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1.55ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG522230563

Shape and cutting style on the report: Round brilliant

Certificate IGI LG522230563

Diamond specifications and retailer prices

From €405 EUR
$453 USD
As of November 1, 2026
Save €546 EUR (57%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €951 EUR at MOH London · As of October 29, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522230563 or 522230563. Listed at 3 retailers as of October 29, 2026, with prices from €405 to €951, a €546 spread on the same certified stone. MOH London lists it at €951. 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
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522230563
Dimensions7.40 × 7.37 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
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 Faint Blue
Top View
7.40 mm7.37 mm1.55 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522230563
Side View
Table 56.0%Crown 35.9°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €951 EUR|Low: €383 EUR|High: €958 EUR|Avg: €588 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
October 18, 2026
Retailer 2€405 EUR
Retailer 3€409 EUR
MOH London€951 EUR

8 data points across 3 retailers

3 retailers€405 EUR to €951 EUR

B+
Cheapest Retailer
-
€405 EUR
$453 USD
A
Retailer 2
-
€409 EUR
$457 USD
View
Most Expensive
B+
MOH London
LG522230563 · Oct 29
€951 EUR
£837 GBP
View
2 more retailers have this diamond
Prices start from €405 EURSave up to €546 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
€405 EUR