Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 1519515584

Certificate GIA 1519515584

Diamond specifications and retailer prices

From £525 GBP
As of November 6, 2026
Save £654 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,019 GBP at NZ Jewellers · As of October 20, 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 1519515584. Listed at 21 retailers as of November 2, 2026, with a 124% 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 1519515584
Dimensions6.68 × 4.55 × 2.67 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal
Top View
6.68 mm4.55 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519515584
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.7%

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: £2,019 GBP|Low: £516 GBP|High: £2,019 GBP|Avg: £796 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
November 6, 2026
Retailer 4£525 GBP
Retailer 13£526 GBP
Retailer 5£593 GBP
Retailer 12£644 GBP
Retailer 11£669 GBP
Retailer 8£740 GBP
Retailer 14£743 GBP
Retailer 3£766 GBP
Retailer 2£785 GBP
Retailer 7£832 GBP
Retailer 6£968 GBP
Retailer 9£993 GBP
Retailer 10£1,179 GBP
NZ Jewellers£2,019 GBP

39 data points across 14 retailers

21 retailers£525 GBP to £1,179 GBP

B+
Cheapest Retailer
-
£525 GBP
B+
Retailer 2
-
£526 GBP
View
B+
Retailer 3
-
£593 GBP
View
Final sale: no returns
Retailer 4
-
£640 GBP
View
Price last confirmed 74 days ago
B
Retailer 5
-
£644 GBP
View
B
Retailer 6
-
£651 GBP
View
B
Retailer 7
-
£669 GBP
View
B
Retailer 8
-
£740 GBP
View
B
Retailer 9
-
£743 GBP
View
Retailer 10
-
£743 GBP
View
Price last confirmed 14 days ago
B
Retailer 11
-
£743 GBP
View
B
Retailer 12
-
£766 GBP
View
B
Retailer 13
-
£785 GBP
View
B
Retailer 14
-
£832 GBP
View
B
Retailer 15
-
£949 GBP
View
Retailer 16
-
£968 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£993 GBP
View
B
Retailer 18
-
£1,106 GBP
View
B
Retailer 19
-
£1,179 GBP
View
Retailer 20
-
£2,019 GBP
View
Price under review
Most Expensive
NZ Jewellers
f1577039-890a-4496-8172-06303e487764 · Oct 20
£2,019 GBP
$2,702 USD
View
Price under review
20 more retailers have this diamond
Prices start from £525 GBPSave up to £654 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
£525 GBP