CaratHunter
Plans
Princess|Lab Grown|IGI

1.51ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG648452613

Shape and cutting style on the report: Princess cut

Certificate IGI LG648452613

Diamond specifications and retailer prices

From €171 EUR
$190 USD
As of October 30, 2026
Save €881 EUR (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,051 EUR 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 top-tier cut grade and certified by IGI LG648452613 or 648452613. Listed at 18 retailers as of October 29, 2026, with prices from €171 to €1,051, a €881 spread on the same certified stone. Brilliant Earth lists it at €1,051. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648452613
Dimensions6.36 × 6.35 × 4.15 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.36 mm6.35 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648452613
Side View
Table 71.0%Crown 40.5°Girdle: Slightly ThickPavilion 36.1°Culet: NoneDepth 65.4%

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 30
Current: €1,051 EUR|Low: €164 EUR|High: €1,078 EUR|Avg: €497 EUR
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
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 10€171 EUR
Retailer 6€190 EUR
Retailer 4€198 EUR
Retailer 12€211 EUR
Retailer 16€211 EUR
Retailer 2€272 EUR
Retailer 5€289 EUR
Retailer 9€385 EUR
Retailer 11€395 EUR
Retailer 8€444 EUR
Retailer 14€680 EUR
Retailer 15€683 EUR
Retailer 3€818 EUR
Retailer 13€994 EUR
Retailer 7€1,043 EUR
Brilliant Earth€1,051 EUR

38 data points across 16 retailers

18 retailers€171 EUR to €1,051 EUR

A
Cheapest Retailer
-
€171 EUR
$190 USD
A
Retailer 2
-
€190 EUR
$211 USD
View
Final sale: no returns
A
Retailer 3
-
€198 EUR
$220 USD
View
A
Retailer 4
-
€211 EUR
$235 USD
View
A
Retailer 5
-
€211 EUR
$235 USD
View
A
Retailer 6
-
€272 EUR
£238 GBP
View
B+
Retailer 7
-
€289 EUR
$322 USD
View
A
Retailer 8
-
€385 EUR
£337 GBP
View
A
Retailer 9
-
€395 EUR
View
B+
Retailer 10
-
€405 EUR
$451 USD
View
B+
Retailer 11
-
€444 EUR
$494 USD
View
B
Retailer 12
-
€680 EUR
$757 USD
View
B
Retailer 13
-
€683 EUR
$760 USD
View
B
Retailer 14
-
€728 EUR
$811 USD
View
B
Retailer 15
-
€818 EUR
$910 USD
View
B
Retailer 16
-
€994 EUR
£871 GBP
View
B
Retailer 17
-
€1,043 EUR
$1,161 USD
View
Most Expensive
B
Brilliant Earth
16229883A · Oct 29
€1,051 EUR
$1,170 USD
View
17 more retailers have this diamond
Prices start from €171 EURSave up to €881 EUR

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
€171 EUR