Le guide des 4C du diamant

Un gage de qualité international

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Que signifie 4C ?

Reconnus dans le monde entier, les 4C sont une référence dans le monde diamantaire pour évaluer la qualité et la valeur d’une pierre, selon quatre critères : la taille (cut), la clarté (clarity), la couleur (color) et le caratage (carat). Les diamants créés en laboratoire des collections Swarovski Created Diamonds sont également évalués en fonction des 4C par l’IGI (International Gemological Institute). Les diamants créés en laboratoire se distinguent par leur excellente qualité : G+ pour la couleur et VS+ pour la clarté.

Image conceptuelle d’une bague en diamant créé en laboratoire

La clarté

La clarté du diamant définit la pureté de celui-ci. La pierre est évaluée en fonction de deux critères visuels : les inclusions et les imperfections. Pour ce faire, le gemmologue a recours à une loupe de grossissement 10x. Le nombre et la nature des éléments externes (imperfections) et internes (inclusions), ainsi que leur taille et leur position déterminent le degré de clarté.

Clarté : principes et facteurs

On jugera la clarté d’un diamant créé en laboratoire en fonction de ses défauts. Ce sont ses inclusions et ses imperfections qui lui prêtent un charme et un caractère uniques. Retrouvez ci-dessous plus d’informations sur la clarté du diamant.

LE DIAMANT LE PLUS PUR

Le plus haut degré de clarté d’un diamant est noté I.F. (sans défaut interne). Ce type de diamant est d’une extrême rareté. La plupart des diamants extraits de mines ou créés en laboratoire possèdent des inclusions.

À l’œil nu

Tous les diamants possèdent des imperfections. Ceux ayant obtenu les notes I.F. et SI 2 comportent des inclusions invisibles à l’œil nu, pouvant uniquement être détectées à la loupe.

Types d’inclusions

Les différents types d’inclusion du diamant peuvent provenir de plumes, de gaz ou de métaux. Seuls les diamants créés en laboratoire comportent des inclusions métalliques.

LA MAGIE DE LA LUMIÈRE

Les inclusions et imperfections viennent affecter le parcours de la lumière au sein du diamant.

I.F.

Internally flawless

VVS 1

VVS 2

Very very slightly included

VS 1

VS 2

Very slightly included

SI 1

SI 2

Slightly included

I 1

I 2

I 3

Included

Diamond Clarity Chart

Diamond clarity scale and grades

The diamond clarity scale runs from I.F. to I 3 and is based on the number of inclusions and blemishes found in each stone. Diamond clarity grades are determined under standard viewing conditions with 10x magnification; I.F. is used to represent an internally flawless diamond, while at the other end of the diamond clarity chart, I 3 stands for the inclusion of a visible blemish. Truly flawless diamonds are extremely rare – almost all stones, including laboratory grown diamonds, have inclusions of some kind or other.

What is 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 stone its personality, and perfecting the proportions, symmetry, and precision-cut angles of lab made diamonds gives them their brilliant shine.

Cut Principles and Factors

The quality of how a lab grown diamond is cut is based on its proportions, symmetry, and polish. An expert cut creates a multitude of facets, absorbing and reflecting the light so the stone shimmers from every angle.

MAXIMUM BRILLIANCE

A diamond cut shape that is perfectly symmetrical with aligned facets will reflect the light at the highest possible intensity, emitting a powerful shine.

DIAMOND CUT CHART

Diamond cuts are graded by the IGI on a scale of Excellent to Poor. An excellent cut requires technical mastery, artistry, and expertise.

EVERY FACET

Facet is the term used to describe each flat surface that makes up the surface of a diamond, each absorbing and dispersing the light differently.

The bEST CUT

While proportion, symmetry, and polish determine a diamond’s place on the diamond cut table, there is no best cut when it comes to a stone that sparks joy.

Colorless

D-F

Near colorless

G-J

Slightly tinted

K-M

Very light color

N-R

Light color

S-Z

Diamond color scale and chart

Diamond coloring is rated on a scale from D to Z, with D clear ice white with no hint of yellow, while those rated Z are shades of yellow and brown. Each letter range on the chart denotes a shade of stone, with those rated D to F appearing colorless, through to S to Z appearing in shades of light yellow or brown. Swarovski only accepts the finest lab grown diamonds in its collections, meaning they range from colorless to nearly colorless diamonds (D-G).

Color Principles and Factors

Colorless stones are the most desirable in the world of diamonds and they are extremely rare. Swarovski Created Diamonds are evaluated against the standardized diamond color scale.

COLORLESS DIAMONDS

Truly colorless diamonds are extremely rare. Also known as ice white, D diamonds are also the most expensive diamond color to buy.

FIND YOUR SHADE

Finding a D diamond color isn’t always important when selecting your stone. A warm white might suit your individual style more than an ice white.

CONTROLLED ASSESSMENT

Each diamond’s color grade is assessed in a laboratory using controlled lighting, with the stone faced down, and with master samples used for comparison.

BLEMISHES

Laboratory grown diamonds do not include any intentional blemishes or the color defects that can come from the use of poorer quality carbon seeds.

What is diamond carat weight?

