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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6415821107

Certificate GIA 6415821107

Diamond specifications and retailer prices

From £2,203 GBP
As of November 5, 2026
Save £2,872 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,075 GBP at NZ Jewellers · As of November 5, 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 6415821107. Listed at 8 retailers as of November 5, 2026, with prices from £2,203 to £5,075, a £2,872 spread on the same certified stone. NZ Jewellers lists it at £5,075. 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
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6415821107
Dimensions7.37 × 7.39 × 4.57 mm
L/W Ratio1.00
Top View
7.37 mm7.39 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6415821107
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

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 5
Current: £5,075 GBP|Low: £2,203 GBP|High: £5,075 GBP|Avg: £3,038 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£2,203 GBP
Retailer 7£2,563 GBP
Retailer 9£2,719 GBP
Retailer 4£2,913 GBP
Retailer 5£2,913 GBP
Retailer 6£2,913 GBP
Retailer 2£3,270 GBP
Retailer 8£3,361 GBP
NZ Jewellers£5,075 GBP

43 data points across 9 retailers

8 retailers£2,203 GBP to £5,075 GBP

A
Cheapest Retailer
-
£2,203 GBP
B+
Retailer 2
-
£2,563 GBP
View
Retailer 3
-
£2,913 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£2,913 GBP
View
B+
Retailer 5
-
£2,913 GBP
View
B
Retailer 6
-
£3,270 GBP
View
B
Retailer 7
-
£3,361 GBP
View
Most Expensive
C
NZ Jewellers
0ff528ff-8f04-46f5-aefe-607847c55df1 · Nov 5
£5,075 GBP
$6,830 USD
View
7 more retailers have this diamond
Prices start from £2,203 GBPSave up to £2,872 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
£2,203 GBP