Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 7492490306

Certificate GIA 7492490306

Diamond specifications and retailer prices

From £517 GBP
As of November 6, 2026
Save £508 GBP (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,759 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 7492490306. Listed at 15 retailers as of November 4, 2026, with a 98% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7492490306
Dimensions6.77 × 4.38 × 2.75 mm
L/W Ratio1.55
Key to symbols
Crystal
Top View
6.77 mm4.38 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7492490306
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 62.8%

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: £663 GBP|Low: £474 GBP|High: £1,039 GBP|Avg: £736 GBP|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£517 GBP
Retailer 5£526 GBP
Retailer 1£663 GBP
Retailer 6£691 GBP
Retailer 4£794 GBP
Retailer 8£843 GBP
Retailer 2£865 GBP
Retailer 3£1,025 GBP

43 data points across 8 retailers

15 retailers£517 GBP to £1,025 GBP

B+
Cheapest Retailer
-
£517 GBP
Final sale: no returns
B+
Retailer 2
-
£526 GBP
View
Retailer 3
-
£561 GBP
View
Price last confirmed 29 days ago
Retailer 4
-
£561 GBP
View
Price last confirmed 29 days ago
B+
Retailer 5
-
£570 GBP
View
Retailer 6
-
£582 GBP
View
Price last confirmed 38 days ago
Retailer 7
-
£647 GBP
View
Price last confirmed 38 days ago
B
Retailer 8
-
£660 GBP
View
B
Retailer 9
-
£663 GBP
View
B
Retailer 10
-
£691 GBP
View
B
Retailer 11
-
£794 GBP
View
Retailer 12
-
£843 GBP
View
Price last confirmed 33 days ago
B
Retailer 13
-
£865 GBP
View
B
Retailer 14
-
£1,025 GBP
View
Most Expensive
NZ Jewellers
f410a2aa-2356-4632-9caa-0db4fa25dcf5 · Sep 30
£1,759 GBP
$2,354 USD
View
Price under review
14 more retailers have this diamond
Prices start from £517 GBPSave up to £508 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
£517 GBP