Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG787610099

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG787610099

Diamond specifications and retailer prices

From €737 EUR
$823 USD
As of October 29, 2026
Save €3,775 EUR (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €6,502 EUR at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG787610099 or 787610099. Listed at 20 retailers as of October 28, 2026, with a 512% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787610099
Dimensions12.01 × 7.91 × 5.25 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm7.91 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787610099
Side View
Table 64.0%Crown 37.5°Girdle: ThickPavilion 37.5°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €1,223 EUR|Low: €633 EUR|High: €4,565 EUR|Avg: €1,732 EUR|-12.9%
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
Retailer 18
October 29, 2026
Retailer 3€659 EUR
Retailer 16€737 EUR
Retailer 5€764 EUR
Retailer 7€764 EUR
Retailer 13€944 EUR
Retailer 4€1,085 EUR
Retailer 2€1,094 EUR
Retailer 1€1,223 EUR
Retailer 14€1,264 EUR
Retailer 12€1,626 EUR
Retailer 15€1,636 EUR
Retailer 18€1,882 EUR
Retailer 6€2,188 EUR
Retailer 9€2,478 EUR
Retailer 10€2,634 EUR
Retailer 8€2,724 EUR
Retailer 11€3,017 EUR
Retailer 17€4,511 EUR

37 data points across 18 retailers

20 retailers€737 EUR to €4,511 EUR

Retailer 1
-
€659 EUR
$736 USD
Price last confirmed 13 days ago
A
Retailer 2
-
€737 EUR
$823 USD
View
Final sale: no returns
Retailer 3
-
€764 EUR
$854 USD
View
Price last confirmed 15 days ago
Retailer 4
-
€764 EUR
$854 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
€944 EUR
$1,055 USD
View
A
Retailer 6
-
€1,085 EUR
$1,212 USD
View
B+
Retailer 7
-
€1,094 EUR
$1,222 USD
View
A
Retailer 8
-
€1,223 EUR
£1,076 GBP
View
Retailer 9
-
€1,264 EUR
View
Price last confirmed 9 days ago
A
Retailer 10
-
€1,626 EUR
ZAR 29,354 ZAR
View
Retailer 11
-
€1,636 EUR
A$2,812 AUD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
€1,882 EUR
$2,103 USD
View
B+
Retailer 13
-
€2,188 EUR
$2,444 USD
View
B+
Retailer 14
-
€2,478 EUR
$2,769 USD
View
B+
Retailer 15
-
€2,583 EUR
$2,886 USD
View
B+
Retailer 16
-
€2,634 EUR
$2,943 USD
View
B+
Retailer 17
-
€2,724 EUR
$3,043 USD
View
B+
Retailer 18
-
€3,017 EUR
£2,654 GBP
View
B
Retailer 19
-
€4,511 EUR
$5,040 USD
View
Most Expensive
Queensmith
LG787610099 · Oct 10
€6,502 EUR
£5,720 GBP
View
Price last confirmed 22 days ago
19 more retailers have this diamond
Prices start from €737 EURSave up to €3,775 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 Radiant
€737 EUR