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Cushion|Lab Grown|IGI

5.51ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804659325

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804659325

Diamond specifications and retailer prices

From $11,369 AUD
$7,986 USD
As of November 1, 2026
Save $33,411 AUD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $44,780 AUD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.51ct lab-grown cushion diamond

This 5.51ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804659325 or 804659325. Listed at 12 retailers as of October 31, 2026, with prices from $11,369 to $44,780, a $33,411 spread on the same certified stone. Taylor and Hart lists it at $44,780. 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

5.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659325
Dimensions11.71 × 9.68 × 6.22 mm
L/W Ratio1.21
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.71 mm9.68 mm5.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659325
Side View
Table 61.0%Crown 37.8°Girdle: MED-STKPavilion 36.5°Culet: NoneDepth 64.3%

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: Nov 1
Current: $15,176 AUD|Low: $11,369 AUD|High: $47,456 AUD|Avg: $25,881 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
November 1, 2026
Retailer 10$11,369 AUD
Retailer 5$14,777 AUD
Retailer 1$15,176 AUD
Retailer 2$15,452 AUD
Retailer 6$17,003 AUD
Retailer 9$22,044 AUD
Retailer 7$23,615 AUD
Retailer 11$24,685 AUD
Retailer 4$25,650 AUD
Retailer 8$35,105 AUD
Retailer 3$39,691 AUD
Taylor and Hart$44,780 AUD

39 data points across 12 retailers

12 retailers$11,369 AUD to $44,780 AUD

A
Cheapest Retailer
-
$11,369 AUD
$7,986 USD
A
Retailer 2
-
$14,777 AUD
$10,380 USD
View
A
Retailer 3
-
$15,176 AUD
$10,660 USD
View
A
Retailer 4
-
$15,452 AUD
HK$84,800 HKD
View
A
Retailer 5
-
$17,003 AUD
£9,404 GBP
View
A
Retailer 6
-
$22,044 AUD
$15,485 USD
View
A
Retailer 7
-
$23,615 AUD
€15,798 EUR
View
B+
Retailer 8
-
$24,685 AUD
$17,340 USD
View
B+
Retailer 9
-
$25,650 AUD
£14,187 GBP
View
B+
Retailer 10
-
$35,105 AUD
$24,659 USD
View
B
Retailer 11
-
$39,691 AUD
$27,881 USD
View
Most Expensive
B
Taylor and Hart
YXBMR75 · Oct 31
$44,780 AUD
$31,456 USD
View
11 more retailers have this diamond
Prices start from $11,369 AUDSave up to $33,411 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
5.51ct Cushion
$11,369 AUD