Vancouver, B.C. – December 14, 2020 - Tres-Or Resources Ltd. (“Tres-Or” or the “Company”) (TSXV: TRS, OTCPK: TRSFF) is encouraged by the diamond indicator mineral chemistry reported from samples of Guigues drill core sent to C.F. Mineral Research Limited, an ISO 9001:2015 certified/ISO 17025:2005 compliant laboratory in Kelowna, B.C.

C.F. Minerals, hand-picked over 8,000 indicator minerals and then selected 701 for new microprobe analyses. The analyzed indicator minerals include eclogite and pyropes garnets, chromite, chrome diopside, picroilmenite, and olivine recovered from different parts of the pipe (Table 1). The new microprobe results support Tres-Or’s previous interpretation of a mantle indicator mineral signature comparable to the Victor kimberlite, especially in regards to having numerous eclogitic and lherzolitic garnets with compositions similar to diamond inclusions at Victor (Stachel, et al., 2020). C.F. Minerals also examined sample residues for microdiamonds, recovering 5 natural stones, all less than 106 microns in size.

In total, the 3 samples weighed 393.34 kgs and after arrival in Kelowna and were disaggregated by attrition milling, with the +106 micron material concentrated by density and magnetic properties.

Table 1: Counts of diamond inclusion (DI) composition indicator minerals
* EG 4 12 15
  PY 3 8  
  OL 12 12  
  CHR 1    
  CD 1 9  

The highly encouraging indicator mineral chemistry at Guigues is closely similar to De Beers’ Victor Diamond Mine, and differs from the standard model for diamond exploration. The Guigues Kimberlite diamond potential, like that of the Victor Diamond Mine, is based on high-priority source of diamonds from mantle eclogite and lherzolite rocks, instead of the standard harzburgite (G10) sources. The potential diamond source for Guigues is marked by recovery of eclogite and lherzolite garnets that have distinctive compositions just like diamond inclusions recently described from Victor by Stachel et al. (2018). The Guigues Kimberlite yields numerous lherzolite and eclogite garnets of comparable diamond inclusion composition, as recently confirmed by application of CF Mineral Research Laboratory’s updated classification system by owner and originator Dr. Charles Fipke.

The overlay of the fields for Victor’s lherzolitic and eclogitic diamond inclusions with those from the Guigues Kimberlite shows the strong similarities between garnet populations (Figure 1).

Figure 1: All garnet analyses from the Guigues Kimberlite. Fields from Victor diamond inclusions.

Eclogite garnet inclusions from Victor (analyses below 0.75% Cr2O3 above) show a strong population of low titanium and increasing sodium, similar to eclogite garnet inclusions from around the world, including Victor (Figure 2).

Figure 2: Low chromium garnets from Guigues, including those that plot in the eclogite diamond inclusion field.

Microdiamond counts were reported in Tres-Or’s news release dated November 9, 2020 using modern microdiamond methods at the Saskatchewan Research Council Geoanalytical Laboratories Diamond Services (SRC). In total, 6 of the sample bags yielded between 1 and 4 microdiamonds each (27 bags (8 kg each) analyzed), consistent with reasonably widespread distribution of diamonds throughout the tested kimberlite intervals. In other words the microdiamonds were not derived from just one or two places, as might happen with a single stone crushed during sampling, or a group of stones from a single diamond-bearing mantle xenolith.

Three (3) additional samples of approximately the same sizes but from distant parts of the Guigues pipe are currently being processed for microdiamond content at SRC. Results, including counts and nitrogen contents, will be reported as soon as available. This work together with the initial microdiamond analyses testing program results will provide additional data for further follow-up exploration work recommendations.

See Tres-Or’s website ( for more details on the Guigues Kimberlite Pipe.

Cautionary Statement:

Note that although the indicator mineral chemistry is closely similar to the Victor Diamond Mine, and the microdiamond results reported point towards potential to carry larger stones (refer to Type II microdiamonds recovered from Guigues as reported in Tres-Or’s news release dated December 8, 2020), this does not necessarily mean the Guigues Kimberlite will host diamonds of economic size. Tres-Or’s ongoing microdiamond tests are expected to better define the potential to host economic diamonds.

About Tres-Or Resources Ltd.

Tres-Or Resources Ltd. is a Canadian resource company focused on exploring for diamonds and gold resources in the Témiscamingue and Abitibi regions of Québec and is listed on the TSX Venture Exchange under the trading symbol “TRS”. Additional information related to the Company is available on SEDAR and on the Company’s website (

On behalf of the Board of Directors

“Laura Lee Duffett”

Laura Lee Duffett, P.Geo.
President and CEO

For further information

Laura Lee Duffett, President & CEO: +1 (604) 541-8376 –
Dean Claridge, Business Development: +1 (604) 688-8700

Neither the TSX Venture Exchange nor its Regulation Service Provider (as the term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Qualified Persons

Disclosure of a scientific or technical nature related to the Company’s projects and exploration activities in this news release was prepared under the supervision of Dr. Harrison O. Cookenboo, B.Sc., M.Sc., Ph.D., P.Geo., the Company’s independent Qualified Person (as such term is defined in National Instrument 43-101), and Ms. Laura Lee Duffett, P.Geo., the Company’s President and CEO, who is a non-independent Qualified Person, both of whom have reviewed and approved the technical and scientific portions of this presentation.

Forward-Looking Statements

This news release contains projections and forward-looking information that involve various risks and uncertainties, including, without limitation, statements regarding the potential extent of mineralization, resources, reserves, exploration results and plans and objectives of the Company. These risks and uncertainties include, but are not restricted to, the early stage development of the Company and its projects; general business, economic, competitive, political and social uncertainties; capital market conditions and market prices for securities, junior market securities and mining exploration company securities; commodity prices, the amount of geological data available, the uncertain reliability of drilling results and geophysical and geological data and the interpretation thereof and the need for adequate financing for future exploration and development efforts. There can be no assurance that such statements will prove to be accurate. Actual results and future events could differ materially from those anticipated in such statements. These and all subsequent written and oral forward-looking statements are based on the estimates and opinions of management on the dates they are made and are expressly qualified in their entirety by this notice. The Company assumes no obligation to update forward-looking statements should circumstances or management's estimates or opinions change.