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Princess|Lab Grown|IGI

1.28ct G SI1 Princess Lab Grown Diamond

EX • G/SI1 • IGI LG499115127

Certificate IGI LG499115127

Diamond specifications and retailer prices

From €1,278 EUR
$1,428 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: €1,278 EUR at B2C Jewels
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 B2C Jewels

About this 1.28ct lab-grown princess diamond

This 1.28ct lab-grown princess sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499115127 or 499115127. Listed at a single retailer as of November 1, 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

1.28
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG499115127
Dimensions5.79 × 5.71 mm
L/W Ratio1.01
Top View
5.79 mm5.71 mm1.28 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499115127
Side View
Table 66.5%CrownGirdlePavilionCulet: NoneDepth 74.4%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 1
Current: €1,278 EUR|Low: €1,224 EUR|High: €2,060 EUR|Avg: €1,535 EUR|-37.9%
September 23, 2026
B2C Jewels€1,278 EUR

4 data points across 1 retailer

1 retailer

C
B2C Jewels
19522942 · Nov 1
€1,278 EUR
$1,428 USD
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C
1.28ct Princess
€1,278 EUR