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Princess|Lab Grown|IGI

1.78ct K SI1 Princess Lab Grown Diamond

ID • K/SI1 • IGI LG445039133

Shape and cutting style on the report: Princess cut

Certificate IGI LG445039133

Diamond specifications and retailer prices

From €959 EUR
As of November 6, 2026
Save €2,801 EUR (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €3,760 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.78ct lab-grown princess diamond

This 1.78ct lab-grown princess 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 LG445039133 or 445039133. Listed at 9 retailers as of November 5, 2026, with prices from €959 to €3,760, a €2,801 spread on the same certified stone. MOH London lists it at €3,760. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle43°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445039133
Dimensions6.75 × 6.56 × 4.63 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
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Top View
6.75 mm6.56 mm1.78 ctK / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG445039133
Side View
Table 70.0%Crown 43°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 70.6%

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 6
Current: €3,760 EUR|Low: €959 EUR|High: €3,821 EUR|Avg: €2,066 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 3€959 EUR
Retailer 2€1,265 EUR
Retailer 6€1,609 EUR
Retailer 4€1,771 EUR
Retailer 5€2,255 EUR
MOH London€3,760 EUR

14 data points across 6 retailers

9 retailers€959 EUR to €3,760 EUR

A
Cheapest Retailer
-
€959 EUR
A
Retailer 2
-
€1,042 EUR
View
Retailer 3
-
€1,112 EUR
View
Price last confirmed 25 days ago
B+
Retailer 4
-
€1,112 EUR
View
B+
Retailer 5
-
€1,265 EUR
View
B+
Retailer 6
-
€1,771 EUR
View
B
Retailer 7
-
€2,084 EUR
View
B
Retailer 8
-
€2,255 EUR
View
Most Expensive
B
MOH London
LG445039133 · Nov 5
€3,760 EUR
£3,323 GBP
View
8 more retailers have this diamond
Prices start from €959 EURSave up to €2,801 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 Princess
€959 EUR