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Oval|Natural|GIA

0.51ct J I1 Oval Natural Diamond

VG • J/I1 • GIA 6371043187

Certificate GIA 6371043187

Diamond specifications and retailer prices

From £248 GBP
HK$2,600 HKD
As of November 1, 2026
Save £222 GBP (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,110 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 I1 clarity (included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6371043187. Listed at 8 retailers as of October 31, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
J
Colour
I1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6371043187
Dimensions6.64 × 4.31 × 2.73 mm
L/W Ratio1.54
Top View
6.64 mm4.31 mm0.51 ctJ / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 6371043187
Side View
Table 58.0%CrownGirdle: NULPavilionCulet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £470 GBP|Low: £248 GBP|High: £472 GBP|Avg: £365 GBP|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7£248 GBP
Retailer 4£290 GBP
Retailer 6£312 GBP
Retailer 2£315 GBP
Retailer 5£390 GBP
Retailer 3£404 GBP
Retailer 8£428 GBP
Retailer 9£435 GBP
Retailer 1£470 GBP

16 data points across 9 retailers

8 retailers£248 GBP to £470 GBP

B+
Cheapest Retailer
-
£248 GBP
HK$2,600 HKD
B+
Retailer 2
-
£290 GBP
$388 USD
View
B+
Retailer 3
-
£312 GBP
$418 USD
View
B+
Retailer 4
-
£323 GBP
$433 USD
View
B
Retailer 5
-
£390 GBP
$522 USD
View
B
Retailer 6
-
£404 GBP
$541 USD
View
B
Retailer 7
-
£470 GBP
€600 EUR
View
Most Expensive
NZ Jewellers
ec87aaea-d811-4a07-8b16-73bcf4321677 · Oct 30
£1,110 GBP
$1,487 USD
View
Price under review
7 more retailers have this diamond
Prices start from £248 GBPSave up to £222 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.

B+
0.51ct Oval
£248 GBP