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Cushion|Lab Grown|IGI

5.57ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG799640078

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG799640078

Diamond specifications and retailer prices

From HK$78,481 HKD
$10,003 USD
As of November 1, 2026
Save HK$200,653 HKD (72%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$279,133 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.57ct lab-grown cushion diamond

This 5.57ct 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 LG799640078 or 799640078. Listed at 13 retailers as of October 31, 2026, with prices from HK$78,481 to HK$279,133, a HK$200,653 spread on the same certified stone. Taylor and Hart lists it at HK$279,133. 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

5.57
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle27.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799640078
Dimensions12.46 × 9.12 × 5.50 mm
L/W Ratio1.37
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
12.46 mm9.12 mm5.57 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799640078
Side View
Table 62.0%Crown 32.6°Girdle: STK-THKPavilion 27.9°Culet: NoneDepth 60.3%

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: HK$144,239 HKD|Low: HK$65,318 HKD|High: HK$279,133 HKD|Avg: HK$139,379 HKD|-3.5%
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
Taylor and Hart
November 1, 2026
Retailer 5HK$65,318 HKD
Retailer 12HK$78,481 HKD
Retailer 13HK$86,687 HKD
Retailer 2HK$88,735 HKD
Retailer 8HK$89,786 HKD
Retailer 9HK$95,859 HKD
Retailer 6HK$106,756 HKD
Retailer 4HK$128,656 HKD
Retailer 1HK$144,239 HKD
Retailer 11HK$165,960 HKD
Retailer 7HK$182,433 HKD
Retailer 10HK$229,926 HKD
Retailer 3HK$250,148 HKD
Taylor and HartHK$279,133 HKD

42 data points across 14 retailers

13 retailersHK$78,481 HKD to HK$279,133 HKD

A
Cheapest Retailer
-
HK$78,481 HKD
$10,003 USD
A
Retailer 2
-
HK$86,687 HKD
$11,049 USD
View
Final sale: no returns
A
Retailer 3
-
HK$88,735 HKD
$11,310 USD
View
Retailer 4
-
HK$89,786 HKD
$11,444 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
HK$95,859 HKD
$12,218 USD
View
A
Retailer 6
-
HK$106,756 HKD
£10,714 GBP
View
A
Retailer 7
-
HK$128,656 HKD
£12,912 GBP
View
B+
Retailer 8
-
HK$144,239 HKD
£14,476 GBP
View
B+
Retailer 9
-
HK$165,960 HKD
$21,153 USD
View
B+
Retailer 10
-
HK$182,433 HKD
ZAR 375,648 ZAR
View
B
Retailer 11
-
HK$229,926 HKD
$29,306 USD
View
B
Retailer 12
-
HK$250,148 HKD
$31,883 USD
View
Most Expensive
B
Taylor and Hart
OFZ7J5I · Oct 31
HK$279,133 HKD
$35,578 USD
View
12 more retailers have this diamond
Prices start from HK$78,481 HKDSave up to HK$200,653 HKD

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
5.57ct Cushion
HK$78,481 HKD