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Cushion|Lab Grown|IGI

4.51ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG839647911

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839647911

Diamond specifications and retailer prices

From HK$6,729 HKD
As of November 1, 2026
Save HK$20,560 HKD (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$27,289 HKD at With Clarity · As of November 2, 2026
View at With Clarity

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG839647911 or 839647911. Listed at 17 retailers as of November 1, 2026, with prices from HK$6,729 to HK$27,289, a HK$20,560 spread on the same certified stone. With Clarity lists it at HK$27,289. 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

4.51
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839647911
Dimensions11.33 × 8.15 × 5.44 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.33 mm8.15 mm4.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839647911
Side View
Table 59.0%Crown 34.9°Girdle: MED-THKPavilion 32.9°Culet: NoneDepth 66.7%

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$13,589 HKD|Low: HK$5,626 HKD|High: HK$46,841 HKD|Avg: HK$16,488 HKD|+1.1%
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
Retailer 15
Retailer 16
Retailer 17
With Clarity
November 2, 2026
Retailer 4HK$5,626 HKD
Retailer 12HK$6,729 HKD
Retailer 9HK$7,051 HKD
Retailer 14HK$7,179 HKD
Retailer 10HK$8,947 HKD
Retailer 15HK$9,533 HKD
Retailer 2HK$11,008 HKD
Retailer 5HK$12,294 HKD
Retailer 7HK$12,832 HKD
Retailer 1HK$13,589 HKD
Retailer 6HK$18,175 HKD
Retailer 13HK$19,439 HKD
Retailer 17HK$19,450 HKD
Retailer 3HK$20,122 HKD
Retailer 8HK$22,440 HKD
Retailer 16HK$24,593 HKD
Retailer 11HK$24,794 HKD
With ClarityHK$27,289 HKD

23 data points across 18 retailers

17 retailersHK$6,729 HKD to HK$27,289 HKD

A
Cheapest Retailer
-
HK$6,729 HKD
Retailer 2
-
HK$7,051 HKD
£708 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
HK$7,179 HKD
$915 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
HK$8,947 HKD
€1,086 EUR
View
Retailer 5
-
HK$9,533 HKD
$1,215 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
HK$11,008 HKD
$1,403 USD
View
Retailer 7
-
HK$12,294 HKD
ZAR 25,314 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
HK$12,832 HKD
A$2,516 AUD
View
Price last confirmed 13 days ago
A
Retailer 9
-
HK$13,589 HKD
$1,732 USD
View
Retailer 10
-
HK$18,175 HKD
£1,824 GBP
View
Price last confirmed 7 days ago
B+
Retailer 11
-
HK$19,439 HKD
SGD 3,348 SGD
View
Retailer 12
-
HK$19,450 HKD
$2,479 USD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
HK$20,122 HKD
$2,565 USD
View
Retailer 14
-
HK$22,440 HKD
$2,860 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
HK$24,593 HKD
£2,468 GBP
View
B+
Retailer 16
-
HK$24,794 HKD
$3,160 USD
View
Most Expensive
B+
With Clarity
839647911 · Nov 2
HK$27,289 HKD
$3,478 USD
View
16 more retailers have this diamond
Prices start from HK$6,729 HKDSave up to HK$20,560 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
4.51ct Cushion
HK$6,729 HKD