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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 $14,170 NZD
$7,986 USD
As of November 1, 2026
Save $41,642 NZD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $55,811 NZD 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 $14,170 to $55,811, a $41,642 spread on the same certified stone. Taylor and Hart lists it at $55,811. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $18,914 NZD|Low: $14,170 NZD|High: $59,147 NZD|Avg: $32,200 NZD|-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$14,170 NZD
Retailer 5$18,417 NZD
Retailer 1$18,914 NZD
Retailer 2$19,259 NZD
Retailer 6$21,191 NZD
Retailer 9$27,475 NZD
Retailer 7$29,432 NZD
Retailer 11$30,766 NZD
Retailer 4$31,968 NZD
Retailer 8$43,752 NZD
Retailer 3$49,469 NZD
Taylor and Hart$55,811 NZD

38 data points across 12 retailers

12 retailers$14,170 NZD to $55,811 NZD

A
Cheapest Retailer
-
$14,170 NZD
$7,986 USD
A
Retailer 2
-
$18,417 NZD
$10,380 USD
View
A
Retailer 3
-
$18,914 NZD
$10,660 USD
View
A
Retailer 4
-
$19,259 NZD
HK$84,800 HKD
View
A
Retailer 5
-
$21,191 NZD
£9,404 GBP
View
A
Retailer 6
-
$27,475 NZD
$15,485 USD
View
A
Retailer 7
-
$29,432 NZD
€15,798 EUR
View
B+
Retailer 8
-
$30,766 NZD
$17,340 USD
View
B+
Retailer 9
-
$31,968 NZD
£14,187 GBP
View
B+
Retailer 10
-
$43,752 NZD
$24,659 USD
View
B
Retailer 11
-
$49,469 NZD
$27,881 USD
View
Most Expensive
B
Taylor and Hart
YXBMR75 · Oct 31
$55,811 NZD
$31,456 USD
View
11 more retailers have this diamond
Prices start from $14,170 NZDSave up to $41,642 NZD

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
$14,170 NZD