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Marquise|Lab Grown|IGI

1.80ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG823670043

Certificate IGI LG823670043

Diamond specifications and retailer prices

From €1,486 EUR
$1,660 USD
As of October 30, 2026
Save €2,703 EUR (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €4,189 EUR at Kay Jewelers · As of November 1, 2026
View at Kay Jewelers

About this 1.8ct lab-grown marquise diamond

This 1.8ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823670043 or 823670043. Listed at 4 retailers as of October 30, 2026, with prices from €1,486 to €4,189, a €2,703 spread on the same certified stone. Kay Jewelers lists it at €4,189. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG823670043
Dimensions12.27 × 6.40 × 4.03 mm
L/W Ratio1.92
Top View
12.27 mm6.40 mm1.80 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823670043
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.0%

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 30
Current: €4,189 EUR|Low: €1,486 EUR|High: €4,189 EUR|Avg: €3,574 EUR
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 2€1,486 EUR
Retailer 4€3,081 EUR
Kay Jewelers€4,189 EUR
Retailer 3€4,189 EUR

3 data points across 4 retailers

4 retailers€1,486 EUR to €4,189 EUR

A
Cheapest Retailer
-
€1,486 EUR
$1,660 USD
B
Retailer 2
-
€3,081 EUR
$3,442 USD
View
B
Retailer 3
-
€4,189 EUR
$4,680 USD
View
Most Expensive
B
Kay Jewelers
259776984 · Nov 1
€4,189 EUR
$4,680 USD
View
3 more retailers have this diamond
Prices start from €1,486 EURSave up to €2,703 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
1.80ct Marquise
€1,486 EUR