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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1559762644

Certificate GIA 1559762644

Diamond specifications and retailer prices

From £3,596 GBP
$4,818 USD
As of October 31, 2026
Save £4,365 GBP (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,960 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559762644. Listed at 20 retailers as of October 30, 2026, with prices from £3,596 to £7,960, a £4,365 spread on the same certified stone. NZ Jewellers lists it at £7,960. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1559762644
Dimensions7.28 × 7.33 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.28 mm7.33 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559762644
Side View
Table 59.0%Crown 36°Girdle: STK-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £7,960 GBP|Low: £3,596 GBP|High: £7,960 GBP|Avg: £5,104 GBP|+17.3%
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
Retailer 14
November 1, 2026
Retailer 11£3,596 GBP
Retailer 2£3,646 GBP
Retailer 6£3,761 GBP
Retailer 5£3,980 GBP
Retailer 3£4,312 GBP
Retailer 13£4,312 GBP
Retailer 14£4,312 GBP
Retailer 9£4,535 GBP
Retailer 4£4,975 GBP
Retailer 10£5,201 GBP
Retailer 7£5,748 GBP
Retailer 8£7,012 GBP
Retailer 12£7,431 GBP
NZ Jewellers£7,960 GBP

25 data points across 14 retailers

20 retailers£3,596 GBP to £7,960 GBP

A
Cheapest Retailer
-
£3,596 GBP
$4,818 USD
A
Retailer 2
-
£3,646 GBP
$4,885 USD
View
A
Retailer 3
-
£3,761 GBP
$5,039 USD
View
B+
Retailer 4
-
£3,980 GBP
$5,333 USD
View
Final sale: no returns
B+
Retailer 5
-
£4,257 GBP
$5,703 USD
View
B+
Retailer 6
-
£4,312 GBP
$5,778 USD
View
B+
Retailer 7
-
£4,312 GBP
$5,778 USD
View
B+
Retailer 8
-
£4,312 GBP
$5,778 USD
View
B+
Retailer 9
-
£4,334 GBP
$5,807 USD
View
B+
Retailer 10
-
£4,535 GBP
View
B+
Retailer 11
-
£4,627 GBP
$6,200 USD
View
B+
Retailer 12
-
£4,627 GBP
$6,200 USD
View
B+
Retailer 13
-
£4,777 GBP
$6,400 USD
View
B+
Retailer 14
-
£4,975 GBP
$6,666 USD
View
B+
Retailer 15
-
£5,201 GBP
€6,637 EUR
View
Retailer 16
-
£5,249 GBP
$7,033 USD
View
Price last confirmed 17 days ago
B+
Retailer 17
-
£5,748 GBP
View
B
Retailer 18
-
£7,012 GBP
View
B
Retailer 19
-
£7,431 GBP
View
Most Expensive
B
NZ Jewellers
acae055a-3203-40ce-bc1b-966d8c4cac9b · Oct 30
£7,960 GBP
$10,666 USD
View
19 more retailers have this diamond
Prices start from £3,596 GBPSave up to £4,365 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
£3,596 GBP