DOR Dianor Resources Inc.

Dianor Resources Inc. (TSX VENTURE:DOR)(OTCQX:RSDNF) is pleased to announce that
there is a sparkling bright future for the diamonds of the Leadbetter Diamond
Deposit, located 12 kms northeast of Wawa, Ontario, according to RBC Capital
Markets and other commentators. At the recent RBC Capital Markets 4th Annual
Diamond Conference in London, UK, the case was made that prices for both rough
and polished diamonds should continue to rise based on supply and demand
fundamentals(1). And this after a stellar run on the rough diamond price, which
has appreciated over 70% since January of 2007(2), with similar performance to
gold, silver, and copper. Both coloured and colourless/clear diamonds are
increasingly being viewed as a long term investment asset class, with new
investment vehicles set up to benefit from long term price appreciation noting
short term gains(3). 


Demand growth is driven by China and India where urbanisation and an emerging
middle class is expected to increase diamond consumption by 21% and 24%
respectively over the next year(4). Tight diamond supply in China has seen
buyers moving into diamonds not typically satisfied by classical demand; since
2004, the Chinese appetite for diamonds has risen from US$150 million to US$1.2
billion in 2010(5); rough shortages of up to 30% in India is causing Indian
diamond cutting and jewellery concerns to seek stable long term supplies
overseas(6). Many industry sources estimate that by 2020 the rough diamond
shortfall will be in the order of US$5 billion to US$7 billion annually. Current
world diamond reserves are estimated at only 15 years at current production
levels, (including expansions, new mines and discoveries). Against this
scenario, Dianor's Archean conglomerate diamond model is potentially applicable
to many areas in the world as recently demonstrated by the discovery of similar
diamond-bearing rocks in Cameroon in Africa(7).


"Given the tight supply-demand fundamentals of the diamond market", said CEO Mr.
John Ryder, P.Geo., "our Leadbetter diamond deposit appears to be able to
satisfy, in part, the supply deficit of the coming years. We've enjoyed a great
deal of success exploring and developing a large tonnage diamond deposit with
kimberlitic affinity from Archean conglomerates and expect bulk-sampling to
confirm our exploration results".


Because the host rock is not a kimberlite, the deposit is not limited in size to
that of the typical kimberlite. Geological modelling (NI 43-101 compliant)
suggests that the Leadbetter Diamond Deposit hosts 566 million tonnes (+/- 17
million tonnes) of diamond-bearing conglomerate(8). 


The Dianor model of kimberlitic-affinity diamonds(9) in Archean conglomerates
may be applicable to other cratonic and off-cratonic terrains around the world.
"We've applied this model to northern Quebec", said Mr. Ryder, "with the
discovery of extensive areas of diamond-bearing conglomerate, including rare
purple diamonds. We are confident that the Dianor diamond discovery model works
very well indeed."


A 7.6 tonne sample of drill cores from 24 drill holes yielded a grade of 35
carats per hundred tonnes (cpht) for stones greater than 0.85mm and a grade of
71 cpht for stones greater than 0.425mm for all diamond-bearing units. Based on
drilling the average true thickness of the Archean conglomerate is 236m. 


Drill data for the main conglomerate S1C unit shows high grade bands ranging to
96.7m in true thickness; diamond content at 0.425mm ranges to 264 cpht; and
diamond content at 0.85mm ranges to 214 cpht. Results of exploration to date
suggest that the Leadbetter Diamond Deposit has economic diamond mining
potential in non-Arctic settings, compared to traditional Canadian kimberlite
diamond deposits. 


Studies conducted under the auspices of Dr. Maya K. Kopylova at the University
of British Columbia shows that among 75 diamonds (0.4mm to 2mm) from the
conglomerate, nitrogen-bearing diamonds comprise Type IaA (47%) and Type IaAB
(23%) with 5-84% of totally aggregated N(10). A potentially large proportion of
diamonds, approximately one third belongs to Type II having no measurable
nitrogen. Type 2 stones are dominantly clear and colourless; the 3,106 ct
Cullinan and 186 Koh-I-Noor diamonds are two famous historical examples of Type
2 diamonds. Fluid inclusion composition studies on 3 diamonds having fibrous
coats showed that they have saline compositions that are similar to those from
the Diavik and Koffiefontein Phanerozoic kimberlites(11). Based on studies of
Afanasiev et. al. the predominance of octahedral shapes and low proportion of
rounded dodecahedroids (less than 20%) present in the Wawa diamonds is typical
of economic kimberlites with high diamond grades(12). Studies of mineral
inclusions in the conglomerate diamonds determined that they formed in the cold
(less than 42 mW/m(2)) harzburgitic mantle at depths 160-225 kms. Such thermal
regime and composition of the mantle root is favorable for diamond
potential(13). 


Diamond distribution plots for the S1C unit plot in a manner similar to
kimberlites, from which the Company can derive predictive models of potential
diamond grades. 


The Company also announces that it has amended its stock option plan so as to
increase the number of shares that may be issued under the stock option plan
from 11,800,000 to 20,000,000. As there are currently 266,636,913 common shares
issued and outstanding, the 20,000,000 common shares reserved for issuance under
the stock option plan represent 7.5% of Dianor's issued and outstanding shares.
The Board of Directors of Dianor amended the stock option plan in light of the
increase in the number of Dianor's issued and outstanding shares. Dianor has
received all required regulatory approvals for the amendment to its stock option
plan.


The Company's main focus is still the advancement of the 50,000 tonne bulk
sample of its flagship Leadbetter diamond project which is in the same vicinity
of the Lucy Iron Range. It is important to note the year round accessibility of
both projects located close to the mining town of Wawa with its modern hospital,
airport, and experienced mining labour force. 


