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Cushion|Lab Grown|IGI

5.31ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816608288

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816608288

Diamond specifications and retailer prices

From HK$55,861 HKD
$7,120 USD
As of October 31, 2026
Save HK$280,876 HKD (83%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$336,737 HKD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 5.31ct lab-grown cushion diamond

This 5.31ct 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 LG816608288 or 816608288. Listed at 8 retailers as of October 31, 2026, with prices from HK$55,861 to HK$336,737, a HK$280,876 spread on the same certified stone. Do Amore Diamonds lists it at HK$336,737. 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

5.31
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816608288
Dimensions11.09 × 9.29 × 6.32 mm
L/W Ratio1.19
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
11.09 mm9.29 mm5.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816608288
Side View
Table 59.0%Crown 36.5°Girdle: STK-VTKPavilion 35.9°Culet: NoneDepth 68.0%

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: Oct 31
Current: HK$336,737 HKD|Low: HK$55,861 HKD|High: HK$388,754 HKD|Avg: HK$166,962 HKD|-13.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7HK$55,861 HKD
Retailer 6HK$64,452 HKD
Retailer 8HK$80,732 HKD
Retailer 3HK$87,589 HKD
Retailer 4HK$109,812 HKD
Retailer 2HK$123,036 HKD
Retailer 5HK$131,102 HKD
Retailer 10HK$176,724 HKD
Do Amore DiamondsHK$336,737 HKD
Retailer 9HK$343,030 HKD

28 data points across 10 retailers

8 retailersHK$55,861 HKD to HK$336,737 HKD

A
Cheapest Retailer
-
HK$55,861 HKD
$7,120 USD
A
Retailer 2
-
HK$64,452 HKD
$8,215 USD
View
Retailer 3
-
HK$80,732 HKD
$10,290 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
HK$87,589 HKD
$11,164 USD
View
A
Retailer 5
-
HK$109,812 HKD
€13,330 EUR
View
A
Retailer 6
-
HK$123,036 HKD
£12,348 GBP
View
B+
Retailer 7
-
HK$131,102 HKD
$16,710 USD
View
Most Expensive
B
Do Amore Diamonds
27-DEB1A4FD5 · Oct 31
HK$336,737 HKD
$42,920 USD
View
7 more retailers have this diamond
Prices start from HK$55,861 HKDSave up to HK$280,876 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
5.31ct Cushion
HK$55,861 HKD