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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG783641986

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783641986

Diamond specifications and retailer prices

From €245 EUR
As of November 6, 2026
Save €734 EUR (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €979 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783641986 or 783641986. Listed at 19 retailers as of November 5, 2026, with prices from €245 to €979, a €734 spread on the same certified stone. MOH London lists it at €979. 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

1.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783641986
Dimensions7.42 × 7.38 × 4.59 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
7.42 mm7.38 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783641986
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €979 EUR|Low: €198 EUR|High: €992 EUR|Avg: €520 EUR|-0.2%
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 11€198 EUR
Retailer 3€245 EUR
Retailer 10€245 EUR
Retailer 12€330 EUR
Retailer 2€403 EUR
Retailer 5€450 EUR
Retailer 4€472 EUR
Retailer 9€496 EUR
Retailer 7€677 EUR
Retailer 8€789 EUR
Retailer 6€944 EUR
MOH London€979 EUR

43 data points across 12 retailers

19 retailers€245 EUR to €979 EUR

Retailer 1
-
€198 EUR
Price last confirmed 27 days ago
Retailer 2
-
€229 EUR
View
Price last confirmed 24 days ago
Retailer 3
-
€245 EUR
View
Price last confirmed 12 days ago
Retailer 4
-
€245 EUR
View
Price last confirmed 35 days ago
A
Retailer 5
-
€245 EUR
View
B+
Retailer 6
-
€330 EUR
View
A
Retailer 7
-
€403 EUR
View
A
Retailer 8
-
€414 EUR
View
A
Retailer 9
-
€450 EUR
View
A
Retailer 10
-
€472 EUR
View
B+
Retailer 11
-
€496 EUR
View
B+
Retailer 12
-
€647 EUR
View
B+
Retailer 13
-
€677 EUR
View
Retailer 14
-
€787 EUR
View
Price last confirmed 30 days ago
B
Retailer 15
-
€789 EUR
View
B
Retailer 16
-
€792 EUR
View
B
Retailer 17
-
€935 EUR
View
B
Retailer 18
-
€944 EUR
View
Most Expensive
B
MOH London
LG783641986 · Nov 5
€979 EUR
£865 GBP
View
18 more retailers have this diamond
Prices start from €245 EURSave up to €734 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
1.55ct Round
€245 EUR