Why Lab Grown Diamonds Proportions Matter

When selecting the best lab-grown diamonds, most people focus on the 4Cs of diamonds — cut, color, clarity, and carat weight. These factors are important, but there’s one more critical factor that people often don’t talk about. Diamond proportions.

In this blog, we take a deep dive into lab grown diamond proportions and why they matter so much, and why you must consider diamond cut and diamond proportions when buying diamonds.

The Science Behind Lab Grown Diamond Proportions

Before we get into the details, what is diamond proportion? Diamond proportion refers to the various measurements of a diamond, for instance, the table size, crown angle, pavilion depth, and total depth. These measurements determine how light interacts with the diamond and how the diamond performs under different lighting.

When a lab-grown diamond is cut with ideal proportions, light enters through the top, bounces around inside, and reflects back to the viewer's eye. This process creates a sparkle in the manufactured diamond. If the proportions are too deep or too shallow, light escapes through the sides or bottom, resulting in a dull, lifeless appearance.

Lab-grown diamonds, manufactured diamonds, or cultured diamonds have the same physical, chemical, and optical properties as natural diamonds. They're created in controlled laboratory environments that replicate the natural diamond-growing process.

Just like natural diamonds, the proportions of lab-grown diamonds have an impact on their brilliance and fire. The advantage of lab-grown diamonds is that cutters often have more flexibility to prioritize ideal proportions since they're not constrained by trying to maximize carat weight from a natural rough diamond.

The Importance of Diamond Cut in Diamond Proportions

Diamond cut grades are extremely important and are influenced by proportions. Diamond cut grades range from Excellent to Poor. Let’s look at different diamond cut grades in brief.

Excellent: Reflects almost all light that enters the diamond and offers maximum brilliance.
Very Good: Reflects most light that enters the lab-grown diamond.
Good: Reflects a good amount of light.
Fair: Reflects some light of the cultured diamond.
Poor: Reflects minimal light.

How do Diamond Proportions Vary for Different Diamond Shapes?

Round brilliant	It has the most precise ideal proportions with maximum light return
Princess cut	Square or rectangle with pointed corners, this diamond cut has a depth of 65 to 75%
Oval cut	This elongated diamond appears larger than round diamonds of the same carat weight
Cushion cut	Square or rectangle with rounded corners, it displays the best diamond fire
Emerald cut	This lab-grown diamond has step-cut facets and displays brilliance
Pear shape	Teardrop shaped, this diamond cut has round and marquise cut features
Radiant cut	Square or rectangle with trimmed corners, this diamond displays brilliance

How to choose well-proportioned lab-grown diamonds?

When looking for well-proportioned natural or lab-grown diamonds, consider these key measurements:

Table Percentage: Ideally between 53-58% for brilliant round cuts
Crown Angle: Typically, 34-35 degrees for maximum brilliance
Pavilion Angle: Optimally around 40.75 degrees
Total Depth Percentage: Generally, between 59-62.5%

Summing up

Are you looking to buy lab grown diamonds of exceptional proportions and performance? If yes, you’re in luck with the vast collection of lab-manufactured diamonds offered by Grown Diamond Corporation.

FAQ

Question: What are the diamond proportions to consider when buying lab-grown diamonds?

Answer: When buying manufactured or cultured diamonds, consider the table percentage, crown angle, pavilion angle, and total depth percentage. These measurements determine how well light interacts with the diamond.

Question: Do lab-grown diamonds and natural diamonds have the same proportion standards?

Answer: Yes, lab-grown diamonds have the same proportion standards as natural diamonds, as the physical, chemical, and optical properties of both types of diamonds are the same.

Question: How do diamond proportions affect their pricing?

Answer: Diamonds with ideal proportions can have a high price because they display optimal brilliance and fire. Well-proportioned diamonds effectively utilize the rough diamond material. This means smaller, well-cut diamonds with ideal proportions may appear more brilliant and even larger than a poorly cut diamond.

Question: How do proportions differ between diamond shapes?

Answer: Each diamond shape has its own optimal proportion range; for example, round brilliants have the most precisely defined ideal proportions, while fancy shapes like oval, pear, and emerald cuts have different proportion guidelines that balance their unique features.

Question: Are the proportions of lab-grown diamonds easier to control than natural diamonds?

Answer: Yes, lab-grown diamond proportions can be controlled more easily than natural diamonds, because cultured diamonds aren't constrained by the natural shape of rough diamond crystals.

