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Princess|Lab Grown|IGI

1.51ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG727512311

Shape and cutting style on the report: Princess cut

Certificate IGI LG727512311

Diamond specifications and retailer prices

From €1,137 EUR
$1,270 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: €1,137 EUR at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG727512311 or 727512311. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.3°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727512311
Dimensions6.29 × 6.09 × 4.26 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.29 mm6.09 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727512311
Side View
Table 71.0%Crown 47.3°Girdle: MED-STKPavilion 36.7°Culet: NoneDepth 70.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: €1,137 EUR|Low: €152 EUR|High: €1,289 EUR|Avg: €611 EUR|-11.8%
Brilliant Earth
Retailer 2
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April 14, 2026
Retailer 5€198 EUR
Retailer 3€211 EUR
Retailer 11€229 EUR
Retailer 6€363 EUR
Retailer 12€473 EUR
Retailer 9€483 EUR
Retailer 2€592 EUR
Retailer 10€676 EUR
Retailer 7€728 EUR
Retailer 4€816 EUR
Retailer 8€863 EUR
Brilliant Earth€1,137 EUR

49 data points across 12 retailers

1 retailer

B
Brilliant Earth
15636184A · Oct 29
€1,137 EUR
$1,270 USD
View

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
€1,137 EUR