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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 $171 AUD
As of November 1, 2026
Save $1,607 AUD (90%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,778 AUD 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 $171 to $1,778, a $1,607 spread on the same certified stone. MOH London lists it at $1,778. 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
Colour
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

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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: $1,778 AUD|Low: $163 AUD|High: $1,800 AUD|Avg: $468 AUD
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$171 AUD
Retailer 5$192 AUD
Retailer 11$200 AUD
Retailer 3$227 AUD
Retailer 15$227 AUD
Retailer 7$288 AUD
Retailer 2$386 AUD
Retailer 14$392 AUD
Retailer 13$413 AUD
Retailer 8$438 AUD
Retailer 10$499 AUD
Retailer 4$517 AUD
Retailer 6$537 AUD
Retailer 9$684 AUD
MOH London$1,778 AUD

40 data points across 15 retailers

18 retailers$171 AUD to $1,778 AUD

A
Cheapest Retailer
-
$171 AUD
A
Retailer 2
-
$200 AUD
View
Retailer 3
-
$227 AUD
View
Price last confirmed 10 days ago
Retailer 4
-
$227 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$288 AUD
View
A
Retailer 6
-
$369 AUD
View
A
Retailer 7
-
$386 AUD
View
A
Retailer 8
-
$392 AUD
View
A
Retailer 9
-
$413 AUD
View
B+
Retailer 10
-
$438 AUD
View
B+
Retailer 11
-
$499 AUD
View
B+
Retailer 12
-
$517 AUD
View
B+
Retailer 13
-
$537 AUD
View
B+
Retailer 14
-
$556 AUD
View
B+
Retailer 15
-
$644 AUD
View
B+
Retailer 16
-
$684 AUD
View
B
Retailer 17
-
$765 AUD
View
Most Expensive
B
MOH London
LG639449053 · Nov 1
$1,778 AUD
£982 GBP
View
17 more retailers have this diamond
Prices start from $171 AUDSave up to $1,607 AUD

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
$171 AUD