{"AutoID":177,"DateCreation":"\/Date(1744605586787)\/","DateModified":"\/Date(1745321152223)\/","CreatedBy":null,"ModifiedBy":"Rahul Bohra ","RecordStatus":"A","Title":"Why Lab Grown Diamonds Proportions Matter","SubTitle":null,"Description":"\u003cp dir=\"ltr\"\u003eWhen selecting the best lab-grown diamonds, most people focus on the \u003ca href=\"https://www.growndiamondcorp.com/blog/the-4cs-of-diamond-grading-all-you-need-to-know/\"\u003e4Cs of diamonds\u003c/a\u003e \u0026mdash; cut, color, clarity, and carat weight. These factors are important, but there\u0026rsquo;s one more critical factor that people often don\u0026rsquo;t talk about. Diamond proportions.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eIn this blog, we take a deep dive into lab grown diamond proportions and why they matter so much, and why you must consider diamond cut and diamond proportions when buying diamonds.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eThe Science Behind Lab Grown Diamond Proportions\u003c/strong\u003e\u003c/h2\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eBefore we get into the details, what is diamond proportion? Diamond proportion refers to the various measurements of a diamond, for instance, the table size, crown angle, pavilion depth, and total depth. These measurements determine how light interacts with the diamond and how the diamond performs under different lighting.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eWhen a lab-grown diamond is cut with ideal proportions, light enters through the top, bounces around inside, and reflects back to the viewer\u0026#39;s eye. This process creates a sparkle in the \u003ca href=\"https://www.growndiamondcorp.com/\"\u003emanufactured diamond\u003c/a\u003e. If the proportions are too deep or too shallow, light escapes through the sides or bottom, resulting in a dull, lifeless appearance.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eLab-grown diamonds, manufactured diamonds, or \u003ca href=\"https://www.growndiamondcorp.com/blog/what-are-cultured-diamonds-and-should-you-buy-them/\"\u003ecultured diamonds\u003c/a\u003e have the same physical, chemical, and optical properties as natural diamonds. They\u0026#39;re created in controlled laboratory environments that replicate the natural diamond-growing process.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eJust like natural diamonds, the proportions of \u003ca href=\"https://www.growndiamondcorp.com/lab-grown-diamonds/\"\u003elab-grown diamonds\u003c/a\u003e have an impact on their brilliance and fire. The advantage of lab-grown diamonds is that cutters often have more flexibility to prioritize ideal proportions since they\u0026#39;re not constrained by trying to maximize carat weight from a natural rough diamond.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eThe Importance of Diamond Cut in Diamond Proportions\u003c/strong\u003e\u003c/h2\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eDiamond cut grades are extremely important and are influenced by proportions. \u003ca href=\"https://www.growndiamondcorp.com/blog/which-diamond-cut-has-the-most-sparkle/\"\u003eDiamond cut\u003c/a\u003e grades range from Excellent to Poor. Let\u0026rsquo;s look at different diamond cut grades in brief.\u003c/p\u003e\r\n\r\n\u003cul dir=\"ltr\"\u003e\r\n\t\u003cli\u003e\u003cstrong\u003eExcellent: \u003c/strong\u003eReflects almost all light that enters the diamond and offers maximum brilliance.\u003c/li\u003e\r\n\t\u003cli\u003e\u003cstrong\u003eVery Good: \u003c/strong\u003eReflects most light that enters the lab-grown diamond.\u003c/li\u003e\r\n\t\u003cli\u003e\u003cstrong\u003eGood: \u003c/strong\u003eReflects a good amount of light.\u003c/li\u003e\r\n\t\u003cli\u003e\u003cstrong\u003eFair: \u003c/strong\u003eReflects some light of the cultured diamond.\u003c/li\u003e\r\n\t\u003cli\u003e\u003cstrong\u003ePoor: \u003c/strong\u003eReflects minimal light.\u003c/li\u003e\r\n\u003c/ul\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eHow do Diamond Proportions Vary for Different Diamond Shapes?\u003c/strong\u003e\u003c/h2\u003e\r\n\r\n\u003ctable\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eRound brilliant\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eIt has the most precise ideal proportions with maximum light return\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003ePrincess cut\u0026nbsp;\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eSquare or rectangle with pointed corners, this diamond cut has a depth of 65 to 75%\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eOval cut\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eThis elongated diamond appears larger than round diamonds of the same carat weight\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eCushion cut\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eSquare or rectangle with rounded corners, it displays the best \u003ca href=\"https://www.growndiamondcorp.com/blog/everything-you-need-to-know-about-diamond-fire/\"\u003ediamond fire\u003c/a\u003e\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eEmerald cut\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eThis lab-grown diamond has step-cut facets and displays brilliance\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003ePear shape\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eTeardrop shaped, this diamond cut has round and marquise cut features\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eRadiant cut\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\t\u003ctd\u003e\r\n\t\t\t\u003cp dir=\"ltr\"\u003eSquare or rectangle with trimmed corners, this diamond displays brilliance\u003c/p\u003e\r\n\t\t\t\u003c/td\u003e\r\n\t\t\u003c/tr\u003e\r\n\t\u003c/tbody\u003e\r\n\u003c/table\u003e\r\n\r\n\u003cp\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003ch2\u003e\u003cstrong\u003eHow to choose well-proportioned lab-grown diamonds?