Ottawa - Cornerstone Capital Resources Inc. is pleased to announce exploration results to date at its Espejo and Rio Magdalena projects located within the Cornerstone Ecuador S.A. ('CESA') ENAMI EP strategic exploration alliance (the 'ENAMI-CESA SEA') in Northern Ecuador.

About the ENAMI EP - Cornerstone Strategic Exploration Alliance (SEA)

On June 14, 2016, Cornerstone announced that its Ecuadorean subsidiary, Cornerstone Ecuador S.A. ('CESA'), had signed a Spanish language Agreement, or Acuerdo de Colaboracion e Inversion para el Desarrollo Conjunto de Proyectos de Exploracion Minera (the 'Agreement') with Ecuador's State Mining Company, Empresa Nacional Minera Empresa Publica ('ENAMI EP'), replacing a letter of intent announced April 14, 2015, and creating a structure to jointly prospect and explore for mineral deposits in Ecuador (the 'ENAMI-CESA Strategic Exploration Alliance' or 'ENAMI-CESA SEA').

On March 6, 2017, Cornerstone announced that ENAMI EP had been granted a number of mineral concessions in Imbabura and Carchi provinces in the same area as the Cascabel (SolGold/Cornerstone) and Llurimagua (Codelco/Enami) concessions, for exploration by the ENAMI-CESA SEA. Nine concession titles totaling around 42,000 hectares were granted in 2017 by the Ministry of Mining (now the Ministry of Energy and Non-Renewable Natural Resources).

Sampling and assaying

CESA uses a fire assay gold technique for Au assays (FAS-111) and a four acid multi element technique (IMS-230) for a suite of 48 elements. FAS-111 involves Au by Fire Assay on a 30-gram aliquot, fusion and atomic absorption spectroscopy (AAS) at trace levels. IMS-20 is considered a near total 4 acid technique using a 20g aliquot followed by multi-element analysis by ICP-AES/MS at ultra-trace levels. This analysis technique is considered suitable for this style of mineralization.

Standards, blanks and duplicates are inserted 1/25 samples. The values of the standards range from low to high grade and are considered appropriate to monitor performance of values near cut-off and near the mean grade of the deposit. The check sampling results are monitored and performance issues are communicated to the laboratory if necessary.

Sample security was managed through sealed individual samples and sealed bags of multiple samples for secure delivery to the laboratory by permanent staff of the joint-venture. MS Analytical is an internationally accredited laboratory that has all its internal procedures heavily scrutinized in order to maintain their accreditation. MS Analytical is accredited to ISO/IEC 17025 2005 Accredited Methods.

CESA's sampling techniques and data have been audited multiple times by independent mining consultants during various project assessments. These audits have concluded that the sampling techniques and data management are to industry standards. All historical data has been validated to the best degree possible and migrated into a database.

Rock samples are collected by CESA's personnel, placed in plastic bags, labeled and sealed, and stored in a secure place until delivery by CESA employees to the LAC y Asociados ISO 9001-2008 certified sample preparation facility in Cuenca, Ecuador.

Rock samples are prepared crushing to 70% passing 2 mm (10 mesh), splitting 250 g and pulverizing to 85% passing 75 microns (200 mesh) (MSA code PRP-910). Prepared samples are then shipped to MS Analytical Services (MSA), an ISO 9001-2008 laboratory in Langley, BC, Canada, where samples are assayed for a multi-element suite (MSA code IMS-136, 15.0 g split, Aqua Regia digestion, ICP-AES/MS finish) and gold by Fire Assay (MSA code FAS-111, 30 g fusion, AAS finish). Over limit results for Cu (>1%) are systematically re-assayed (MSA code ICF-6Cu, 0.2 g, 4-acid digestion, ICP-AES finish). Gold is assayed using a 30 g split, Fire Assay (FA) and AAS finish (MSA code FAS 111). Over limit results for Au (>10 g/t) are systematically re-assayed (MSA code FAS-415, FA, 30g., gravimetric finish).

Soil samples are dried at low temperature, screened to 80 mesh (MSA code PRP-757), a 15 grams portion is then assayed for a multi-elements suite (MSA code IMS-136, Aqua Regia digestion, ICP-AES/MS finish).

Contact:

Mario Drolet

Tel: (514) 904-1333

Email: Mario@mi3.ca

Cautionary Notice

This news release may contain 'Forward-Looking Statements' that involve risks and uncertainties, such as statements of Cornerstone's beliefs, plans, objectives, strategies, intentions and expectations. The words 'potential,' 'anticipate,' 'forecast,' 'believe,' 'estimate,' 'intend', 'trends', 'indicate', 'expect,' 'may,' 'should,' 'could', 'project,' 'plan,' or the negative or other variations of these words and similar expressions are intended to be among the statements that identify 'Forward-Looking Statements.' Although Cornerstone believes that its expectations reflected in these 'Forward-Looking Statements' are reasonable, such statements may involve unknown risks, uncertainties and other factors disclosed in our regulatory filings, viewed on the SEDAR website at www.sedar.com. For us, uncertainties arise from the behaviour of financial and metals markets, predicting natural geological phenomena and from numerous other matters of national, regional, and global scale, including those of an environmental, climatic, natural, political, economic, business, competitive, or regulatory nature. These uncertainties may cause our actual future results to be materially different than those expressed in our Forward-Looking Statements. Although Cornerstone believes the facts and information contained in this news release to be as correct and current as possible, Cornerstone does not warrant or make any representation as to the accuracy, validity or completeness of any facts or information contained herein and these statements should not be relied upon as representing its views after the date of this news release. While Cornerstone anticipates that subsequent events may cause its views to change, it expressly disclaims any obligation to update the Forward-Looking Statements contained herein except where outcomes have varied materially from the original statements.

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