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Fracture-Filled (Clarity Enhanced)

The term clarity enhanced is a more polite term for fractured-filled diamonds. All the same, fracture-filled diamonds are now a mainstream treatment for clarity improvement. A silica-type substance (similar to glass) is heated to a liquid state and forced under pressure into the open inclusion. When using the term "open", this can refer to a hairline opening at the stone's surface. Laser drill holes are also used to insert the filling when the fractures are not accessible from the surface.

All the companies treating and selling fractured-filled diamonds, guarantee the treatment for life, and are willing to re-fill a diamond that has been adversely affected. With age, or depending on the amount of light exposure, the filling will darken or discolor over time. Again, the companies selling the product have made it clear that the treatment will be re-administered for no charge.

At this writing, fillings are becoming more difficult to detect. A flash effect due to the filling, is usually present and is unmistakable: Shades of blue, violet, green, and other colors give it away. Often the flash effect is very subtle and can be easily overlooked. This is another very good reason to meticulously scrutinize every diamond that comes your way to make sure that it does not cause serious problems in resale or to the buyer's regret.

It is of utmost importance to represent fracture filled diamonds as such, both from an ethical point of view and from a "diamond trade rules" point of view. These diamonds are discounted considerably depending on the outcome of the treatment.

Image of fracture filling in a diamond

Fracture filling flash is a pinkish orange and yellow. (Courtesy of Oved Diamond Co.)

Image of a minimal flash effect

Fracture filling flash is a burnt orange and yellow. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

Fracture filled diamond. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

Some of the inclusions may not exhibit flash effect but many will. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

Very subtle flash effect with what could be just the edge of a very large inclusion. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

Note the green flash along side the burnt orange. High magnification. (Courtesy of Oved Diamond Co.)

Image of fracture filling in a diamond

The fracture filling is especially noticeable in this diamond due to the transparency of the inclusion. (Courtesy of Oved Diamond Co.)

Fracture filling flash is a burnt orange and yellow

Minimal flash effect may fool some buyers. The transparent inclusions would make it apparent in this stone. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

Fracture filled diamond. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

A pavilion view of a fracture filled diamond. Note the transparency of the inclusions. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

A small amount of burnt orange flash effect. (Courtesy of Oved Diamond Co.)

Fracture filled diamond

A fracture filled diamond. (Courtesy of Oved Diamond Co.)