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Round|Lab Grown|IGI

1.25ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG805675956

Shape and cutting style on the report: Round brilliant

Certificate IGI LG805675956

Diamond specifications and retailer prices

From €316 EUR
As of November 5, 2026
Save €528 EUR (63%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €844 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round 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 LG805675956 or 805675956. Listed at 8 retailers as of November 4, 2026, with prices from €316 to €844, a €528 spread on the same certified stone. MOH London lists it at €844. 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

1.25
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805675956
Dimensions6.92 × 6.88 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.92 mm6.88 mm1.25 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805675956
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.4%

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: €844 EUR|Low: €303 EUR|High: €851 EUR|Avg: €465 EUR|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2€316 EUR
Retailer 4€323 EUR
Retailer 7€326 EUR
Retailer 6€354 EUR
Retailer 3€356 EUR
Retailer 8€535 EUR
Retailer 5€615 EUR
MOH London€844 EUR

19 data points across 8 retailers

8 retailers€316 EUR to €844 EUR

A
Cheapest Retailer
-
€316 EUR
A
Retailer 2
-
€323 EUR
View
B+
Retailer 3
-
€326 EUR
View
A
Retailer 4
-
€354 EUR
View
A
Retailer 5
-
€356 EUR
View
B
Retailer 6
-
€535 EUR
View
B
Retailer 7
-
€615 EUR
View
Most Expensive
B
MOH London
LG805675956 · Nov 4
€844 EUR
£746 GBP
View
7 more retailers have this diamond
Prices start from €316 EURSave up to €528 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
1.25ct Round
€316 EUR