A carat is a unit of weight used specifically to measure precious stones including laboratory grown diamonds. A diamond may have a higher carat weight without appearing larger, and two diamonds of the same carat weight can vary in size if one is cut deeper than the other. One carat weighs 1/5 of a gram and is 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

Lab Grown Diamond Carat Scale

The carat measurement is derived by the word ‘carob’, a seed that was used as a diamond weight reference for traders in the ancient world. Carats are an international standard unit of measurement for the weight of a diamond. One carat is equal to 200 milligrams, so a 5 carat diamond will weigh one gram. The diamond carat does not refer to the size of a stone, simply how much it weighs. Diamonds usually become more expensive as their carat increases.

Discover Diamonds

Forever Brilliance

Swarovski Created Diamonds jewelry herald the start of an exciting new chapter. Expanding our unmistakable savoir-faire into multidimensional new territories and breaking new ground in our mastery of cut and light-filled creation.

Discover Swarovski Created Diamonds

man made diamonds impressionistic imagery

All About Swarovski Created Diamonds

Laboratory Grown Diamonds

Discover the world of Swarovski Created Diamonds jewelry, redefining the future of diamonds with exceptional collections that bridge the gap between tradition and current trends. From the otherworldly brilliance of our interstellar collection to the pure elegance of our signature pieces, find a style that will last a lifetime.

Lab Grown Diamonds Buying Guide

Find the perfect piece

A natural progression of our brand DNA, Swarovski Created Diamonds jewelry are laboratory grown diamonds, masterfully cut, intensely bright, and identical to their mined counterparts in every way but origin. Formed layer by layer from a carbon seed, they serve as a flawless reflection of nature’s radiance.

Read our Lab Grown Diamonds Buying Guide

培育鑽石是什麼？

培育鑽石的解釋

了解更多關於培育鑽石的資訊，以及如何複製鑽石在地球上形成的過程。探索 Swarovski Created Diamonds中不同切割方式的培育鑽石，以及設計背後的靈感來源。

培育鑽石是什麼？

Frequently asked questions

Diamond 4Cs FAQs

4C 是什麼？

每一顆鑽石都略有不同，都有各自的顯著特徵。培育鑽石除來源外與開採的鑽石在其他方面無異，因此我們的培育鑽石也是根據鑽石分級的 4C 標準進行評估。4C 是指顏色、淨度、切割和克拉重量，是全球公認的評估鑽石品質的標準。

鑽石淨度重要嗎？

淨度分級越高，鑽石的內含物或瑕疵就越少，其價值也就比分級低的鑽石高。

什麼是最高的鑽石淨度？

鑽石淨度是根據內含物和瑕疵這兩種特徵的可見度來衡量鑽石純淨度的等級。
為評估淨度，鑽石要在 10 倍的放大鏡下進行檢查。外部 (瑕疵) 和內部特徵 (內含物) 的數量和性質，以及它們的大小和位置，決定了鑽石的等級。
寶石學家對鑽石進行了分級，從最高品質的內無瑕 (IF) 到內含物 (I3) 。

培育鑽石是完美無瑕的嗎？

不是，幾乎所有的鑽石 (開採的或實驗室培育的) 都有內含物。培育鑽石可能會含有金屬雜質。如果專家在鑽石中發現金屬痕跡，便可以假定這是培育鑽石。雖然培育的鑽石確實存在瑕疵，但 Swarovski Galaxy 系列只選用經由IGI國際寶石研究院根據 4C 標準認證的優質培育鑽石，以確保 Swarovski Created Diamonds採用的都是品質優良的鑽石。

培育鑽石會變混濁嗎？

不會，培育鑽石不會隨著時間的推移而變得混濁。除了來源，它們與開採鑽石在其他方面100% 相同，具有相同的物理和化學特性，不會隨著時間的推移而退化或改變外觀。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 Created Diamonds 首飾所採用的培育鑽石具有極高的品質標準，不會出現反常或有問題的特徵。

培育的鑽石如何認證和分級？

Swarovski Created Diamonds 首飾中的培育鑽石均由經驗豐富的寶石學家手工挑選和檢驗，以確保這些鑽石符合我們的高品質標準。 Galaxy 和 Eternity 系列的每一件首飾都附有IGI國際寶石研究院的數位實驗室報告。

什麼是鑽石切刻面？

鑽石切刻面是指構成鑽石形狀的每個平面。每顆鑽石都有多個切刻面，使其能夠吸收和反射光線。

如何判定鑽石的切割品質？

我們通常認為鑽石的切割是指鑽石的切割形狀 (圓形、心形、橢圓形、橄欖形、梨形) ，但鑽石切割實際上指的是鑽石切割面與光線的相互作用。鑽石的切割是衡量鑽石形狀、幾何形狀和表面處理的品質。圓形明亮式切割鑽石的切割等級從理想 (最好) 到不良都有。 Swarovski 對切割品質毫不妥協，以確保我們所有的培育鑽石都具有出色的光線效果和閃耀程度。

什麼是最佳鑽石切割？

切割是指鑽石的切割面如何與光線相互作用，以顯示其內部的火光。切割的程序賦予每顆鑽石各自的獨特性，Swarovski Created Diamonds 培育鑽石出衆的比例、對稱性和精準的切割角度讓鑽石綻放璀璨的光芒。最佳的切割方式是在寬度和深度之間取得平衡，以形成對稱，既不會太淺，也不會太深。這會讓光線在穿過鑽石時創造精巧的折射點，將光線反射到鑽石內部，增強鑽石璀璨耀眼的亮度。

如何判定鑽石的顏色？

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。