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3.51ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG622474286

Shape and cutting style on the report: Round brilliant

Certificate IGI LG622474286

Diamond specifications and retailer prices

From $1,313 NZD
$740 USD
As of October 31, 2026
Save $3,446 NZD (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,759 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 3.51ct lab-grown round diamond

This 3.51ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG622474286 or 622474286. Listed at 10 retailers as of October 29, 2026, with prices from $1,313 to $4,759, a $3,446 spread on the same certified stone. MOH London lists it at $4,759. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622474286
Dimensions9.80 × 9.76 × 5.83 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.80 mm9.76 mm3.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622474286
Side View
Table 62.0%Crown 35.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 59.7%

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: Oct 31
Current: $4,759 NZD|Low: $633 NZD|High: $4,791 NZD|Avg: $2,451 NZD|-0.7%
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 3$633 NZD
Retailer 7$1,129 NZD
Retailer 10$1,134 NZD
Retailer 12$1,313 NZD
Retailer 8$1,751 NZD
Retailer 15$1,758 NZD
Retailer 2$1,767 NZD
Retailer 5$1,833 NZD
Retailer 11$2,926 NZD
Retailer 9$2,983 NZD
Retailer 4$3,413 NZD
Retailer 14$3,689 NZD
Retailer 6$3,855 NZD
Retailer 13$4,175 NZD
MOH London$4,759 NZD

24 data points across 15 retailers

10 retailers$1,313 NZD to $4,759 NZD

Retailer 1
-
$1,134 NZD
$639 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$1,313 NZD
$740 USD
View
A
Retailer 3
-
$1,751 NZD
£777 GBP
View
B+
Retailer 4
-
$1,758 NZD
$991 USD
View
A
Retailer 5
-
$1,767 NZD
£784 GBP
View
B
Retailer 6
-
$2,926 NZD
$1,649 USD
View
B
Retailer 7
-
$2,983 NZD
$1,681 USD
View
B
Retailer 8
-
$3,689 NZD
$2,079 USD
View
B
Retailer 9
-
$4,175 NZD
$2,353 USD
View
Most Expensive
B
MOH London
LG622474286 · Oct 29
$4,759 NZD
£2,112 GBP
View
9 more retailers have this diamond
Prices start from $1,313 NZDSave up to $3,446 NZD

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
3.51ct Round
$1,313 NZD