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Oval|Natural|GIA

0.51ct G SI2 Oval Natural Diamond

GD • G/SI2 • GIA 6521187954

Certificate GIA 6521187954

Diamond specifications and retailer prices

From £404 GBP
As of November 6, 2026
Save £1,112 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,517 GBP at NZ Jewellers · As of November 5, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521187954. Listed at 10 retailers as of November 5, 2026, with prices from £404 to £1,517, a £1,112 spread on the same certified stone. NZ Jewellers lists it at £1,517. 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
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521187954
Dimensions6.27 × 4.49 × 2.77 mm
L/W Ratio1.40
Top View
6.27 mm4.49 mm0.51 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6521187954
Side View
Table 59.0%CrownGirdle: UND-UNDPavilionCulet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,517 GBP|Low: £371 GBP|High: £1,624 GBP|Avg: £754 GBP|-6.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£404 GBP
Retailer 7£439 GBP
Retailer 5£472 GBP
Retailer 9£505 GBP
Retailer 8£506 GBP
Retailer 2£592 GBP
Retailer 4£711 GBP
Retailer 3£1,115 GBP
Retailer 10£1,153 GBP
NZ Jewellers£1,517 GBP

43 data points across 10 retailers

10 retailers£404 GBP to £1,517 GBP

A
Cheapest Retailer
-
£404 GBP
Final sale: no returns
B+
Retailer 2
-
£439 GBP
View
B+
Retailer 3
-
£472 GBP
View
B+
Retailer 4
-
£474 GBP
View
B+
Retailer 5
-
£506 GBP
View
B
Retailer 6
-
£592 GBP
View
B
Retailer 7
-
£711 GBP
View
B
Retailer 8
-
£1,115 GBP
View
C
Retailer 9
-
£1,153 GBP
View
Most Expensive
C
NZ Jewellers
4b51fec2-089f-4d78-b7ed-12faccbf937a · Nov 5
£1,517 GBP
$2,030 USD
View
9 more retailers have this diamond
Prices start from £404 GBPSave up to £1,112 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
£404 GBP