CaratHunter
Plans
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 $25,655 AUD
$18,021 USD
As of November 1, 2026
Save $53,144 AUD (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $78,799 AUD 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 $25,655 to $78,799, a $53,144 spread on the same certified stone. Wholesale Diamonds Direct lists it at $78,799. 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: $44,317 AUD|Low: $19,831 AUD|High: $78,799 AUD|Avg: $46,151 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
Wholesale Diamonds Direct
November 1, 2026
Retailer 9$19,831 AUD
Retailer 2$25,655 AUD
Retailer 5$30,897 AUD
Retailer 10$35,053 AUD
Retailer 7$37,640 AUD
Retailer 1$44,317 AUD
Retailer 4$46,955 AUD
Retailer 6$47,926 AUD
Retailer 3$50,982 AUD
Retailer 8$54,597 AUD
Retailer 11$69,117 AUD
Wholesale Diamonds Direct$78,799 AUD

18 data points across 12 retailers

13 retailers$25,655 AUD to $78,799 AUD

Retailer 1
-
$19,831 AUD
$13,930 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
$25,655 AUD
$18,021 USD
View
B+
Retailer 3
-
$30,897 AUD
£17,089 GBP
View
B+
Retailer 4
-
$35,053 AUD
$24,623 USD
View
B+
Retailer 5
-
$37,640 AUD
$26,440 USD
View
B+
Retailer 6
-
$44,317 AUD
£24,512 GBP
View
B
Retailer 7
-
$46,955 AUD
View
B+
Retailer 8
-
$47,926 AUD
€32,062 EUR
View
B
Retailer 9
-
$50,680 AUD
$35,600 USD
View
B
Retailer 10
-
$50,982 AUD
$35,812 USD
View
B
Retailer 11
-
$54,597 AUD
ZAR 619,575 ZAR
View
B
Retailer 12
-
$69,117 AUD
$48,551 USD
View
Most Expensive
B
Wholesale Diamonds Direct
496695798 · Oct 27
$78,799 AUD
$55,352 USD
View
12 more retailers have this diamond
Prices start from $25,655 AUDSave up to $53,144 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.

B+
6.29ct Cushion
$25,655 AUD