Mr. Jim Steel P.Geo is the Qualified Person for the technical content of this
press release. 


About Dianor

Dianor is an innovative exploration company focused on advancing diamond
exploration properties in the Superior Craton of Canada. The Leadbetter Diamond
Project is its most advanced project and is geographically well situated and
easily accessible, some 12 kilometres north east of Wawa in Northern Ontario.
Substantial exploration work has been conducted on the project since 2005 and in
May 2009, the Company received government approval to proceed with a 50,000
tonne bulk sampling programme of the 2.697 Ma old Archean Conglomerate. A
preliminary tonnage estimate for this conglomerate is in the range of 549
million to 583 million tonnes (press release July 24th 2007). In addition to
diamonds, the conglomerate contains gold, sapphires and rubies (press release
January 18th 2007). In 2008, additional diamond discoveries, including rare
purple diamonds, were made by the Company in rocks of similar type, age
(Archean) and geological settings (press release March 3rd, April 10th,& May
13th 2008) in Quebec. The Quebec diamond properties have increased our portfolio
of low cost, accessible exploration targets. These diamond discoveries (Ontario
and Quebec) are both unique and amongst the oldest diamond-bearing occurrences
in the world.


References

1. Kilalea, D., Morton, P., Nattel, I., and Gravel, M., RBC Capital Markets 4th
Annual Diamond Conference, May 16, 2011, London, UK. Used with permission. 


2. Stornoway Diamonds & WWW International Diamond Consultants. 2010. Rough
Diamond Price, Indexed. Used with permission. 


3.Unknown. 2011. Codiam Fund Reports Nine Percent NAV Growth in First Three
Months, http://www.hedgeweek.com/2009/02/16/codiam-fund-reports-nine-cent.htm 


4.Srodawa, J.2011. Global Diamond Demand Leads to Shortages and Price Increases,
in, Inflection Points, http://www.gembrooke.com 


5.DeBeers. 2010. China's Polished Diamond Imports - chart. DeBeers Family of
Companies, London, UK, used with permission. 


6.Hazarika, N.M. 2011. India Reiterates Demand for Direct Supply of Rough
Diamonds.
http://smetimes.tradeindia.com/smetimes/news/top-stories/2011/Feb/19/india-reiterates-demand-for-direct-supply-of-rough-diamonds.html


7. Teeling,J. 2011. Reconnaissance Program Begins in Cameroon. Botswana Diamonds
PLC News Release 13 April 2011.
http://online.hemscottir.com/ir/bod/ir.jsp?page=news-item&item=647653150966321. 


8. Verley, C., D'Amours, and C. Martel. 2007. Preliminary Tonnage Estimate for
the Diamondiferous Conglomerates of the Leadbetter Diamond Project. NI 43-101
Technical Report, Dianor Resources Inc, p16. 


9. Kopylova, M.G, Afanasiev, V.P., Bruce, L, and J. Ryder. Diamondiferous
Conglomerate Preserves Evidence for Kimberlite and Deep Cratonic Root of the
Mesoarchean Southern Superior Craton. Abstract, 2011 Goldschmidt Conference,
Prague, August 2011. http://goldschmidt2011.org/abstracts/finalPDFs/1221.pdf


10. Loryn Bruc, Maya Kopylova, Micaela Longo, John Ryder, 2010. Diamonds in an
Archean Greenstone Belt: Diamond Suites in Unconventional Rocks of Wawa,
Northern Ontario, Canada. Geological Association of Canada - Mineralogical
Association of Canada, Calgary May 2010 Technical Program.
http://www.geocanada2010.ca/program/program-schedule/thursday/pm-4/cratons-kimberlites-and-diamonds.html


11. Smith, E.M., Kopylova, M.G., and J.Ryder. 2011. Fluid Inclusion Compositions
in Archean Fibrous Diamonds from Wawa, Ontario. Geological Association of Canada
- Mineralogical Association of Canada, OttawaMay 2011 Technical Program, Ottawa,
ON.
http://gac.esd.mun.ca/gac_2011/search_abs/sub_program.asp?sess=98&form=10&abs_no=95



12. Afanas'ev, V.P., Yefimova, E.S., Zinchuk, N.N,, Koptil, V.I., 2000. Atlas of
morphology of diamonds from Russian sources, Russian Academy of Sciences,
Siberian branch, Novosibirsk. 


13. Miller, C.E Kopylova, M., Ryder, J.,Origin of diamonds in Archean
diamondiferous conglomerate from Wawa, N. Ontario. Geological Association of
Canada - Mineralogical Association of Canada, Ottawa May 2011 Technical Program,
Ottawa, ON.
http://gac.esd.mun.ca/gac_2011/search_abs/sub_program.asp?sess=98&form=10&abs_no=15



Forward-Looking Statements 

This news release contains statements that may constitute "forward-looking
information" or "forward-looking statements" within the meaning of applicable
securities legislation. This forward-looking information is subject to numerous
risks and uncertainties, certain of which are beyond the control of Dianor
Resources Inc. ("Dianor"). Actual results or achievements may differ materially
from those expressed in, or implied by, this forward-looking information. No
assurance can be given that any events anticipated by the forward-looking
information will transpire or occur, or if any of them do so, what benefits that
Dianor will derive therefrom. Forward-looking information is based on the
estimates and opinions of Dianor's management at the time the information is
released and Dianor does not undertake any obligation to update publicly or to
revise any of the forward-looking statements, whether as a result of new
information, future events or otherwise, except as may be required by applicable
securities laws.

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