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Oval|Natural|GIA

0.51ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 6512933565

Certificate GIA 6512933565

Diamond specifications and retailer prices

From £359 GBP
As of November 6, 2026
Save £860 GBP (71%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,219 GBP at NZ Jewellers · As of November 7, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6512933565. Listed at 18 retailers as of November 6, 2026, with prices from £359 to £1,219, a £860 spread on the same certified stone. NZ Jewellers lists it at £1,219. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6512933565
Dimensions6.46 × 4.56 × 2.72 mm
L/W Ratio1.42
Top View
6.46 mm4.56 mm0.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6512933565
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.5%

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 6
Current: £1,219 GBP|Low: £359 GBP|High: £1,219 GBP|Avg: £546 GBP
NZ Jewellers
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
November 7, 2026
Retailer 8£359 GBP
Retailer 13£387 GBP
Retailer 9£388 GBP
Retailer 16£400 GBP
Retailer 4£418 GBP
Retailer 7£418 GBP
Retailer 6£448 GBP
Retailer 10£477 GBP
Retailer 12£482 GBP
Retailer 3£486 GBP
Retailer 2£536 GBP
Retailer 17£538 GBP
Retailer 5£544 GBP
Retailer 15£581 GBP
Retailer 14£602 GBP
Retailer 11£893 GBP
NZ Jewellers£1,219 GBP

33 data points across 17 retailers

18 retailers£359 GBP to £1,219 GBP

B+
Cheapest Retailer
-
£359 GBP
Final sale: no returns
B+
Retailer 2
-
£387 GBP
View
B+
Retailer 3
-
£388 GBP
View
B+
Retailer 4
-
£400 GBP
View
B+
Retailer 5
-
£418 GBP
View
B+
Retailer 6
-
£418 GBP
View
B
Retailer 7
-
£448 GBP
View
B
Retailer 8
-
£477 GBP
View
B
Retailer 9
-
£482 GBP
View
B
Retailer 10
-
£486 GBP
View
B
Retailer 11
-
£536 GBP
View
B
Retailer 12
-
£538 GBP
View
B
Retailer 13
-
£544 GBP
View
B
Retailer 14
-
£581 GBP
View
Retailer 15
-
£595 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£602 GBP
View
C
Retailer 17
-
£893 GBP
View
Most Expensive
C
NZ Jewellers
e88b3cfb-04d4-4540-a25e-ddb3611a6d3e · Nov 7
£1,219 GBP
$1,631 USD
View
17 more retailers have this diamond
Prices start from £359 GBPSave up to £860 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
£359 GBP