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The Only with 5Cs
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Most of the jewellery pieces purchased from Josef Ryan Diamonds, from 0.50 carat and above, come with the certificate of the world's foremost authority in gemology, Gemological Institute of America (GIA).


Link to GIA Website
GIA, a non-profit institute, has ensured public trust in gems and jewelry since 1931.  It is the most trustworthy institution that provides the leading source of knowledge and training in gems and jewelry. Among all certificates there are worldwide, GIA has the highest standards.


It is essential to have a GIA certificate when you purchase a diamond of quality. 
Josef Ryan Diamonds is more than just beautiful work and expertise, but we've been trained and certified by the diamond world's highest authority. Moreover, our excellent customer service, years of experience, and prices are why our customers have 100% confidence.



A carat is the unit of measurement referring to the weight of a diamond. One carat is equal to 200 mg, or 0.2 grams. One carat is divided into 100 "points".  
A .75 carat diamond is the same as a 75-point or three-quarter carat. Larger diamonds are found relatively infrequently in nature, and therefore, the price of a diamond increases exponentially in relation to its size.

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Diamonds range in colour from icy winter whites to slight tones of yellow or brown.
Colourless diamonds are very rare in nature, and therefore they are very desired and priced accordingly. Another rare feature of nature is natural coloured diamonds. 
Colour grades are stated by a letter ranging from 'D', which is colourless, to 'Z' which is yellow.

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Inclusions are natural identifying characteristics such as minerals or fractures that unique to each diamond. Diamonds with little or no inclusions are more highly valued not only because they are rare, but also because inclusions can disrupt the flow of light in the diamond and, therefore, diminish a diamond's brilliance.

Clarity grades are assigned based on the degree to which they are included ranging from IF (internally flawless) to 1-3 (included).

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IF – Internally flawless

VVS – Very very slightly included

VS – Very slightly included

SI – Slightly included

I – Included



The diamond cut affects the pricing because it characterizes the maximizing of light performance. The cut is a style or design guide used to shape diamonds for polishing, such as a brilliant cut, the fire and sparkle that we see. Cut refers not to the shape (round, oval, heart-shaped) but the facets, symmetry, dimensions and sparkle of the diamond (reflective qualities). The cut of a diamond significantly affects the brilliance of a diamond; this means that if it is poorly cut, it will be less shimmering, and on the contrary, the finer the cut, the greater the brilliance and fire of the diamond. Cut grades vary from Poor to Excellent. For over 40 years, Josef Ryan Diamonds has served thousands of customers and provided them with the best available cut.  


      Excellent Cut                        Good Cut                                    Poor Cut

Excellent Cut - The highest level of fire and brilliance.  All the light reflects throughout the diamond’s table.
Very Good - Excellent brilliance and fire. A high percentage of the light reflects through the diamond’s table. Only gemologists can tell the difference, and they usually check it with special equipment. 
Good Good - Showcase brilliance and sparkle, with much of the light reflecting through the table to the viewer’s eye. These diamonds provide beauty at a lower price point.
Fair Fair - offers a low percentage of brilliance; it has significant light leakage. Diamonds of a Fair Cut are sometimes used for side stones with smaller carats.
Poor Poor - Returns just about no sparkle at all, brilliance or fire. Entering light escapes from the sides and bottom of the diamond.


Our selection of quality jewelry is one of the best. We offer a wide variety that will suit each and every person's budget and needs. Get in touch with us today to see what we've got to offer.

You'll be surprised by how convenient and easy it is to do business with us.


Our collection is available at our Winnipeg, MB facility.
444 St Mary Ave, Winnipeg, MB R3C 3T1
Tel: (204) 943-0468
Fax: (204) 949-1631

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