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Marquise|Lab Grown|IGI

1.65ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG820604760

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG820604760

Diamond specifications and retailer prices

From $703 AUD
$494 USD
As of October 29, 2026
Save $2,600 AUD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,685 AUD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 1.65ct lab-grown marquise diamond

This 1.65ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG820604760 or 820604760. Listed at 15 retailers as of October 29, 2026, with a 370% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG820604760
Dimensions12.55 × 6.04 × 3.65 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.55 mm6.04 mm1.65 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG820604760
Side View
Table 62.0%Crown 39.7°Girdle: STK-THKPavilion 38.3°Culet: NoneDepth 60.4%

Caratlytics Score

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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 29
Current: $2,094 AUD|Low: $703 AUD|High: $3,394 AUD|Avg: $1,897 AUD|+3.6%
Retailer 1
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 31, 2026
Retailer 2$703 AUD
Retailer 14$982 AUD
Retailer 7$1,223 AUD
Retailer 8$1,288 AUD
Retailer 5$1,347 AUD
Retailer 13$1,360 AUD
Retailer 11$1,764 AUD
Retailer 10$1,815 AUD
Retailer 1$2,094 AUD
Retailer 9$2,534 AUD
Retailer 12$2,552 AUD
Retailer 3$2,878 AUD
Retailer 6$3,048 AUD
Retailer 4$3,304 AUD

22 data points across 14 retailers

15 retailers$703 AUD to $3,304 AUD

A
Cheapest Retailer
-
$703 AUD
$494 USD
Final sale: no returns
A
Retailer 2
-
$982 AUD
$690 USD
View
A
Retailer 3
-
$1,223 AUD
$859 USD
View
A
Retailer 4
-
$1,288 AUD
£712 GBP
View
A
Retailer 5
-
$1,347 AUD
ZAR 15,283 ZAR
View
A
Retailer 6
-
$1,360 AUD
€910 EUR
View
A
Retailer 7
-
$1,764 AUD
$1,239 USD
View
A
Retailer 8
-
$1,815 AUD
View
A
Retailer 9
-
$2,094 AUD
$1,471 USD
View
A
Retailer 10
-
$2,534 AUD
$1,780 USD
View
A
Retailer 11
-
$2,552 AUD
$1,793 USD
View
B+
Retailer 12
-
$2,878 AUD
£1,592 GBP
View
B+
Retailer 13
-
$3,048 AUD
$2,141 USD
View
B+
Retailer 14
-
$3,304 AUD
SGD 3,136 SGD
View
Most Expensive
Novita Diamonds
cert_820604760 · Oct 8
$3,685 AUD
View
Price last confirmed 22 days ago
14 more retailers have this diamond
Prices start from $703 AUDSave up to $2,600 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
1.65ct Marquise
$703 AUD