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Oval|Natural|GIA

0.51ct J SI2 Oval Natural Diamond

EX • J/SI2 • GIA 1242038354

Certificate GIA 1242038354

Diamond specifications and retailer prices

From £216 GBP
$290 USD
As of November 2, 2026
Save £291 GBP (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £507 GBP at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242038354. Listed at 2 retailers as of November 1, 2026, with prices from £216 to £507, a £291 spread on the same certified stone. 77 Diamonds lists it at £507. 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

0.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242038354
Dimensions6.48 × 4.42 × 2.75 mm
L/W Ratio1.47
Top View
6.48 mm4.42 mm0.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1242038354
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £507 GBP|Low: £197 GBP|High: £513 GBP|Avg: £360 GBP|+1.4%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2£216 GBP
77 Diamonds£507 GBP

30 data points across 2 retailers

2 retailers£216 GBP to £507 GBP

A
Cheapest Retailer
-
£216 GBP
$290 USD
Final sale: no returns
Most Expensive
B
77 Diamonds
OVCFASFBC5Y7 · Nov 1
£507 GBP
View
1 more retailer has this diamond
Prices start from £216 GBPSave up to £291 GBP

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
0.51ct Oval
£216 GBP