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Round|Natural|GIA

0.51ct G IF Round Natural Diamond

EX • G/IF • GIA 2566166671

Certificate GIA 2566166671

Diamond specifications and retailer prices

From £626 GBP
As of November 5, 2026
Save £1,425 GBP (69%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £2,138 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 2566166671. Listed at 27 retailers as of November 4, 2026, with a 228% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566166671
Dimensions5.10 × 5.14 × 3.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Minor Details of Polish
Top View
5.10 mm5.14 mm0.51 ctG / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566166671
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A+
Exceptional
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 5
Current: £1,086 GBP|Low: £626 GBP|High: £1,743 GBP|Avg: £1,034 GBP|-10.9%
Retailer 1
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
November 6, 2026
Retailer 11£626 GBP
Retailer 8£776 GBP
Retailer 16£806 GBP
Retailer 12£831 GBP
Retailer 7£841 GBP
Retailer 4£874 GBP
Retailer 3£940 GBP
Retailer 5£941 GBP
Retailer 9£944 GBP
Retailer 15£970 GBP
Retailer 10£1,005 GBP
Retailer 1£1,086 GBP
Retailer 6£1,116 GBP
Retailer 13£1,298 GBP
Retailer 14£1,536 GBP
Retailer 2£1,687 GBP

30 data points across 16 retailers

27 retailers£626 GBP to £2,051 GBP

A+
Cheapest Retailer
-
£626 GBP
Retailer 2
-
£656 GBP
View
Price last confirmed 29 days ago
A
Retailer 3
-
£776 GBP
View
Final sale: no returns
A
Retailer 4
-
£806 GBP
View
A
Retailer 5
-
£831 GBP
View
Retailer 6
-
£831 GBP
View
Price last confirmed 36 days ago
Retailer 7
-
£841 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£874 GBP
View
Retailer 9
-
£877 GBP
View
Price last confirmed 36 days ago
Retailer 10
-
£910 GBP
View
Price last confirmed 38 days ago
A
Retailer 11
-
£940 GBP
View
A
Retailer 12
-
£941 GBP
View
A
Retailer 13
-
£944 GBP
View
A
Retailer 14
-
£970 GBP
View
B+
Retailer 15
-
£1,005 GBP
View
Retailer 16
-
£1,011 GBP
View
Price last confirmed 38 days ago
B+
Retailer 17
-
£1,086 GBP
View
B+
Retailer 18
-
£1,116 GBP
View
Retailer 19
-
£1,146 GBP
View
Price last confirmed 33 days ago
Retailer 20
-
£1,200 GBP
View
Price last confirmed 33 days ago
B+
Retailer 21
-
£1,298 GBP
View
B+
Retailer 22
-
£1,536 GBP
View
Retailer 23
-
£1,669 GBP
View
Price last confirmed 31 days ago
B
Retailer 24
-
£1,687 GBP
View
B
Retailer 25
-
£2,051 GBP
View
Retailer 26
-
£2,138 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
9513b660-9201-459d-87d6-cb30528425dd · Oct 6
£2,138 GBP
$2,877 USD
View
Price last confirmed 30 days ago
26 more retailers have this diamond
Prices start from £626 GBPSave up to £1,425 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 Round
£626 GBP