Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 2557293700

Certificate GIA 2557293700

Diamond specifications and retailer prices

From £489 GBP
As of November 6, 2026
Save £734 GBP (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,661 GBP at NZ Jewellers · As of September 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557293700. Listed at 15 retailers as of November 1, 2026, with a 150% 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557293700
Dimensions7.10 × 4.35 × 2.64 mm
L/W Ratio1.63
Key to symbols
Cloud, Feather, Crystal
Top View
7.10 mm4.35 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557293700
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.8%

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: £748 GBP|Low: £448 GBP|High: £1,238 GBP|Avg: £671 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8£489 GBP
Retailer 10£507 GBP
Retailer 11£510 GBP
Retailer 3£530 GBP
Retailer 4£530 GBP
Retailer 2£611 GBP
Retailer 5£644 GBP
Retailer 12£665 GBP
Retailer 1£748 GBP
Retailer 9£796 GBP
Retailer 6£817 GBP
Retailer 7£1,223 GBP

43 data points across 12 retailers

15 retailers£489 GBP to £1,223 GBP

B+
Cheapest Retailer
-
£489 GBP
Final sale: no returns
B+
Retailer 2
-
£507 GBP
View
Retailer 3
-
£530 GBP
View
Price last confirmed 29 days ago
Retailer 4
-
£530 GBP
View
Price last confirmed 29 days ago
Retailer 5
-
£550 GBP
View
Price last confirmed 38 days ago
Retailer 6
-
£611 GBP
View
Price last confirmed 38 days ago
B
Retailer 7
-
£628 GBP
View
B
Retailer 8
-
£628 GBP
View
B
Retailer 9
-
£644 GBP
View
B
Retailer 10
-
£665 GBP
View
B
Retailer 11
-
£748 GBP
View
Retailer 12
-
£796 GBP
View
Price last confirmed 33 days ago
B
Retailer 13
-
£817 GBP
View
B
Retailer 14
-
£1,223 GBP
View
Most Expensive
NZ Jewellers
71cc3dde-595c-41e9-a2c4-aafdcb9acb2c · Sep 30
£1,661 GBP
$2,223 USD
View
Price under review
14 more retailers have this diamond
Prices start from £489 GBPSave up to £734 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
£489 GBP