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Cushion|Lab Grown|IGI

6.29ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG828680591

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG828680591

Diamond specifications and retailer prices

From HK$141,387 HKD
$18,021 USD
As of November 1, 2026
Save HK$292,888 HKD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$434,275 HKD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 6.29ct lab-grown cushion diamond

This 6.29ct lab-grown cushion 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 LG828680591 or 828680591. Listed at 13 retailers as of October 27, 2026, with prices from HK$141,387 to HK$434,275, a HK$292,888 spread on the same certified stone. Wholesale Diamonds Direct lists it at HK$434,275. 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

6.29
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828680591
Dimensions12.23 × 9.91 × 6.52 mm
L/W Ratio1.23
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
12.23 mm9.91 mm6.29 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828680591
Side View
Table 60.0%Crown 36.3°Girdle: MED-STKPavilion 35.5°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$244,239 HKD|Low: HK$109,291 HKD|High: HK$434,275 HKD|Avg: HK$254,344 HKD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 1, 2026
Retailer 9HK$109,291 HKD
Retailer 2HK$141,387 HKD
Retailer 5HK$170,278 HKD
Retailer 10HK$193,185 HKD
Retailer 7HK$207,440 HKD
Retailer 1HK$244,239 HKD
Retailer 4HK$258,774 HKD
Retailer 6HK$264,126 HKD
Retailer 3HK$280,970 HKD
Retailer 8HK$300,896 HKD
Retailer 11HK$380,917 HKD
Wholesale Diamonds DirectHK$434,275 HKD

18 data points across 12 retailers

13 retailersHK$141,387 HKD to HK$434,275 HKD

Retailer 1
-
HK$109,291 HKD
$13,930 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
HK$141,387 HKD
$18,021 USD
View
B+
Retailer 3
-
HK$170,278 HKD
£17,089 GBP
View
B+
Retailer 4
-
HK$193,185 HKD
$24,623 USD
View
B+
Retailer 5
-
HK$207,440 HKD
$26,440 USD
View
B+
Retailer 6
-
HK$244,239 HKD
£24,512 GBP
View
B
Retailer 7
-
HK$258,774 HKD
A$50,743 AUD
View
B+
Retailer 8
-
HK$264,126 HKD
€32,062 EUR
View
B
Retailer 9
-
HK$279,307 HKD
$35,600 USD
View
B
Retailer 10
-
HK$280,970 HKD
$35,812 USD
View
B
Retailer 11
-
HK$300,896 HKD
ZAR 619,575 ZAR
View
B
Retailer 12
-
HK$380,917 HKD
$48,551 USD
View
Most Expensive
B
Wholesale Diamonds Direct
496695798 · Oct 27
HK$434,275 HKD
$55,352 USD
View
12 more retailers have this diamond
Prices start from HK$141,387 HKDSave up to HK$292,888 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.

B+
6.29ct Cushion
HK$141,387 HKD