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Round|Lab Grown|IGI

1.28ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG788620074

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788620074

Diamond specifications and retailer prices

From €153 EUR
As of November 5, 2026
Save €735 EUR (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €888 EUR at MOH London · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG788620074 or 788620074. Listed at 15 retailers as of November 2, 2026, with prices from €153 to €888, a €735 spread on the same certified stone. MOH London lists it at €888. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788620074
Dimensions7.06 × 7.03 × 4.18 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.06 mm7.03 mm1.28 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788620074
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.3%

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: €888 EUR|Low: €153 EUR|High: €899 EUR|Avg: €440 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7€153 EUR
Retailer 8€190 EUR
Retailer 2€326 EUR
Retailer 4€334 EUR
Retailer 9€339 EUR
Retailer 5€412 EUR
Retailer 10€416 EUR
Retailer 6€483 EUR
Retailer 3€564 EUR
MOH London€888 EUR

42 data points across 10 retailers

15 retailers€153 EUR to €888 EUR

A
Cheapest Retailer
-
€153 EUR
A
Retailer 2
-
€177 EUR
View
A
Retailer 3
-
€190 EUR
View
Retailer 4
-
€190 EUR
View
Price last confirmed 13 days ago
A
Retailer 5
-
€326 EUR
View
A
Retailer 6
-
€334 EUR
View
B+
Retailer 7
-
€339 EUR
View
A
Retailer 8
-
€366 EUR
View
A
Retailer 9
-
€412 EUR
View
B+
Retailer 10
-
€416 EUR
View
B+
Retailer 11
-
€483 EUR
View
B+
Retailer 12
-
€564 EUR
View
B
Retailer 13
-
€611 EUR
View
B+
Retailer 14
-
€659 EUR
View
Most Expensive
B
MOH London
LG788620074 · Nov 2
€888 EUR
£781 GBP
View
14 more retailers have this diamond
Prices start from €153 EURSave up to €735 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
€153 EUR