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Cushion|Lab Grown|IGI

6.40ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG706534146

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG706534146

Diamond specifications and retailer prices

From HK$20,485 HKD
$2,611 USD
As of October 31, 2026
Save HK$94,219 HKD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$114,704 HKD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 6.4ct lab-grown cushion diamond

This 6.4ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG706534146 or 706534146. Listed at 15 retailers as of October 31, 2026, with prices from HK$20,485 to HK$114,704, a HK$94,219 spread on the same certified stone. Do Amore Diamonds lists it at HK$114,704. 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

6.40
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706534146
Dimensions9.80 × 9.80 × 6.41 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.80 mm9.80 mm6.40 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706534146
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 65.4%

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$20,485 HKD|Low: HK$18,673 HKD|High: HK$57,931 HKD|Avg: HK$32,950 HKD|-9.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10HK$19,347 HKD
Retailer 1HK$20,485 HKD
Retailer 2HK$20,618 HKD
Retailer 8HK$20,634 HKD
Retailer 5HK$22,553 HKD
Retailer 11HK$27,170 HKD
Retailer 4HK$29,406 HKD
Retailer 3HK$40,534 HKD
Retailer 6HK$41,320 HKD
Retailer 9HK$51,385 HKD
Retailer 7HK$57,473 HKD

43 data points across 11 retailers

15 retailersHK$20,485 HKD to HK$114,704 HKD

Retailer 1
-
HK$19,347 HKD
$2,466 USD
Price last confirmed 20 days ago
A
Retailer 2
-
HK$20,485 HKD
$2,611 USD
View
Final sale: no returns
A
Retailer 3
-
HK$20,618 HKD
$2,628 USD
View
A
Retailer 4
-
HK$20,634 HKD
$2,630 USD
View
A
Retailer 5
-
HK$22,553 HKD
£2,263 GBP
View
A
Retailer 6
-
HK$24,322 HKD
$3,100 USD
View
B+
Retailer 7
-
HK$27,170 HKD
$3,463 USD
View
B+
Retailer 8
-
HK$29,406 HKD
£2,951 GBP
View
B+
Retailer 9
-
HK$40,534 HKD
£4,068 GBP
View
B+
Retailer 10
-
HK$41,320 HKD
ZAR 85,083 ZAR
View
Retailer 11
-
HK$51,385 HKD
A$10,076 AUD
View
Price last confirmed 23 days ago
B
Retailer 12
-
HK$54,234 HKD
$6,913 USD
View
B
Retailer 13
-
HK$57,473 HKD
£5,768 GBP
View
B
Retailer 14
-
HK$74,566 HKD
$9,504 USD
View
Most Expensive
B
Do Amore Diamonds
27-6BB238219 · Oct 31
HK$114,704 HKD
$14,620 USD
View
14 more retailers have this diamond
Prices start from HK$20,485 HKDSave up to HK$94,219 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
6.40ct Cushion
HK$20,485 HKD