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Princess|Lab Grown|IGI

1.51ct E SI1 Princess Lab Grown Diamond

GD • E/SI1 • IGI LG737515680

Shape and cutting style on the report: Princess cut

Certificate IGI LG737515680

Diamond specifications and retailer prices

From $181 USD
As of October 27, 2026
Save $899 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,080 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG737515680 or 737515680. Listed at 19 retailers as of October 27, 2026, with prices from $181 to $1,080, a $899 spread on the same certified stone. Brilliant Earth lists it at $1,080. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737515680
Dimensions6.29 × 6.21 × 4.44 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.29 mm6.21 mm1.51 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737515680
Side View
Table 70.0%Crown 39.3°Girdle: Slightly ThickPavilion 38.6°Culet: NoneDepth 71.5%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: $1,080 USD|Low: $115 USD|High: $1,120 USD|Avg: $544 USD|-3.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 5$115 USD
Retailer 11$181 USD
Retailer 4$200 USD
Retailer 6$386 USD
Retailer 13$397 USD
Retailer 2$403 USD
Retailer 8$405 USD
Retailer 10$556 USD
Retailer 12$558 USD
Retailer 3$733 USD
Retailer 9$895 USD
Retailer 7$1,053 USD
Brilliant Earth$1,080 USD

43 data points across 13 retailers

19 retailers$181 USD to $1,080 USD

A
Cheapest Retailer
-
$181 USD
B+
Retailer 2
-
$200 USD
View
Final sale: no returns
B+
Retailer 3
-
$210 USD
View
B+
Retailer 4
-
$224 USD
View
B+
Retailer 5
-
$224 USD
View
B+
Retailer 6
-
$386 USD
€368 EUR
View
B
Retailer 7
-
$397 USD
View
B+
Retailer 8
-
$403 USD
£317 GBP
View
B+
Retailer 9
-
$405 USD
£319 GBP
View
B+
Retailer 10
-
$447 USD
View
B
Retailer 11
-
$556 USD
View
B
Retailer 12
-
$558 USD
View
B
Retailer 13
-
$720 USD
View
B
Retailer 14
-
$733 USD
SGD 990 SGD
View
B
Retailer 15
-
$895 USD
View
Retailer 16
-
$900 USD
View
Price last confirmed 8 days ago
Retailer 17
-
$911 USD
View
Price last confirmed 81 days ago
B
Retailer 18
-
$1,053 USD
£829 GBP
View
Most Expensive
B
Brilliant Earth
18694536A · Oct 29
$1,080 USD
View
18 more retailers have this diamond
Prices start from $181 USDSave up to $899 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
1.51ct Princess
$181 USD