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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 $2,123 SGD
$1,660 USD
As of November 2, 2026
Save $3,862 SGD (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,985 SGD at Kay Jewelers · As of November 2, 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 November 2, 2026, with prices from $2,123 to $5,985, a $3,862 spread on the same certified stone. Kay Jewelers lists it at $5,985. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,985 SGD|Low: $2,123 SGD|High: $5,985 SGD|Avg: $5,107 SGD
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 2$2,123 SGD
Retailer 4$4,402 SGD
Kay Jewelers$5,985 SGD
Retailer 3$5,985 SGD

3 data points across 4 retailers

4 retailers$2,123 SGD to $5,985 SGD

A
Cheapest Retailer
-
$2,123 SGD
$1,660 USD
B
Retailer 2
-
$4,402 SGD
$3,442 USD
View
B
Retailer 3
-
$5,985 SGD
$4,680 USD
View
Most Expensive
B
Kay Jewelers
259776984 · Nov 2
$5,985 SGD
$4,680 USD
View
3 more retailers have this diamond
Prices start from $2,123 SGDSave up to $3,862 SGD

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
$2,123 SGD