TIDMTNZ 
 
RNS Number : 6018N 
Tanzanite One Limited 
15 June 2010 
 

                              TanzaniteOne Limited 
                  ("TanzaniteOne" or "the Company") (AIM: TNZ) 
 
                           Sales and Marketing Update 
 
TanzaniteOne Limited ("TanzaniteOne" or "the Company") (AIM: TNZ), the gemstones 
producer and developer, today announces its second unaudited sales update for 
the year. 
 
Highlights 
 
·     Second official sale of 2010 resulted in a revenue of US$ 2.01 million 
 
o  US$ 5.44 million in sales to date in 2010 
 
·     Average overall quality weighted price increase of 4.5% per carat price 
since previous sight (March 2010) 
 
·     366,108 carats of rough tanzanite was sold at an average of US$5.5/carat 
 
·     Conversion of GRAFGEM MoU to joint venture ("JV") agreement 
 
o  enables expansion of Tanzanian cutting and polishing facility 
 
Sales 
 
The second formal modified "sight" sale for 2010 was conducted from 19 to 21 May 
2010 in Dubai. Revenue from sales of US$2.01 million was achieved at the sight 
from the sale of 366,108 carats of rough tanzanite, at an average of US$5.5 per 
carat. All rough tanzanite presented at the Dubai sale was sold and the price 
achieved ranged from $1.70/ carat to $110/ carat. The bulk of the material sold 
by weight was from the BL(i) category resulting in the larger amount of carats 
sold, but lower average price achieved compared with the March sight (see the 
grading and classification system in the notes to editor section). 
 
An average overall quality weighted price increase of 4.5% was achieved at the 
Dubai sale, relative to the previous sight conducted in Hong Kong in March 2010. 
The indicated demand for the product is currently still exceeding supply, 
signalling a continuation of the strengthening in the tanzanite gemstone market. 
 
The third official sight-sale for the year is scheduled for the last week in 
June 2010 in Dubai. 
 
GRAFGEM Joint Venture 
 
TanzaniteOne and GRAFGEM have successfully converted the Memorandum of 
Understanding, entered into by the two parties in September 2009 into a formal 
JV agreement.  The JV has been established to create a globally unique cutting 
and distribution collaboration enabling full control from the mine to the final 
cut product for tracing and ethical compliance. Grading will be done according 
the Tanzanite Quality ScaleTM and the precision through the ExcellentCut label. 
 
GRAFGEM has developed and established its own unique cutting techniques and 
methods meeting the highest standards and qualities of the worldwide gemstone 
industry. ExcellentCut is a label for a concept created by GRAFGEM. It ensures 
absolute precision cut, perfect sorting and quality check of color gemstones, 
all processed in house by fully respecting ethical and environmental aspects. 
The sort of cuts and cutting procedures, techniques and equipments are developed 
and tested as prototypes by the expert staff of GRAFGEM in Switzerland. They are 
implemented and exclusively applied in GRAFGEM's own cutting facility for serial 
production. For more information on GRAFGEM please follow the GRAFGEM 
ExcellentCut link located on the Company's website, www.tanzaniteone.com 
 
Commenting today Bernard Olivier, Chief Executive Director, said: "We are 
encouraged by the continued increasing demand for tanzanite gemstones and an 
increase of 4.5% of the weighted average carat price over the 2 month period 
from the March sight is testament to this demand. We continue to build our 
precision cutting and marketing arm with a joint venture with GRAFGEM. The 
agreement will further enable the expansion of TanzaniteOne's advanced cutting 
and polishing facilities in Tanzania 
 
Notes to the Editor: 
 
The intrinsic attraction of tanzanite and the finite nature of a single known 
resource at the foothills of Mount Kilimanjaro in northern Tanzania are 
undoubtedly part of tanzanite's allure. 
 
TanzaniteOne is the largest and most scientifically advanced miner and supplier 
of rough tanzanite, a unique position that affords it the opportunity to support 
and influence the entire channel, from mine to market, ensuring that maximum 
stakeholder value is achieved at each stage of the process. 
 
Our leading position in the tanzanite market has ensured TanzaniteOne the 
recognition and respect of its peers and provides the opportunity for expansion 
into a broader range of PCGs located at various key sites around the world. 
 
The following modified tanzanite grading and classification system is currently 
being used by the Company: 
 
+-------+----------------------------+ 
| Grade | Description                | 
|       |                            | 
+-------+----------------------------+ 
| A     | Exceptional Colour, Eye    | 
|       | Clean                      | 
+-------+----------------------------+ 
| B     | Rare Deep Colour, Eye      | 
|       | Clean                      | 
+-------+----------------------------+ 
| B     | B Colour - Slightly        | 
| (SI)  | Included                   | 
+-------+----------------------------+ 
| B     | B Colour - Included        | 
| (I)   |                            | 
+-------+----------------------------+ 
| BL    | Lighter Colour B grade,    | 
|       | Eye Clean                  | 
+-------+----------------------------+ 
| BL    | B Light - Slightly         | 
| (SI)  | Included                   | 
+-------+----------------------------+ 
| BL    | B Light - Included         | 
| (I)   |                            | 
+-------+----------------------------+ 
| D     | Opaque Material            | 
+-------+----------------------------+ 
 
                                      END 
 
For more information, please visit www.tanzaniteone.com or contact: 
Willi Boehm, Company Secretary 
+61 8 9367 5211 
 
Bernard Olivier, Chief Executive Director 
+61 4089 481812 
 
Nominated Adviser and Broker 
Ambrian Partners Limited 
Richard Greenfield 
+44 (0) 20 7634 4700 
 
Public Relations 
Threadneedle Communications 
Laurence Read/ Beth Harris 
+44 (0)7979 955 923 
 
 
 
 
This information is provided by RNS 
            The company news service from the London Stock Exchange 
   END 
 
 MSCSFDFALFSSEFM 
 

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