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Round|Lab Grown|IGI

1.55ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG451057060

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057060

Diamond specifications and retailer prices

From €859 EUR
As of November 5, 2026
Save €2,512 EUR (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €3,371 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057060 or 451057060. Listed at 9 retailers as of November 5, 2026, with prices from €859 to €3,371, a €2,512 spread on the same certified stone. MOH London lists it at €3,371. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057060
Dimensions7.40 × 7.42 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.40 mm7.42 mm1.55 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057060
Side View
Table 56.0%Crown 34.9°GirdlePavilion 40.8°Culet: NoneDepth 62.1%

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: €3,371 EUR|Low: €859 EUR|High: €3,421 EUR|Avg: €1,794 EUR|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4€859 EUR
Retailer 5€996 EUR
Retailer 2€1,154 EUR
Retailer 7€1,461 EUR
Retailer 6€1,593 EUR
Retailer 3€2,147 EUR
MOH London€3,371 EUR

15 data points across 7 retailers

9 retailers€859 EUR to €3,371 EUR

A
Cheapest Retailer
-
€859 EUR
A
Retailer 2
-
€935 EUR
View
Retailer 3
-
€996 EUR
View
Price last confirmed 25 days ago
B+
Retailer 4
-
€996 EUR
View
B+
Retailer 5
-
€1,154 EUR
View
B
Retailer 6
-
€1,593 EUR
View
B
Retailer 7
-
€2,147 EUR
View
B
Retailer 8
-
€2,801 EUR
View
Most Expensive
B
MOH London
LG451057060 · Nov 5
€3,371 EUR
£2,979 GBP
View
8 more retailers have this diamond
Prices start from €859 EURSave up to €2,512 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
€859 EUR