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Cushion|Lab Grown|IGI

6.47ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG660415018

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG660415018

Diamond specifications and retailer prices

From HK$123,005 HKD
$15,678 USD
As of November 1, 2026
Save HK$323,698 HKD (72%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$446,703 HKD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 6.47ct lab-grown cushion diamond

This 6.47ct 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 LG660415018 or 660415018. Listed at 19 retailers as of October 27, 2026, with prices from HK$123,005 to HK$446,703, a HK$323,698 spread on the same certified stone. Wholesale Diamonds Direct lists it at HK$446,703. 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

6.47
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660415018
Dimensions12.28 × 10.24 × 6.62 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
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
12.28 mm10.24 mm6.47 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660415018
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 64.6%

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$299,771 HKD|Low: HK$107,172 HKD|High: HK$597,802 HKD|Avg: HK$245,613 HKD|-0.2%
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
Retailer 14
Wholesale Diamonds Direct
November 1, 2026
Retailer 3HK$107,172 HKD
Retailer 5HK$123,005 HKD
Retailer 11HK$136,319 HKD
Retailer 2HK$143,302 HKD
Retailer 14HK$172,590 HKD
Retailer 9HK$175,136 HKD
Retailer 12HK$213,011 HKD
Retailer 6HK$229,093 HKD
Retailer 7HK$245,434 HKD
Retailer 8HK$266,179 HKD
Retailer 10HK$271,689 HKD
Retailer 1HK$299,771 HKD
Retailer 13HK$309,401 HKD
Wholesale Diamonds DirectHK$446,703 HKD
Retailer 4HK$597,802 HKD

38 data points across 15 retailers

19 retailersHK$123,005 HKD to HK$446,703 HKD

Retailer 1
-
HK$107,172 HKD
$13,660 USD
Our latest check could not confirm this price
A
Retailer 2
-
HK$123,005 HKD
$15,678 USD
View
A
Retailer 3
-
HK$136,319 HKD
$17,375 USD
View
A
Retailer 4
-
HK$143,302 HKD
$18,265 USD
View
B+
Retailer 5
-
HK$150,324 HKD
$19,160 USD
View
B+
Retailer 6
-
HK$172,590 HKD
$21,998 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$175,136 HKD
£17,577 GBP
View
B+
Retailer 8
-
HK$213,011 HKD
$27,150 USD
View
B+
Retailer 9
-
HK$229,093 HKD
£22,992 GBP
View
B+
Retailer 10
-
HK$245,434 HKD
£24,632 GBP
View
B
Retailer 11
-
HK$266,179 HKD
A$52,195 AUD
View
B+
Retailer 12
-
HK$271,689 HKD
€32,980 EUR
View
B
Retailer 13
-
HK$299,771 HKD
A$58,782 AUD
View
B+
Retailer 14
-
HK$309,401 HKD
ZAR 637,088 ZAR
View
B
Retailer 15
-
HK$388,986 HKD
$49,580 USD
View
B
Retailer 16
-
HK$398,594 HKD
$50,804 USD
View
Most Expensive
B
Wholesale Diamonds Direct
113194995 · Oct 27
HK$446,703 HKD
$56,936 USD
View
16 more retailers have this diamond
Prices start from HK$123,005 HKDSave up to HK$323,698 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
6.47ct Cushion
HK$123,005 HKD