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Round|Lab Grown|IGI

1.78ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG442067187

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442067187

Diamond specifications and retailer prices

From €895 EUR
$1,000 USD
As of October 31, 2026
Save €3,689 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,585 EUR at MOH London · As of October 27, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct 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 LG442067187 or 442067187. Listed at 12 retailers as of October 27, 2026, with prices from €895 to €4,585, a €3,689 spread on the same certified stone. MOH London lists it at €4,585. 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

1.78
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442067187
Dimensions7.83 × 7.86 × 4.70 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.83 mm7.86 mm1.78 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442067187
Side View
Table 60.0%Crown 31.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.8%

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: Oct 31
Current: €4,585 EUR|Low: €895 EUR|High: €4,640 EUR|Avg: €2,105 EUR|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2€895 EUR
Retailer 8€1,229 EUR
Retailer 11€1,336 EUR
Retailer 13€1,376 EUR
Retailer 9€1,425 EUR
Retailer 14€1,425 EUR
Retailer 3€1,580 EUR
Retailer 7€1,871 EUR
Retailer 5€1,959 EUR
Retailer 10€2,251 EUR
Retailer 4€2,657 EUR
Retailer 12€2,671 EUR
Retailer 6€4,078 EUR
MOH London€4,585 EUR

35 data points across 14 retailers

12 retailers€895 EUR to €4,585 EUR

A
Cheapest Retailer
-
€895 EUR
$1,000 USD
B+
Retailer 2
-
€1,229 EUR
$1,373 USD
View
B+
Retailer 3
-
€1,336 EUR
$1,493 USD
View
B+
Retailer 4
-
€1,376 EUR
$1,537 USD
View
Final sale: no returns
Retailer 5
-
€1,425 EUR
$1,592 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,425 EUR
$1,592 USD
View
B+
Retailer 7
-
€1,580 EUR
$1,765 USD
View
B+
Retailer 8
-
€1,871 EUR
£1,646 GBP
View
B
Retailer 9
-
€2,251 EUR
$2,515 USD
View
B
Retailer 10
-
€2,657 EUR
$2,968 USD
View
B
Retailer 11
-
€2,671 EUR
$2,984 USD
View
Most Expensive
B
MOH London
LG442067187 · Oct 27
€4,585 EUR
£4,033 GBP
View
11 more retailers have this diamond
Prices start from €895 EURSave up to €3,689 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
1.78ct Round
€895 EUR