\u003c/strong\u003e\u003c/h2\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eWhen looking for well-proportioned natural or lab-grown diamonds, consider these key measurements:\u003c/p\u003e\r\n\r\n\u003cul\u003e\r\n\t\u003cli dir=\"ltr\"\u003e\r\n\t\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTable Percentage: \u003c/strong\u003eIdeally between 53-58% for brilliant round cuts\u003c/p\u003e\r\n\t\u003c/li\u003e\r\n\t\u003cli dir=\"ltr\"\u003e\r\n\t\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCrown Angle: \u003c/strong\u003eTypically, 34-35 degrees for maximum brilliance\u003c/p\u003e\r\n\t\u003c/li\u003e\r\n\t\u003cli dir=\"ltr\"\u003e\r\n\t\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePavilion Angle: \u003c/strong\u003eOptimally around 40.75 degrees\u003c/p\u003e\r\n\t\u003c/li\u003e\r\n\t\u003cli dir=\"ltr\"\u003e\r\n\t\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTotal Depth Percentage: \u003c/strong\u003eGenerally, between 59-62.5%\u003c/p\u003e\r\n\t\u003c/li\u003e\r\n\u003c/ul\u003e\r\n\r\n\u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eSumming up\u003c/strong\u003e\u003c/h2\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003eAre you looking to buy lab grown diamonds of exceptional proportions and performance? If yes, you\u0026rsquo;re in luck with the vast collection of lab-manufactured diamonds offered by \u003ca href=\"https://www.growndiamondcorp.com\"\u003eGrown Diamond Corporation\u003c/a\u003e.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003ch3 dir=\"ltr\"\u003eFAQ\u003c/h3\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eQuestion: What are the diamond proportions to consider when buying lab-grown diamonds?\u003c/strong\u003e\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnswer:\u0026nbsp;\u003c/strong\u003eWhen buying manufactured or cultured diamonds, consider the table percentage, crown angle, pavilion angle, and total depth percentage. These measurements determine how well light interacts with the diamond.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eQuestion: Do lab-grown diamonds and natural diamonds have the same proportion standards?\u003c/strong\u003e\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnswer:\u0026nbsp;\u003c/strong\u003eYes, lab-grown diamonds have the same proportion standards as natural diamonds, as the physical, chemical, and optical properties of both types of diamonds are the same.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eQuestion: How do diamond proportions affect their pricing?\u003c/strong\u003e\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnswer:\u0026nbsp;\u003c/strong\u003eDiamonds with ideal proportions can have a high price because they display optimal brilliance and fire. Well-proportioned diamonds effectively utilize the rough diamond material. This means smaller, well-cut diamonds with ideal proportions may appear more brilliant and even larger than a poorly cut diamond.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eQuestion: How do proportions differ between diamond shapes?\u003c/strong\u003e\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnswer:\u0026nbsp;\u003c/strong\u003eEach \u003ca href=\"https://www.growndiamondcorp.com/diamond-shapes/\"\u003ediamond shape\u003c/a\u003e has its own optimal proportion range; for example, round brilliants have the most precisely defined ideal proportions, while fancy shapes like \u003ca href=\"https://www.growndiamondcorp.com/oval-cut-diamonds/\"\u003eoval\u003c/a\u003e, \u003ca href=\"https://www.growndiamondcorp.com/pear-cut-diamonds/\"\u003epear\u003c/a\u003e, and \u003ca href=\"https://www.growndiamondcorp.com/emerald-cut-diamonds/\"\u003eemerald cuts\u003c/a\u003e have different proportion guidelines that balance their unique features.\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u0026nbsp;\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eQuestion:\u0026nbsp;Are the proportions of lab-grown diamonds easier to control than natural diamonds?\u003c/strong\u003e\u003c/p\u003e\r\n\r\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnswer:\u0026nbsp;\u003c/strong\u003eYes, lab-grown diamond proportions can be controlled more easily than natural diamonds, because cultured diamonds aren\u0026#39;t constrained by the natural shape of rough diamond crystals.\u003c/p\u003e\r\n","FromDate":null,"ToDate":null,"Image_Url":"why-lab-grown-diamonds-proportions-matter.jpg","Image_Alt":null,"KeyWords":"diamond cut, diamond depth, diamond shapes","MetaDescription":"?Discover how precise proportions enhance lab-grown diamonds\u0027 brilliance and fire. Learn why cut quality is crucial for maximizing sparkle and beauty.?","MetaTitle":"Why Lab Grown Diamonds Proportions Matter","CanonicalLink":null,"MetaContent":"\u003cscript type=\"application/ld+json\"\u003e\r\n{\r\n \"@context\": \"https://schema.org\",\r\n \"@type\": \"FAQPage\",\r\n \"mainEntity\": [{\r\n \"@type\": \"Question\",\r\n \"name\": \"What are the diamond proportions to consider when buying lab-grown diamonds?\",\r\n \"acceptedAnswer\": {\r\n \"@type\": \"Answer\",\r\n \"text\": \"When buying manufactured or cultured diamonds, consider the table percentage, crown angle, pavilion angle, and total depth percentage. 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