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diamond cut chart and symmetry

What is Diamond Cut?

Cut quality depends on craftsmanship. The term refers to the way each diamond’s facets interact with the light and reveal its internal fire. Cut gives each stone its distinct personality, and perfecting the proportions, symmetry, and precise angles of laboratory grown diamonds ensures they are cut for maximum brilliance.
Laboratory Grown Diamond Shapes
Swarovski Created Diamonds collections feature a range of different laboratory grown diamond shapes and cuts. The shape of a laboratory grown diamond refers to its outline or external form when viewed from above. Cut is a marker of quality, reflecting how well the stone has been faceted and polished as well as how the angles and proportions of each facet have been crafted to interact with the light. Choose one of our Swarovski Created Diamonds shapes to reflect your individual style and, as each stone is cut for brilliance, it will add luminosity to any look.
Color Principles and Factors
The most desirable diamond color is no color at all. Colorless stones are highly prized but they are also extremely rare, whereas lower quality diamonds can have a yellow or brown tone. The diamond color scale ranges from D to Z and Swarovski Created Diamonds collections only use laboratory grown diamonds with a color rating of D-G.
Colorless
D-F
Near colorless
G-J
Slightly tinted
K-M
Very light color
N-R
Light color
S-Z

Diamond color scale

Diamond color is rated on a scale from D to Z. D to F are used to denote colorless stones, while those in the S to Z categories appear in shades of light yellow or brown. Swarovski Created Diamonds jewelry only uses the finest laboratory grown diamonds, meaning they range from colorless to near colorless (D-G).

What is Diamond Carat Weight?

A carat is a unit of weight used to measure precious stones including laboratory grown diamonds. When comparing diamonds, one can have a higher carat without appearing larger, and two diamonds with the same carat weight can vary in size if one is cut deeper than the other. One carat weighs one-fifth of a gram and can be divided into 100 points.
2.5 mm
0.05 CT
3.0 mm
0.10 CT
3.8 mm
0.20 CT
4.5 mm
0.30 CT
4.8 mm
0.40 CT
5.2 mm
0.50 CT
5.8 mm
0.70 CT
6.3 mm
0.90 CT
6.5 mm
1.00 CT
6.9 mm
1.25 CT
7.4 mm
1.50 CT
7.8 mm
1.75 CT
8.2 mm
2.00 CT
8.8 mm
2.50 CT
9.4 mm
3.00 CT

Diamond Carat Weight Chart

Title:

Laboratory grown diamond carat scale

Subtitle:
Carats are the international standard unit of measurement for the weight of a diamond. It derives from the word ‘carob’, a seed that was used as a diamond weight reference for traders in the ancient world. One carat is equal to 200 milligrams so a five carat diamond will weigh one gram. Diamond carat doesn’t equate to the size of a stone, it simply refers to how much it weighs, and diamonds usually become more expensive as their carat weight increases.
Quality Assured
Every laboratory grown diamond set in Swarovski Created Diamonds fine jewelry is assessed and certified by the IGI (International Gemological Institute), using the universally recognized 4Cs. The cut, clarity, color, and carat of each stone determines its quality and worth. Swarovski only uses high quality laboratory grown diamonds rated G+ in color and VS+ in clarity.

Frequently asked questions

Diamond 4Cs FAQs

What are the 4Cs?

Every diamond varies slightly from the next and has its own individual distinguishing characteristics. Laboratory grown diamonds are 100% diamonds, and just like mined diamonds our laboratory grown diamonds are evaluated according to the 4Cs of diamond grading. The 4Cs are color, clarity, cut and carat weight, and they are the globally accepted standards used to assess the quality of diamonds.

Is diamond clarity important?

The higher the clarity grading, the less inclusions or blemishes a diamond has, making it a higher-value diamond than one with a lower grading.

What is the highest diamond clarity?

Diamond clarity is a measure of the purity of the stone graded by the visibility of two types of characteristics - inclusions and blemishes. 
In order to assess clarity, the diamond is inspected under 10x power magnification. The number and nature of external (blemishes), and internal characteristics (inclusions), as well as their size and position, determine the grade. 
Gemologists grade diamonds from Internally Flawless (IF) as the highest quality to Included (I3).

