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Round|Lab Grown|IGI

1.56ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG494173834

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494173834

Diamond specifications and retailer prices

From €770 EUR
$860 USD
As of October 31, 2026
Save €3,276 EUR (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €4,046 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.56ct lab-grown round diamond

This 1.56ct 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 LG494173834 or 494173834. Listed at 11 retailers as of October 29, 2026, with prices from €770 to €4,046, a €3,276 spread on the same certified stone. MOH London lists it at €4,046. 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

1.56
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494173834
Dimensions7.62 × 7.57 × 4.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.62 mm7.57 mm1.56 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494173834
Side View
Table 59.0%Crown 32.9°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €4,046 EUR|Low: €770 EUR|High: €4,073 EUR|Avg: €1,827 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2€770 EUR
Retailer 3€1,079 EUR
Retailer 6€1,209 EUR
Retailer 4€1,252 EUR
Retailer 7€1,405 EUR
Retailer 9€1,773 EUR
Retailer 5€1,986 EUR
Retailer 8€2,400 EUR
MOH London€4,046 EUR

13 data points across 9 retailers

11 retailers€770 EUR to €4,046 EUR

A
Cheapest Retailer
-
€770 EUR
$860 USD
B+
Retailer 2
-
€1,079 EUR
$1,206 USD
View
B+
Retailer 3
-
€1,175 EUR
$1,313 USD
View
B+
Retailer 4
-
€1,209 EUR
$1,351 USD
View
Final sale: no returns
Retailer 5
-
€1,252 EUR
$1,399 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
€1,252 EUR
$1,399 USD
View
B+
Retailer 7
-
€1,405 EUR
$1,570 USD
View
B
Retailer 8
-
€1,986 EUR
$2,219 USD
View
B
Retailer 9
-
€2,348 EUR
$2,623 USD
View
B
Retailer 10
-
€2,400 EUR
$2,681 USD
View
Most Expensive
B
MOH London
LG494173834 · Oct 29
€4,046 EUR
£3,559 GBP
View
10 more retailers have this diamond
Prices start from €770 EURSave up to €3,276 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
1.56ct Round
€770 EUR