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Glossary

Use our glossary of terms to help you better understand what is involved in all facets of the diamond & jewelry manufacturing process. Our terms are referenced from A Diamond Is Forever.

Ring Carat Total Weight

One center diamond:
If the jewelry item is set with only one diamond (i.e., a solitaire diamond ring, solitaire pendant, etc.), the total weight refers to the weight of the single diamond.

For example: "1.00 ct. tw." stands for a diamond that is
1 Carat Total Weight.

Multiple Diamonds

With multiple diamonds, we refer to the Total Diamond Weight as the combined number of carats of all the stones.

For example: A trilogy ring set with two side diamonds, each at 0.25 carat total weight and a center diamond with a 0.50 carat total weight will add up to a 1.00 carat total weight for the whole item (2 x 0.25 ct. tw. for side diamonds PLUS 0.50 ct. tw. for center diamond EQUALS 1.00 ct. tw.) Diamonds, Engagement Rings and Fine Jewelry at American Diamonds Forever

Metal American Diamonds Forever offers most jewelry items in a variety of different metals. Click on the metal type below to learn more:
  • Platinum
  • 14K or 18K Yellow Gold
  • 14K or 18K White Gold
Platinum:
Rare, valuable and durable, platinum is the purest of all metals used for fine jewelry. The beautiful cool white luster shows little wear, making it an ideal setting for gemstones. Because it is considered more valuable than gold - it's 35 times rarer - a stone set in platinum will cost more than the same stone set in gold. In the United States, jewelry stamped with "PLAT" must be at least 90% pure platinum to earn the mark.

Gold (Yellow) 14k or 18K YG:
Yellow gold ranges in color from a soft yellow to a bright rich golden hue. The differences between 18K and 14K are due to variances in the alloy combinations.

Example of yellow gold alloy combinations:
14K yellow gold (.585): 58.5% fine gold, 29% copper, 12.5% fine silver.
18K yellow gold (.750): 75% fine gold, 15% copper, 10% fine silver.

Gold (White) 14K or 18K WG:
White gold (not to be confused with silver) is essentially silver in color. The addition of nickel in the white gold alloy combination gives it a unique tone. Example of white gold alloy combinations:
14K white gold (.585): 58.5% fine gold, 23% copper, 12.5% nickel, 6% zinc.
18K white gold (.750): 75% fine gold, 2 % copper, 17% nickel, 6% zinc.

Setting Type
The style of the mechanism used to secure a diamond or gemstone in place.

Shape (Diamonds)
The term used to describe the gemological form of a diamond after it has been cut and polished.

Below are examples of different diamond shapes: Asscher: A square emerald cut, usually with 74 facets. The original Asscher cut was designed to improve the brilliance of the emerald cut and has a small table, high crown and steep pavilion for added brightness and sparkle.

Baguette: Named for the French baguette- a thin loaf of bread - this cut has four, step-cut facets that form a long, narrow rectangle.

Cushion: A square cut with rounded corners. The style of the cut looks like a combination of an old-mine cut (a square cut with a smaller table, larger culet and steeper crown, common in the late 1800s and the early 1900s) and a modern oval cut.

Emerald: A rectangular or square cut with 50 step-like facets plus the table. This facet arrangement reduces the brilliance of the diamond for a more reflective effect.

Heart: A diamond shaped like a heart. This modified brilliant cut has as many as 64 facets plus the table. The number of facets may vary depending on the overall proportions of the stone.

Marquise: A boat-shaped diamond that is long, thin and wider in the middle. A modified brilliant cut, it has as many as 64 facets and the table is pointed at both ends. The number of facets may vary depending on the overall proportions of the stone.

Oval: An elongated round diamond.

Pear: Rounded at one end and tapered at the other, just like a teardrop, the pear combines the brilliance of a round diamond with the elegance of a marquise shape.

Princess: A multi-faceted modified brilliant cut slightly rectangular to square in shape with corners at 90-degree angles.

Radiant: A rectangular or square diamond that combines different cuts to increase its sparkle. The crown is comprised of a step cut and scissor cut, while the pavilion uses a brilliant cut.

Round: The most popular shape for diamonds. A well-cut brilliant round diamond should have a total of 58 facets as well as be symmetrical and exhibit a high degree of brilliance.

Tapered Baguette: Similar to a baguette, the two longest sides of this rectangular step cut taper inward.

Trillion: Typically used as a side stone, this brilliant cut is shaped like a triangle and has 50 facets.



Color
A color scale is used to determine the total range of color in a specific stone. The diamond color scale ranges from colorless (D) to a distinct yellow tone (Z).



Clarity
Clarity grading is used to classify the type and location of any internal or external imperfections that may be visible to the unaided eye or visible under a 10x gem scope. The clarity scale ranges from Flawless (FL), no internal or external flaws to Included (I3), heavily included and visible to the unaided eye.
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