Are laboratory grown diamonds flawless?

No, nearly all diamonds (mined or laboratory grown) have inclusions. Metallic inclusions can occur in laboratory grown diamonds. If an expert spots a trace of metal in a diamond, they can assume it is laboratory grown. While laboratory grown diamonds with defects do exist, Swarovski only uses high quality laboratory grown diamonds certified by the International Gemological Institute (IGI) according to the 4Cs to ensure that only the finest quality diamonds join the Swarovski Created Diamond collections.

Do laboratory grown diamonds get cloudy?

No, laboratory-grown diamonds do not get cloudy over time. They are 100% identical to diamonds with the same physical and chemical properties, and should not degrade or change appearance over time. Where poor quality diamond seeds have been used, some laboratory-grown diamonds contain obvious defects, such as color tinges from impurities in the diamond or crystal structure imperfections. The laboratory grown diamonds processed in Swarovski Created Diamonds jewelry are a very high quality standard and do not have unnatural, problematic characteristics.

How are laboratory grown diamonds certified and graded?

The laboratory grown diamonds processed in Swarovski Created Diamonds jewelry are hand-selected and examined by experienced gemologists to ensure they fulfill our high quality standards.  Every piece of jewelry in the Galaxy and Eternity collections is accompanied with a digital laboratory report from the International Gemological Institute (IGI). 

What are diamond facets?

Diamond facets refer to each flat surface that creates the shape of a diamond. Every diamond possesses multiple facets that enable it to absorb and reflect light.

How is diamond cut quality determined?

We often think of a diamond’s cut as shape (round, heart, oval, marquise, pear), but what diamond cut actually does mean is how well a diamond’s facets interact with light.  The cut of a diamond is the measure of the quality of the shape, geometry and finish of the diamond.  Round brilliant diamonds receive a formal cut grade on a scale from Ideal (the best) to Poor.  Swarovski is uncompromising on cut quality to ensure all of our laboratory grown diamonds have optimal light performance and sparkle.

What is the best diamond cut?

Cut refers to how a diamond’s facets interact with light to reveal its internal fire. It is the cut that gives each diamond its personality, and perfecting laboratory grown diamonds proportions, symmetry, and precision-cut angles of Swarovski Created Diamonds gives them their brilliant shine. The best cut has a balance between the width and depth to create symmetry, neither to shallow nor to deep. Creating the perfect refraction point for light through the diamond, reflecting it within the diamond and highlighting its polished brightness.

How is a diamond’s color determined?

顏色是指白鑽固有的天然色調。顏色分級的產業標準是將每顆鑽石與對照組鑽石進行對比評估,然後提供以英文字母 D (無色) 到 Z (淺黃色或棕色) 的區分等級。 
鑽石越接近無色,品質就越好。

實驗室製造的鑽石會有瑕疵嗎?

若使用品質不佳的鑽石種晶,某些實驗室培育的鑽石會有明顯的缺陷,例如:因鑽石中的雜質或晶體結構不完善造成的色差。Swarovski 不會販售具有反常、有問題特徵的培育鑽石。

什麼是鑽石克拉重量?

克拉是一種重量單位,專門用來衡量包括培育鑽石在內的珍貴寶石。克拉數較高的鑽石,外觀看起來並不一定較大;兩顆克拉數相同的鑽石,如果其中一顆切割得比另一顆深,它們的大小會不相同。一克拉的重量是 0.2 公克,區分成 100 分。

鑽石的克拉重量是什麼?如何測量,重要性為何?

克拉重量是鑽石的標準重量單位,也是分級過程的第一步。鑽石克拉重量是衡量鑽石重量的單位。每克拉可細分為 100“分”。 這樣在測量重量時就可以精確到小數點後兩位。小於一克拉的鑽石重量可以只用“分”來描述。鑽石越大,克拉重量就越多,但只有您才能決定這對您來說有多重要。

鑽石的克拉重量愈大愈好?

這完全是取決於個人的問題。如果您正在尋找一顆較大的鑽石,您應該尋找克拉數較高的鑽石,因為克拉數表示鑽石的重量,因此也表示鑽石的大小。