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Marquise|Lab Grown|IGI

5.09ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG818631869

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818631869

Diamond specifications and retailer prices

From $28,021 AUD
$19,683 USD
As of November 1, 2026
Save $38,597 AUD (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $66,618 AUD at Aida Diamonds · As of November 1, 2026
View at Aida Diamonds

About this 5.09ct lab-grown marquise diamond

This 5.09ct lab-grown marquise sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818631869 or 818631869. Listed at 14 retailers as of November 1, 2026, with prices from $28,021 to $66,618, a $38,597 spread on the same certified stone. Aida Diamonds lists it at $66,618. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.09
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818631869
Dimensions17.11 × 8.95 × 5.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.11 mm8.95 mm5.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818631869
Side View
Table 62.0%Crown 36°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 64.1%

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 1
Current: $66,618 AUD|Low: $28,021 AUD|High: $90,716 AUD|Avg: $49,455 AUD|-0.2%
Aida Diamonds
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
November 1, 2026
Retailer 12$28,021 AUD
Retailer 5$29,642 AUD
Retailer 8$29,730 AUD
Retailer 3$31,405 AUD
Retailer 7$33,479 AUD
Retailer 10$34,908 AUD
Retailer 14$46,602 AUD
Retailer 2$49,933 AUD
Retailer 11$57,476 AUD
Retailer 13$58,507 AUD
Retailer 9$66,093 AUD
Aida Diamonds$66,618 AUD
Retailer 6$77,038 AUD
Retailer 4$90,716 AUD

17 data points across 14 retailers

14 retailers$28,021 AUD to $66,618 AUD

A
Cheapest Retailer
-
$28,021 AUD
$19,683 USD
A
Retailer 2
-
$29,642 AUD
$20,822 USD
View
A
Retailer 3
-
$29,730 AUD
$20,884 USD
View
A
Retailer 4
-
$31,405 AUD
$22,060 USD
View
Final sale: no returns
A
Retailer 5
-
$33,479 AUD
£18,518 GBP
View
A
Retailer 6
-
$34,908 AUD
£19,308 GBP
View
B+
Retailer 7
-
$46,602 AUD
£25,776 GBP
View
B+
Retailer 8
-
$49,933 AUD
£27,618 GBP
View
B+
Retailer 9
-
$57,476 AUD
€38,451 EUR
View
B+
Retailer 10
-
$58,507 AUD
$41,098 USD
View
B
Retailer 11
-
$66,093 AUD
ZAR 750,031 ZAR
View
Most Expensive
Aida Diamonds
497633456 · Nov 1
$66,618 AUD
View
11 more retailers have this diamond
Prices start from $28,021 AUDSave up to $38,597 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
5.09ct Marquise
$28,021 AUD