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Round|Lab Grown|IGI

0.51ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG639449053

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639449053

Diamond specifications and retailer prices

From $120 USD
As of November 1, 2026
Save $1,127 USD (90%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,247 USD at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG639449053 or 639449053. Listed at 18 retailers as of November 1, 2026, with prices from $120 to $1,247, a $1,127 spread on the same certified stone. MOH London lists it at $1,247. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639449053
Dimensions5.14 × 5.11 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.14 mm5.11 mm0.51 ctG / IF
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG639449053
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,247 USD|Low: $104 USD|High: $1,262 USD|Avg: $326 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 12$120 USD
Retailer 5$135 USD
Retailer 11$140 USD
Retailer 3$159 USD
Retailer 15$159 USD
Retailer 7$202 USD
Retailer 2$271 USD
Retailer 14$275 USD
Retailer 13$291 USD
Retailer 8$307 USD
Retailer 10$350 USD
Retailer 4$363 USD
Retailer 6$377 USD
Retailer 9$480 USD
MOH London$1,247 USD

42 data points across 15 retailers

18 retailers$120 USD to $1,247 USD

A
Cheapest Retailer
-
$120 USD
A
Retailer 2
-
$135 USD
View
Final sale: no returns
A
Retailer 3
-
$140 USD
View
Retailer 4
-
$159 USD
View
Price last confirmed 8 days ago
A
Retailer 5
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$159 USD
View
A
Retailer 6
-
$202 USD
View
A
Retailer 7
-
$259 USD
View
A
Retailer 8
-
$271 USD
ZAR 4,382 ZAR
View
A
Retailer 9
-
$275 USD
View
A
Retailer 10
-
$291 USD
€277 EUR
View
B+
Retailer 11
-
$307 USD
£242 GBP
View
B+
Retailer 12
-
$350 USD
View
B+
Retailer 13
-
$363 USD
View
B+
Retailer 14
-
$377 USD
View
B+
Retailer 15
-
$452 USD
View
B+
Retailer 16
-
$480 USD
View
B
Retailer 17
-
$537 USD
View
Most Expensive
B
MOH London
LG639449053 · Nov 1
$1,247 USD
£982 GBP
View
17 more retailers have this diamond
Prices start from $120 USDSave up to $1,127 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Round
$120 USD