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Oval|Natural|GIA

0.51ct K SI2 Oval Natural Diamond

VG • K/SI2 • GIA 2376441621

Certificate GIA 2376441621

Diamond specifications and retailer prices

From £362 GBP
As of November 5, 2026
Save £473 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,386 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 2376441621. Listed at 12 retailers as of November 1, 2026, with a 131% 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2376441621
Dimensions6.53 × 4.36 × 2.76 mm
L/W Ratio1.50
Top View
6.53 mm4.36 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2376441621
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,386 GBP|Low: £362 GBP|High: £1,386 GBP|Avg: £490 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
Retailer 15
November 6, 2026
Retailer 12£362 GBP
Retailer 5£364 GBP
Retailer 9£389 GBP
Retailer 14£389 GBP
Retailer 6£399 GBP
Retailer 4£411 GBP
Retailer 13£417 GBP
Retailer 2£429 GBP
Retailer 8£444 GBP
Retailer 3£456 GBP
Retailer 15£459 GBP
Retailer 10£543 GBP
Retailer 7£549 GBP
Retailer 11£835 GBP
NZ Jewellers£1,386 GBP

30 data points across 15 retailers

12 retailers£362 GBP to £835 GBP

A
Cheapest Retailer
-
£362 GBP
B+
Retailer 2
-
£389 GBP
View
Retailer 3
-
£389 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£411 GBP
View
B+
Retailer 5
-
£417 GBP
View
B+
Retailer 6
-
£429 GBP
View
B
Retailer 7
-
£444 GBP
View
B
Retailer 8
-
£456 GBP
View
B
Retailer 9
-
£459 GBP
View
B
Retailer 10
-
£543 GBP
View
B
Retailer 11
-
£835 GBP
View
Most Expensive
NZ Jewellers
3b063a02-d0ae-491e-bb58-4125d27533c2 · Nov 5
£1,386 GBP
$1,855 USD
View
Price under review
11 more retailers have this diamond
Prices start from £362 GBPSave up to £473 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
£362 GBP