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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

VG • G/SI1 • GIA 2566313689

Certificate GIA 2566313689

Diamond specifications and retailer prices

From £327 GBP
₹41,689 INR
As of November 1, 2026
Save £1,047 GBP (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,374 GBP at NZ Jewellers · As of October 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2566313689. Listed at 19 retailers as of October 30, 2026, with prices from £327 to £1,374, a £1,047 spread on the same certified stone. NZ Jewellers lists it at £1,374. 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
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2566313689
Dimensions6.87 × 4.31 × 2.68 mm
L/W Ratio1.59
Girdle conditionFaceted
Culet sizeNone
Top View
6.87 mm4.31 mm0.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2566313689
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NDepth 62.1%

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 1
Current: £327 GBP|Low: £326 GBP|High: £1,023 GBP|Avg: £512 GBP|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 1£327 GBP
Retailer 7£404 GBP
Retailer 5£430 GBP
Retailer 6£432 GBP
Retailer 2£543 GBP
Retailer 3£649 GBP
Retailer 4£1,017 GBP

32 data points across 7 retailers

19 retailers£327 GBP to £1,374 GBP

A
Cheapest Retailer
-
£327 GBP
₹41,689 INR
A
Retailer 2
-
£373 GBP
HK$3,900 HKD
View
B+
Retailer 3
-
£404 GBP
$541 USD
View
Final sale: no returns
B+
Retailer 4
-
£429 GBP
$575 USD
View
Retailer 5
-
£430 GBP
€549 EUR
View
Price last confirmed 7 days ago
A
Retailer 6
-
£432 GBP
SGD 783 SGD
View
B+
Retailer 7
-
£438 GBP
$587 USD
View
B+
Retailer 8
-
£459 GBP
$615 USD
View
B+
Retailer 9
-
£461 GBP
SGD 834 SGD
View
B+
Retailer 10
-
£472 GBP
$632 USD
View
B+
Retailer 11
-
£505 GBP
$677 USD
View
B+
Retailer 12
-
£543 GBP
View
Retailer 13
-
£544 GBP
View
Price last confirmed 33 days ago
B
Retailer 14
-
£612 GBP
$820 USD
View
B
Retailer 15
-
£613 GBP
$821 USD
View
B
Retailer 16
-
£649 GBP
€828 EUR
View
B
Retailer 17
-
£1,017 GBP
View
C
Retailer 18
-
£1,262 GBP
CA$2,349 CAD
View
Most Expensive
C
NZ Jewellers
59098bd1-ac53-455e-95e0-8075edd40a52 · Oct 30
£1,374 GBP
$1,841 USD
View
18 more retailers have this diamond
Prices start from £327 GBPSave up to £1,047 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
£327 GBP