Evaluating Diamonds


There are 4 C’s that are used for evaluating diamonds so you can make sure your getting the best value for your money.

Those 4 C’s are: color, cut, clarity and carat weight. Below are the reasons why these 4 items are important and how it can benefit you from our knowledge.

COLORDiamonds can cover the entire spectrum of colors. The majority range from a perceptible yellow or brownish tint up to the very rare diamonds described as colorless. Colorless diamonds are the most desirable since they allow the most reflection of light. Off-white diamonds absorb light, inhibiting brilliance.  You can best observe diamond color by placing the stone table-side up on a flat white surface or grading trough, and examining it from different angles. Next, place it table-side down with the culet facing you, and examine it through the pavilion facets.

Cut has the greatest influence on the diamond’s fire and brilliance. A round, brilliant-cut diamond has 58 facets. When well proportioned, this shape best shows the stone’s brilliance because it allows the most light to be reflected back to the eye of the observer. Stones that appear lifeless or seem dark in the center are probably poorly cut. When the angle relationship between the crown and pavilion facets is correct, rays of light entering the diamond strike the rear facets at an angle greater than the critical angle (24.5 degrees for a diamond) and reflect back to the eye of the observer. If the stone is cut too deeply, the light strikes the rear facets at an angle less than the critical angle and the light is lost through the sides of the diamond. If the stone cut is too shallow, the light passes through the diamond without being reflected back.

Most diamonds contain minute traces of non-crystallized carbon and internal stress fractures. Called inclusions, most of these are not apparent to the naked eye but can be seen in loose stones under magnification. Perfect clarity means that no inclusions are discernible when the diamond is examined under a 10x lens. Inclusions greatly affect the beauty and value of a diamond because they absorb the light rather than allowing it to be reflected back through the front  of the stone. How much they reduce the value of a diamond depends on their size, number and position within the stone. An inclusion in the center of a diamond beneath the table is more visible than one near the edge. It also may be mirrored many times by adjoining facets.

The term carat comes from the ancient practice of weighing diamonds against the seeds of the carob tree. The system was eventually standardized, and one carat was fixed at .02 grams. One carat is divided into 100 points, so a quarter-carat diamond is 25 points or 0.25 carat. Although carat is a unit of weight, not size, the carat weight of a diamond has come to refer to particular sizes. If properly cut, diamonds of the same wright should be about the same size. These sizes don’t apply to other gems, however, because their specific gravities differ from a diamonds.

Birth Month Stones

FAQ's,General Info

Limited Warranty


All products carry a full one year, limited warranty due to workmanship/material/manufacturers defect or a manufacturer warranty, whichever is greater. Black Forest, Ltd. will at its option replace, repair, or refund an amount not to exceed the original purchase price of products, not including the cost of precious stones, constructed of at least 10k precious metal quality in the event of workmanship or material defect for a period of one year from date of shipment. All other metal products are warranted to be free from manufacturing defect at the time of shipment from the factory and are not warranted for tarnish or discoloration.

Workmanship or material failure of synthetic stones will be covered by replacement at no cost or refund of an amount not to exceed the original purchase price for a period of 1 year from the date of shipment. Abuse, neglect, discoloration or oxidation of base metal, gold products of less that 10K value, or Sterling silver products will not be covered. Precious stones are warranted to be free from defect at the time of shipment from the factory. There is no warranty for loss of precious stones.

Black Forest shall not be liable for any other damage whatsoever, including lost profits or any other incidental or consequential damages, by reason of defect, delay, or other breach or claimed breach of these terms, and disclaims any liability for such damage to the full extent. Such disclaimers are protected by Minnesota’s enactment of the Uniform Commercial Code, Minnesota Statutes Section 336.2-719.

Any product requiring warranty consideration must be returned in accordance with “Return” policy to our factory for evaluation. You may incur unnecessary charges if you ship product to Black Forest without prior authorization. Items returned without authorization will be disposed 30 days after receipt.

A quote for repairs not covered will be furnished before any repair is started. “This warranty gives you specific legal rights and you may also have other rights which vary from state to state.”


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It shall be the sole responsibility of the client to obtain authorization to reproduce or use for any purpose the legally restricted or otherwise exclusive trademark, logo, design, or copyright from the rightful owner of, or authorized agent for, the owner of the same. Black Forest, Ltd. assumes no liability for the use, including reproduction, or infringement of any registered trademark or copyright. All costs to resolve disputes including litigation shall be the sole responsibility of the client and will be promptly paid by the client to Black Forest, Ltd.


General Info

Returns will not be accepted by the factory without a ‘Return Goods Authorization” issued by Black Forest. Acceptance of returned goods does not constitute a credit or refund. All authorizations for returns other than those which are specifically for consideration of applicable workmanship or material defects as determined by Black Forest must be requested within 10 days of shipment. You may incur unnecessary charges if you ship product to Black forest without prior authorization.