Round|Lab Grown|GIA

4.51ct J SI2 Round Lab Grown Diamond

EX • J/SI2

Diamond specifications and retailer prices

From €52,442 EUR
$58,589 USD
As of October 30, 2026
2 retailers carry this diamond
Most expensive: €52,442 EUR at The Perfect Carat · As of October 29, 2026
View at The Perfect Carat

About this 4.51ct lab-grown round diamond

This 4.51ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 2 retailers as of October 29, 2026, with a relatively tight 0% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.51
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions10.47 × 10.53 × 6.61 mm
L/W Ratio1.01
Top View
10.47 mm10.53 mm4.51 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: €56,639 EUR|Low: €38,783 EUR|High: €88,104 EUR|Avg: €45,532 EUR|+8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
The Perfect Carat
September 29, 2026
Retailer 2€38,783 EUR
Retailer 8€40,034 EUR
Retailer 7€43,069 EUR
Retailer 10€43,094 EUR
Retailer 9€43,795 EUR
Retailer 5€50,345 EUR
Retailer 4€52,442 EUR
The Perfect Carat€52,442 EUR
Retailer 6€54,541 EUR
Retailer 1€56,639 EUR
Retailer 3€88,104 EUR

30 data points across 11 retailers

2 retailers€52,442 EUR to €52,442 EUR

B
Cheapest Retailer
-
€52,442 EUR
$58,589 USD
Most Expensive
B
The Perfect Carat
tpc_f8aa20d8-c9ce-4251-b351-a7af3411ab13 · Oct 29
€52,442 EUR
$58,589 USD
View
1 more retailer has this diamond
Prices start from €52,442 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.

B
4.51ct Round
€52,442 EUR