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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 $2,363 AUD
$1,660 USD
As of October 30, 2026
Save $4,299 AUD (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,662 AUD 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 $2,363 to $6,662, a $4,299 spread on the same certified stone. Kay Jewelers lists it at $6,662. 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: Oct 30
Current: $6,662 AUD|Low: $2,363 AUD|High: $6,662 AUD|Avg: $5,684 AUD
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 2$2,363 AUD
Retailer 4$4,900 AUD
Kay Jewelers$6,662 AUD
Retailer 3$6,662 AUD

3 data points across 4 retailers

4 retailers$2,363 AUD to $6,662 AUD

A
Cheapest Retailer
-
$2,363 AUD
$1,660 USD
B
Retailer 2
-
$4,900 AUD
$3,442 USD
View
B
Retailer 3
-
$6,662 AUD
$4,680 USD
View
Most Expensive
B
Kay Jewelers
259776984 · Nov 1
$6,662 AUD
$4,680 USD
View
3 more retailers have this diamond
Prices start from $2,363 AUDSave up to $4,299 AUD

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
$2,363 AUD