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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 €768 EUR
HK$6,700 HKD
As of October 31, 2026
Save €2,345 EUR (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €3,113 EUR at With Clarity · As of October 31, 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 October 31, 2026, with prices from €768 to €3,113, a €2,345 spread on the same certified stone. With Clarity lists it at €3,113. 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
Color
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: Oct 31
Current: €1,021 EUR|Low: €642 EUR|High: €5,344 EUR|Avg: €1,890 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€642 EUR
Retailer 12€768 EUR
Retailer 9€804 EUR
Retailer 14€819 EUR
Retailer 1€1,021 EUR
Retailer 15€1,088 EUR
Retailer 2€1,256 EUR
Retailer 5€1,403 EUR
Retailer 7€1,464 EUR
Retailer 10€1,534 EUR
Retailer 6€2,073 EUR
Retailer 13€2,218 EUR
Retailer 17€2,219 EUR
Retailer 3€2,295 EUR
Retailer 8€2,560 EUR
Retailer 16€2,806 EUR
Retailer 11€2,828 EUR
With Clarity€3,113 EUR

22 data points across 18 retailers

17 retailers€768 EUR to €3,113 EUR

A
Cheapest Retailer
-
€768 EUR
HK$6,700 HKD
Retailer 2
-
€804 EUR
£708 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
€819 EUR
$915 USD
View
A
Retailer 4
-
€1,021 EUR
View
B+
Retailer 5
-
€1,088 EUR
$1,215 USD
View
A
Retailer 6
-
€1,256 EUR
$1,403 USD
View
Retailer 7
-
€1,403 EUR
ZAR 25,314 ZAR
View
Price last confirmed 7 days ago
Retailer 8
-
€1,464 EUR
A$2,516 AUD
View
Price last confirmed 11 days ago
A
Retailer 9
-
€1,534 EUR
$1,714 USD
View
B+
Retailer 10
-
€2,073 EUR
£1,824 GBP
View
B+
Retailer 11
-
€2,218 EUR
SGD 3,348 SGD
View
B+
Retailer 12
-
€2,219 EUR
$2,479 USD
View
B+
Retailer 13
-
€2,295 EUR
$2,565 USD
View
Retailer 14
-
€2,560 EUR
$2,860 USD
View
Price last confirmed 13 days ago
B+
Retailer 15
-
€2,806 EUR
£2,468 GBP
View
B+
Retailer 16
-
€2,828 EUR
$3,160 USD
View
Most Expensive
B+
With Clarity
839647911 · Oct 31
€3,113 EUR
$3,478 USD
View
16 more retailers have this diamond
Prices start from €768 EURSave up to €2,345 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
€768 EUR