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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 $1,522 NZD
HK$6,700 HKD
As of November 1, 2026
Save $4,649 NZD (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,171 NZD 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 $1,522 to $6,171, a $4,649 spread on the same certified stone. With Clarity lists it at $6,171. 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: $2,023 NZD|Low: $1,272 NZD|High: $10,593 NZD|Avg: $3,747 NZD|-3.0%
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
October 31, 2026
Retailer 4$1,272 NZD
Retailer 12$1,522 NZD
Retailer 9$1,595 NZD
Retailer 14$1,623 NZD
Retailer 1$2,023 NZD
Retailer 15$2,156 NZD
Retailer 2$2,489 NZD
Retailer 5$2,780 NZD
Retailer 7$2,902 NZD
Retailer 10$3,041 NZD
Retailer 6$4,110 NZD
Retailer 13$4,396 NZD
Retailer 17$4,398 NZD
Retailer 3$4,550 NZD
Retailer 8$5,074 NZD
Retailer 16$5,561 NZD
Retailer 11$5,607 NZD
With Clarity$6,171 NZD

22 data points across 18 retailers

17 retailers$1,522 NZD to $6,171 NZD

A
Cheapest Retailer
-
$1,522 NZD
HK$6,700 HKD
Retailer 2
-
$1,595 NZD
£708 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
$1,623 NZD
$915 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
$2,023 NZD
€1,086 EUR
View
B+
Retailer 5
-
$2,156 NZD
$1,215 USD
View
A
Retailer 6
-
$2,489 NZD
$1,403 USD
View
Retailer 7
-
$2,780 NZD
ZAR 25,314 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
$2,902 NZD
A$2,516 AUD
View
Price last confirmed 12 days ago
A
Retailer 9
-
$3,041 NZD
$1,714 USD
View
Retailer 10
-
$4,110 NZD
£1,824 GBP
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$4,396 NZD
SGD 3,348 SGD
View
Retailer 12
-
$4,398 NZD
$2,479 USD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$4,550 NZD
$2,565 USD
View
Retailer 14
-
$5,074 NZD
$2,860 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$5,561 NZD
£2,468 GBP
View
B+
Retailer 16
-
$5,607 NZD
$3,160 USD
View
Most Expensive
B+
With Clarity
839647911 · Nov 2
$6,171 NZD
$3,478 USD
View
16 more retailers have this diamond
Prices start from $1,522 NZDSave up to $4,649 NZD

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
$1,522 NZD