CaratHunter
Plans
Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6542368669

Certificate GIA 6542368669

Diamond specifications and retailer prices

From £4,487 GBP
A$9,250 AUD
As of November 1, 2026
Save £5,174 GBP (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,661 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 6542368669. Listed at 17 retailers as of October 30, 2026, with prices from £4,487 to £9,661, a £5,174 spread on the same certified stone. NZ Jewellers lists it at £9,661. 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
OriginNatural
Grading LabGIA
CertificateGIA 6542368669
Dimensions7.29 × 7.34 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.29 mm7.34 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542368669
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.7%

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: £9,661 GBP|Low: £3,185 GBP|High: £9,661 GBP|Avg: £5,833 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 9£3,185 GBP
Retailer 15£4,564 GBP
Retailer 4£4,830 GBP
Retailer 14£4,830 GBP
Retailer 17£5,233 GBP
Retailer 16£5,314 GBP
Retailer 12£5,331 GBP
Retailer 10£5,409 GBP
Retailer 5£5,799 GBP
Retailer 6£5,799 GBP
Retailer 13£5,822 GBP
Retailer 11£5,971 GBP
Retailer 7£5,993 GBP
Retailer 3£6,038 GBP
Retailer 8£6,365 GBP
Retailer 2£8,050 GBP
NZ Jewellers£9,661 GBP

40 data points across 17 retailers

17 retailers£4,487 GBP to £9,661 GBP

B+
Cheapest Retailer
-
£4,487 GBP
A$9,250 AUD
B+
Retailer 2
-
£4,564 GBP
$6,115 USD
View
B+
Retailer 3
-
£4,830 GBP
$6,472 USD
View
B+
Retailer 4
-
£4,830 GBP
$6,472 USD
View
Final sale: no returns
B+
Retailer 5
-
£5,233 GBP
$7,012 USD
View
B+
Retailer 6
-
£5,314 GBP
$7,120 USD
View
B+
Retailer 7
-
£5,331 GBP
$7,143 USD
View
B+
Retailer 8
-
£5,409 GBP
View
B+
Retailer 9
-
£5,799 GBP
$7,770 USD
View
B+
Retailer 10
-
£5,799 GBP
$7,770 USD
View
B+
Retailer 11
-
£5,822 GBP
$7,801 USD
View
B+
Retailer 12
-
£5,971 GBP
€7,620 EUR
View
B
Retailer 13
-
£5,993 GBP
$8,030 USD
View
B
Retailer 14
-
£6,038 GBP
$8,090 USD
View
Retailer 15
-
£6,365 GBP
$8,528 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
£8,050 GBP
View
Most Expensive
B
NZ Jewellers
3f48afd1-8abf-450b-a82f-d6648a2087b1 · Oct 30
£9,661 GBP
$12,945 USD
View
16 more retailers have this diamond
Prices start from £4,487 GBPSave up to £5,174 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
£4,487 GBP