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Round|Natural|GIA

1.51ct D I1 Round Natural Diamond

EX • D/I1 • GIA 6515182503

Certificate GIA 6515182503

Diamond specifications and retailer prices

From £2,646 GBP
HK$27,700 HKD
As of November 1, 2026
Save £3,254 GBP (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,900 GBP at NZ Jewellers · As of October 30, 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 D colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6515182503. Listed at 11 retailers as of October 30, 2026, with prices from £2,646 to £5,900, a £3,254 spread on the same certified stone. NZ Jewellers lists it at £5,900. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6515182503
Dimensions7.29 × 7.33 × 4.50 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
7.29 mm7.33 mm1.51 ctD / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515182503
Side View
Table 59.0%Crown 35.5°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 61.6%

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: £5,900 GBP|Low: £2,618 GBP|High: £6,209 GBP|Avg: £3,943 GBP|-5.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6£2,646 GBP
Retailer 2£2,697 GBP
Retailer 5£2,954 GBP
Retailer 4£3,387 GBP
Retailer 7£3,537 GBP
Retailer 9£3,564 GBP
Retailer 3£3,817 GBP
Retailer 8£3,908 GBP
Retailer 10£5,415 GBP
NZ Jewellers£5,900 GBP

45 data points across 10 retailers

11 retailers£2,646 GBP to £5,900 GBP

A
Cheapest Retailer
-
£2,646 GBP
HK$27,700 HKD
A
Retailer 2
-
£2,697 GBP
₹344,140 INR
View
A
Retailer 3
-
£2,954 GBP
$3,958 USD
View
A
Retailer 4
-
£3,387 GBP
$4,538 USD
View
A
Retailer 5
-
£3,537 GBP
$4,740 USD
View
A
Retailer 6
-
£3,564 GBP
$4,775 USD
View
A
Retailer 7
-
£3,564 GBP
$4,775 USD
View
A
Retailer 8
-
£3,817 GBP
€4,871 EUR
View
B+
Retailer 9
-
£3,908 GBP
$5,236 USD
View
B
Retailer 10
-
£5,415 GBP
$7,255 USD
View
Most Expensive
B
NZ Jewellers
6860eb66-dc8a-4cd3-9ed8-2e23e42255fc · Oct 30
£5,900 GBP
$7,906 USD
View
10 more retailers have this diamond
Prices start from £2,646 GBPSave up to £3,254 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
£2,646 GBP