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Oval|Lab Grown|IGI

1.28ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG621476577

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG621476577

Diamond specifications and retailer prices

From €150 EUR
As of November 3, 2026
Save €716 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €866 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621476577 or 621476577. Listed at 14 retailers as of November 3, 2026, with prices from €150 to €866, a €716 spread on the same certified stone. MOH London lists it at €866. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621476577
Dimensions9.06 × 6.04 × 3.75 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.06 mm6.04 mm1.28 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621476577
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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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 3
Current: €866 EUR|Low: €150 EUR|High: €878 EUR|Avg: €412 EUR|-0.3%
MOH London
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
November 4, 2026
Retailer 3€150 EUR
Retailer 10€174 EUR
Retailer 13€185 EUR
Retailer 14€185 EUR
Retailer 12€223 EUR
Retailer 8€326 EUR
Retailer 9€329 EUR
Retailer 4€334 EUR
Retailer 7€431 EUR
Retailer 6€478 EUR
Retailer 2€542 EUR
Retailer 15€597 EUR
Retailer 11€631 EUR
Retailer 5€672 EUR
MOH London€866 EUR

38 data points across 15 retailers

14 retailers€150 EUR to €866 EUR

A
Cheapest Retailer
-
€150 EUR
A
Retailer 2
-
€174 EUR
View
Retailer 3
-
€185 EUR
View
Price last confirmed 12 days ago
A
Retailer 4
-
€185 EUR
View
A
Retailer 5
-
€326 EUR
View
A
Retailer 6
-
€329 EUR
View
B+
Retailer 7
-
€334 EUR
View
B+
Retailer 8
-
€431 EUR
View
B+
Retailer 9
-
€478 EUR
View
B+
Retailer 10
-
€542 EUR
View
B+
Retailer 11
-
€597 EUR
View
B
Retailer 12
-
€631 EUR
View
B
Retailer 13
-
€672 EUR
View
Most Expensive
B
MOH London
LG621476577 · Nov 4
€866 EUR
£761 GBP
View
13 more retailers have this diamond
Prices start from €150 EURSave up to €716 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 Oval
€150 EUR