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Princess|Lab Grown|IGI

1.51ct G SI2 Princess Lab Grown Diamond

ID • G/SI2 • IGI LG512220552

Shape and cutting style on the report: Princess cut

Certificate IGI LG512220552

Diamond specifications and retailer prices

From $980 USD
As of November 4, 2026
Save $1,856 USD (65%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,836 USD at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.51ct lab-grown princess diamond

This 1.51ct lab-grown princess sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512220552 or 512220552. Listed at 10 retailers as of November 4, 2026, with prices from $980 to $2,836, a $1,856 spread on the same certified stone. NZ Jewellers lists it at $2,836. 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

1.51
Carat
G
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512220552
Dimensions6.46 × 6.27 × 4.24 mm
L/W Ratio1.03
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
6.46 mm6.27 mm1.51 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512220552
Side View
Table 69.5%Crown 42.9°Girdle: MediumPavilion 37.5°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,836 USD|Low: $980 USD|High: $4,926 USD|Avg: $2,219 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4$980 USD
Retailer 5$1,304 USD
Retailer 8$1,419 USD
Retailer 6$1,513 USD
Retailer 2$2,099 USD
Retailer 7$2,393 USD
NZ Jewellers$2,836 USD
Retailer 3$4,847 USD

46 data points across 8 retailers

10 retailers$980 USD to $2,836 USD

B+
Cheapest Retailer
-
$980 USD
B
Retailer 2
-
$1,304 USD
View
B
Retailer 3
-
$1,419 USD
View
Retailer 4
-
$1,513 USD
View
Price last confirmed 25 days ago
B
Retailer 5
-
$1,513 USD
View
B
Retailer 6
-
$2,099 USD
View
B
Retailer 7
-
$2,393 USD
View
B
Retailer 8
-
$2,820 USD
View
Most Expensive
B
NZ Jewellers
b72a46bb-8494-4d8e-9646-6011191bf4b4 · Nov 6
$2,836 USD
View
8 more retailers have this diamond
Prices start from $980 USDSave up to $1,856 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.

B+
1.51ct Princess
$980 USD