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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 5513031052

Certificate GIA 5513031052

Diamond specifications and retailer prices

From £1,569 GBP
As of November 6, 2026
Save £918 GBP (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,476 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 5513031052. Listed at 8 retailers as of November 5, 2026, with a 58% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5513031052
Dimensions7.25 × 7.31 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.25 mm7.31 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5513031052
Side View
Table 58.0%Crown 35.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.8%

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: £4,476 GBP|Low: £1,560 GBP|High: £4,476 GBP|Avg: £2,440 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 3£1,569 GBP
Retailer 8£1,918 GBP
Retailer 7£2,074 GBP
Retailer 5£2,141 GBP
Retailer 4£2,223 GBP
Retailer 10£2,447 GBP
Retailer 6£2,470 GBP
Retailer 2£2,487 GBP
Retailer 9£2,547 GBP
NZ Jewellers£4,476 GBP

20 data points across 10 retailers

8 retailers£1,569 GBP to £2,487 GBP

A
Cheapest Retailer
-
£1,569 GBP
B+
Retailer 2
-
£1,918 GBP
View
B+
Retailer 3
-
£2,074 GBP
View
Retailer 4
-
£2,141 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£2,223 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£2,470 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£2,487 GBP
View
Most Expensive
NZ Jewellers
80017714-a1f8-4849-9ba3-a3837ae50363 · Oct 27
£4,476 GBP
$6,024 USD
View
Price last confirmed 10 days ago
7 more retailers have this diamond
Prices start from £1,569 GBPSave up to £918 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
1.51ct Round
£1,569 GBP