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Round|Lab Grown|IGI

1.28ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG819612892

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819612892

Diamond specifications and retailer prices

From €154 EUR
As of November 5, 2026
Save €736 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €890 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819612892 or 819612892. Listed at 14 retailers as of November 5, 2026, with prices from €154 to €890, a €736 spread on the same certified stone. MOH London lists it at €890. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819612892
Dimensions6.99 × 6.97 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.99 mm6.97 mm1.28 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819612892
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.2%

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 5
Current: €890 EUR|Low: €148 EUR|High: €904 EUR|Avg: €400 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
November 6, 2026
Retailer 8€154 EUR
Retailer 10€179 EUR
Retailer 3€191 EUR
Retailer 9€191 EUR
Retailer 5€337 EUR
Retailer 11€340 EUR
Retailer 6€392 EUR
Retailer 2€422 EUR
Retailer 4€482 EUR
Retailer 12€614 EUR
Retailer 7€649 EUR
MOH London€890 EUR

46 data points across 12 retailers

14 retailers€154 EUR to €890 EUR

A
Cheapest Retailer
-
€154 EUR
A
Retailer 2
-
€179 EUR
View
Retailer 3
-
€191 EUR
View
Price last confirmed 12 days ago
A
Retailer 4
-
€191 EUR
View
A
Retailer 5
-
€337 EUR
View
B+
Retailer 6
-
€340 EUR
View
A
Retailer 7
-
€392 EUR
View
B+
Retailer 8
-
€405 EUR
View
A
Retailer 9
-
€422 EUR
View
B+
Retailer 10
-
€482 EUR
View
B
Retailer 11
-
€614 EUR
View
B+
Retailer 12
-
€649 EUR
View
B+
Retailer 13
-
€662 EUR
View
Most Expensive
B
MOH London
LG819612892 · Nov 5
€890 EUR
£787 GBP
View
13 more retailers have this diamond
Prices start from €154 EURSave up to €736 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
€154 EUR