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Round|Lab Grown|IGI

1.28ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG757504797

Shape and cutting style on the report: Round brilliant

Certificate IGI LG757504797

Diamond specifications and retailer prices

From €371 EUR
As of November 5, 2026
Save €619 EUR (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €990 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG757504797 or 757504797. Listed at 6 retailers as of November 5, 2026, with prices from €371 to €990, a €619 spread on the same certified stone. MOH London lists it at €990. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757504797
Dimensions7.02 × 6.98 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.02 mm6.98 mm1.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757504797
Side View
Table 59.0%Crown 33.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: €990 EUR|Low: €346 EUR|High: €996 EUR|Avg: €476 EUR|+0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6€357 EUR
Retailer 7€371 EUR
Retailer 4€372 EUR
Retailer 2€381 EUR
Retailer 5€423 EUR
Retailer 3€434 EUR
MOH London€990 EUR

29 data points across 7 retailers

6 retailers€371 EUR to €990 EUR

A
Cheapest Retailer
-
€371 EUR
A
Retailer 2
-
€372 EUR
View
A
Retailer 3
-
€381 EUR
View
Retailer 4
-
€423 EUR
View
Price last confirmed 30 days ago
B+
Retailer 5
-
€434 EUR
View
Most Expensive
B
MOH London
LG757504797 · Nov 5
€990 EUR
£875 GBP
View
5 more retailers have this diamond
Prices start from €371 EURSave up to €619 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
1.28ct Round
€371 EUR