from the 06-07 drill program is shown in Figure 2 (http://www.ccnmatthews.com/docs/kryfig2.pdf) for comparison.

Richard Spencer, Crystallex's VP Exploration commented, "Apart from demonstrating down-dip continuity of mineralization at Conductora, the 06-07 drill program has clarified two other important aspects of the Las Cristinas deposit. Firstly, it has demonstrated continuity of mineralization through the gap between the planned pits at Conductora and Mesones-Sofia and secondly, it has shown that the Morrocoy zone is a fault-displaced extension of the Conductora mineralization. This suggests that the Morrocoy zone is an extension of the principal deposit at Las Cristinas."

Due to backlogs at the assay laboratories and the extended time taken for the receipt of assay results, the updated resource estimate is now expected from Mine Development Associates ("MDA") of Reno, Nevada, early in the third quarter. MDA's updated reserve estimate for Las Cristinas, based on a new pit design and current operating cost parameters, is now expected by the middle of the third quarter.

Drilling was conducted by Majortec of Moncton, New Brunswick. The program was managed by Mr. Gustavo Rodriguez (M.Sc), Chief Geologist - Las Cristinas, under the direction of Dr. Richard Spencer (P.Geo), Crystallex's VP Exploration, who is a Qualified Person for the purposes of National Instrument 43-101 -Standards of Disclosure for Mineral Projects. Quality Assurance and Quality Control (QAQC) procedures were managed by an external consultant, Mr. Trevor Nicholson (B.Sc. Chem.) of Nicholson Analytical Consulting (NAC) of Comox, British Columbia, who is an Assay Chemist by training. NAC reviewed the proposed QAQC procedures prior to drill start-up and subsequently audited field procedures. Mr. Nicholson was on site for about 40% of the duration of the program. Mr. Steven Ristorcelli, of MDA, undertook an on-site audit of logging, sampling and QAQC procedures during the drill program.

Table 1 - Summary assay results for the principal mineralized intervals
intersected in the 23 bore holes drilled in the Conductora area of the Las
Cristinas deposit in the 2006-2007 drill program.

-------------------------------------------------------------
                        Mineralized zone
                      -------------------------
          From    To  Down-hole Estimated true    Gold grade
BH#         (m)   (m)  width (m)      width (m)         (g/t)
-------------------------------------------------------------
-------------------------------------------------------------
           101   130         29             28          1.24
          ---------------------------------------------------
K6CO1162   203   253         50             49          1.00
          ---------------------------------------------------
           287   307         20             20          1.51
-------------------------------------------------------------
-------------------------------------------------------------
K6CO1163   199   221         22             21          1.79
-------------------------------------------------------------
-------------------------------------------------------------
K6CO1164   209   288         79             73          0.86
-------------------------------------------------------------
-------------------------------------------------------------
K6CO1184   191   318        127            123          0.89
          ---------------------------------------------------
           342   368         26             25          0.97
-------------------------------------------------------------
-------------------------------------------------------------
            82   106         24             24          0.91
          ---------------------------------------------------
K6CO1185   195   227         32             31          0.78
          ---------------------------------------------------
           321   451        130            127          1.33
-------------------------------------------------------------
-------------------------------------------------------------
           120   156         36             35          0.85
          ---------------------------------------------------
K6CO1186   186   232         46             44          0.72
          ---------------------------------------------------
           338   422         84             81          1.46
-------------------------------------------------------------
-------------------------------------------------------------
K6CO1187   280   362         82             80          0.80
-------------------------------------------------------------
-------------------------------------------------------------
K6CO1188  No significant results - bore hole abandoned due
           to technical problems, redrilled as hole K7CO1190
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1190   170   229         59             55          1.32
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1192   162   235         73             72          1.04
          ---------------------------------------------------
           269   300         31             30          0.61
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1194   128   245        117            110          1.11
          ---------------------------------------------------
           265   311         46             43          0.61
-------------------------------------------------------------
-------------------------------------------------------------
             0  15.5       15.5             15          2.46
          ---------------------------------------------------
K7MO1196  33.5   134      100.5             98          0.97
          ---------------------------------------------------
           149   217         68             67          1.08
-------------------------------------------------------------
-------------------------------------------------------------
           189   283         94             87          0.62
          ---------------------------------------------------
K7CO1197   316   364         48             45          0.57
          ---------------------------------------------------
           375   470         95             88          1.47
-------------------------------------------------------------
-------------------------------------------------------------
K7MO1198  36.5   145      108.5            102          1.23
          ---------------------------------------------------
           170   211         41             39          0.65
-------------------------------------------------------------
-------------------------------------------------------------
             0  12.5       12.5             11          1.79
          ---------------------------------------------------
K7CO1199   225   334        109             99          0.72
          ---------------------------------------------------
           387   482         95             86          1.33
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1200    32   140        108            105          1.12
          ---------------------------------------------------
           233   278         45             44          0.59
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1201  No significant intersections
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1202   286   501        215            187          1.68
          ---------------------------------------------------
             0    17         17             13          1.62
          ---------------------------------------------------
K7MO1203    28    68         40             31          0.82
          ---------------------------------------------------
           116   161         45             35          0.87
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1204   280   387        107            101          1.11
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1205   366   484        118            103          1.62
-------------------------------------------------------------

-------------------------------------------------------------
K7CO1206   407   529        122            120          1.15
-------------------------------------------------------------
-------------------------------------------------------------
K7CO1207   146   178         32             29          0.66
          ---------------------------------------------------
           229   319         90             82          1.10
-------------------------------------------------------------
-------------------------------------------------------------

Certified standards were inserted at an average of one per 20 samples, field blanks at one per 30 samples, while both ten mesh and quarter-core duplicates were inserted at intervals of approximately 50 samples. Duplicates of pulps were taken at intervals of approximately 1 in 60 samples for assay by a second, independent laboratory. The core samples were prepared by Societe Generale de Surveillance ("SGS") at their facility in El Dorado, Venezuela and analysis of the samples was done by SGS in Lima, Peru. Assay results were reported to NAC who communicated directly with personnel at SGS in Lima regarding assays that initially failed QAQC. Once the reassay results had met the QAQC requirements, NAC forwarded the QAQC-compliant data to Crystallex for incorporation into its database and for the calculation of the intervals reported here.

Crystallex reported on June 14th, 2007, that it has posted the Compliance Guarantee Bond and Environmental Taxes required by the Ministry of the Environment and Natural Resources of Venezuela ("MinAmb") for the Las Cristinas gold project. The MinAmb has notified the Corporacion Venezolana de Guayana ("CVG"), who holds title to the concessions that constitute the Las Cristinas deposit, that the Environmental Impact Study has been approved and that the environmental permit will be issued. The environmental permit covers the construction phase at Las Cristinas.