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Round|Natural|GIA

1.51ct H I1 Round Natural Diamond

EX • H/I1 • GIA 5513587675

Certificate GIA 5513587675

Diamond specifications and retailer prices

From £3,808 GBP
$5,110 USD
As of November 1, 2026
Save £4,533 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £8,341 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 H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 5513587675. Listed at 11 retailers as of October 30, 2026, with prices from £3,808 to £8,341, a £4,533 spread on the same certified stone. NZ Jewellers lists it at £8,341. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5513587675
Dimensions7.46 × 7.40 × 4.51 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
7.46 mm7.40 mm1.51 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5513587675
Side View
Table 59.0%Crown 31.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.6%

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 1
Current: £8,341 GBP|Low: £3,808 GBP|High: £8,341 GBP|Avg: £5,041 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 6£3,808 GBP
Retailer 8£3,941 GBP
Retailer 12£3,970 GBP
Retailer 7£4,518 GBP
Retailer 9£4,518 GBP
Retailer 11£4,518 GBP
Retailer 3£5,030 GBP
Retailer 4£5,030 GBP
Retailer 5£5,201 GBP
Retailer 10£5,213 GBP
Retailer 2£5,425 GBP
Retailer 13£5,946 GBP
NZ Jewellers£8,341 GBP

21 data points across 13 retailers

11 retailers£3,808 GBP to £8,341 GBP

B+
Cheapest Retailer
-
£3,808 GBP
$5,110 USD
B+
Retailer 2
-
£3,941 GBP
$5,288 USD
View
B
Retailer 3
-
£4,518 GBP
$6,063 USD
View
B
Retailer 4
-
£4,518 GBP
$6,063 USD
View
B
Retailer 5
-
£4,518 GBP
$6,063 USD
View
B
Retailer 6
-
£5,030 GBP
$6,750 USD
View
B
Retailer 7
-
£5,030 GBP
$6,750 USD
View
B
Retailer 8
-
£5,201 GBP
$6,980 USD
View
B
Retailer 9
-
£5,213 GBP
$6,996 USD
View
B
Retailer 10
-
£5,425 GBP
€6,933 EUR
View
Most Expensive
B
NZ Jewellers
47719a08-0a63-4386-9ef9-de956c3aea11 · Oct 30
£8,341 GBP
$11,193 USD
View
10 more retailers have this diamond
Prices start from £3,808 GBPSave up to £4,533 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+
1.51ct Round
£3,808 GBP