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Oval|Natural|GIA

0.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 5566616416

Certificate GIA 5566616416

Diamond specifications and retailer prices

From £205 GBP
As of November 6, 2026
Save £894 GBP (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,098 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5566616416. Listed at 17 retailers as of November 5, 2026, with prices from £205 to £1,098, a £894 spread on the same certified stone. NZ Jewellers lists it at £1,098. 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5566616416
Dimensions6.45 × 4.40 × 2.80 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.45 mm4.40 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5566616416
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: £1,098 GBP|Low: £205 GBP|High: £1,143 GBP|Avg: £402 GBP|-3.9%
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 6, 2026
Retailer 2£205 GBP
Retailer 17£254 GBP
Retailer 13£258 GBP
Retailer 8£264 GBP
Retailer 3£279 GBP
Retailer 7£287 GBP
Retailer 5£309 GBP
Retailer 6£320 GBP
Retailer 14£332 GBP
Retailer 10£340 GBP
Retailer 11£368 GBP
Retailer 4£384 GBP
Retailer 9£386 GBP
Retailer 16£396 GBP
Retailer 15£522 GBP
Retailer 12£661 GBP
NZ Jewellers£1,098 GBP

21 data points across 17 retailers

17 retailers£205 GBP to £1,098 GBP

A
Cheapest Retailer
-
£205 GBP
A
Retailer 2
-
£254 GBP
View
A
Retailer 3
-
£258 GBP
View
A
Retailer 4
-
£264 GBP
View
Final sale: no returns
A
Retailer 5
-
£279 GBP
View
A
Retailer 6
-
£287 GBP
View
Retailer 7
-
£309 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£320 GBP
View
A
Retailer 9
-
£332 GBP
View
A
Retailer 10
-
£340 GBP
View
B+
Retailer 11
-
£368 GBP
View
B+
Retailer 12
-
£384 GBP
View
B+
Retailer 13
-
£386 GBP
View
B+
Retailer 14
-
£396 GBP
View
B
Retailer 15
-
£522 GBP
View
B
Retailer 16
-
£661 GBP
View
Most Expensive
C
NZ Jewellers
050153ca-acf3-4ec1-accd-f670c23af8a1 · Nov 5
£1,098 GBP
$1,470 USD
View
16 more retailers have this diamond
Prices start from £205 GBPSave up to £894 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
£205 GBP