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Round|Natural|GIA

0.51ct K I1 Round Natural Diamond

GD • K/I1 • GIA 2327890331

Certificate GIA 2327890331

Diamond specifications and retailer prices

From £310 GBP
As of November 5, 2026
Save £1,002 GBP (76%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,312 GBP at NZ Jewellers · As of November 4, 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 K colour (faint-tinted) and I1 clarity (included), with a standard cut grade and certified by GIA 2327890331. Listed at 6 retailers as of November 4, 2026, with prices from £310 to £1,312, a £1,002 spread on the same certified stone. NZ Jewellers lists it at £1,312. 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
I1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 2327890331
Dimensions4.89 × 4.91 × 3.20 mm
L/W Ratio1.00
Star length55%
Lower girdle80%
Top View
4.89 mm4.91 mm0.51 ctK / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2327890331
Side View
Table 57.0%Crown 38.5°Girdle: Very ThickPavilion 40°Culet: Very SmallDepth 65.4%

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 5
Current: £1,312 GBP|Low: £310 GBP|High: £1,312 GBP|Avg: £506 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5£310 GBP
Retailer 3£334 GBP
Retailer 7£334 GBP
Retailer 6£358 GBP
Retailer 4£377 GBP
Retailer 8£444 GBP
Retailer 2£513 GBP
Retailer 9£514 GBP
NZ Jewellers£1,312 GBP

15 data points across 9 retailers

6 retailers£310 GBP to £1,312 GBP

B+
Cheapest Retailer
-
£310 GBP
Retailer 2
-
£334 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£334 GBP
View
B
Retailer 4
-
£358 GBP
View
B
Retailer 5
-
£513 GBP
View
Most Expensive
C
NZ Jewellers
88dce006-d645-47b1-a61d-3f3dd913d9bf · Nov 4
£1,312 GBP
$1,766 USD
View
5 more retailers have this diamond
Prices start from £310 GBPSave up to £1,002 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 Round
£310 GBP