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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 €765 EUR
HK$6,700 HKD
As of November 1, 2026
Save €2,336 EUR (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €3,101 EUR 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 €765 to €3,101, a €2,336 spread on the same certified stone. With Clarity lists it at €3,101. 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

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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: €1,017 EUR|Low: €639 EUR|High: €5,323 EUR|Avg: €1,883 EUR|-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€639 EUR
Retailer 12€765 EUR
Retailer 9€801 EUR
Retailer 14€816 EUR
Retailer 1€1,017 EUR
Retailer 15€1,083 EUR
Retailer 2€1,251 EUR
Retailer 5€1,397 EUR
Retailer 7€1,458 EUR
Retailer 10€1,528 EUR
Retailer 6€2,065 EUR
Retailer 13€2,209 EUR
Retailer 17€2,210 EUR
Retailer 3€2,286 EUR
Retailer 8€2,550 EUR
Retailer 16€2,795 EUR
Retailer 11€2,817 EUR
With Clarity€3,101 EUR

22 data points across 18 retailers

17 retailers€765 EUR to €3,101 EUR

A
Cheapest Retailer
-
€765 EUR
HK$6,700 HKD
Retailer 2
-
€801 EUR
£708 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
€816 EUR
$915 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
€1,017 EUR
View
B+
Retailer 5
-
€1,083 EUR
$1,215 USD
View
A
Retailer 6
-
€1,251 EUR
$1,403 USD
View
Retailer 7
-
€1,397 EUR
ZAR 25,314 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
€1,458 EUR
A$2,516 AUD
View
Price last confirmed 12 days ago
A
Retailer 9
-
€1,528 EUR
$1,714 USD
View
Retailer 10
-
€2,065 EUR
£1,824 GBP
View
Price last confirmed 7 days ago
B+
Retailer 11
-
€2,209 EUR
SGD 3,348 SGD
View
Retailer 12
-
€2,210 EUR
$2,479 USD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
€2,286 EUR
$2,565 USD
View
Retailer 14
-
€2,550 EUR
$2,860 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
€2,795 EUR
£2,468 GBP
View
B+
Retailer 16
-
€2,817 EUR
$3,160 USD
View
Most Expensive
B+
With Clarity
839647911 · Nov 2
€3,101 EUR
$3,478 USD
View
16 more retailers have this diamond
Prices start from €765 EURSave up to €2,336 EUR

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
€765 EUR