Round|Natural|GIA

1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 7566201671

Certificate GIA 7566201671

Diamond specifications and retailer prices

From £3,744 GBP
$5,017 USD
As of October 31, 2026
Save £4,653 GBP (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £9,413 GBP at NZ Jewellers · As of October 3, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566201671. Listed at 25 retailers as of October 30, 2026, with a 124% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7566201671
Dimensions7.29 × 7.33 × 4.58 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
7.29 mm7.33 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566201671
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: Oct 31
Current: £8,398 GBP|Low: £3,744 GBP|High: £9,413 GBP|Avg: £5,776 GBP|-10.8%
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
November 1, 2026
Retailer 5£3,744 GBP
Retailer 7£4,434 GBP
Retailer 4£4,549 GBP
Retailer 11£4,715 GBP
Retailer 15£4,784 GBP
Retailer 14£4,989 GBP
Retailer 8£5,022 GBP
Retailer 6£5,091 GBP
Retailer 9£5,149 GBP
Retailer 10£5,406 GBP
Retailer 2£5,526 GBP
Retailer 13£5,587 GBP
Retailer 12£6,237 GBP
Retailer 3£7,728 GBP
NZ Jewellers£8,398 GBP

31 data points across 15 retailers

25 retailers£3,744 GBP to £8,398 GBP

Retailer 1
-
£3,728 GBP
$4,995 USD
Price last confirmed 34 days ago
A
Retailer 2
-
£3,744 GBP
$5,017 USD
View
Retailer 3
-
£4,434 GBP
A$9,139 AUD
View
Price last confirmed 10 days ago
A
Retailer 4
-
£4,549 GBP
$6,095 USD
View
A
Retailer 5
-
£4,715 GBP
$6,317 USD
View
A
Retailer 6
-
£4,784 GBP
$6,410 USD
View
B+
Retailer 7
-
£4,989 GBP
$6,685 USD
View
Final sale: no returns
A
Retailer 8
-
£5,022 GBP
View
B+
Retailer 9
-
£5,091 GBP
$6,821 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£5,149 GBP
View
B+
Retailer 11
-
£5,406 GBP
$7,243 USD
View
B+
Retailer 12
-
£5,526 GBP
$7,404 USD
View
B+
Retailer 13
-
£5,587 GBP
€7,129 EUR
View
Retailer 14
-
£5,628 GBP
$7,541 USD
View
Price last confirmed 31 days ago
Retailer 15
-
£5,628 GBP
$7,541 USD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£5,647 GBP
$7,566 USD
View
Retailer 17
-
£5,715 GBP
$7,657 USD
View
Price last confirmed 32 days ago
Retailer 18
-
£5,889 GBP
$7,890 USD
View
Price last confirmed 33 days ago
Retailer 19
-
£6,235 GBP
$8,354 USD
View
Price last confirmed 11 days ago
B+
Retailer 20
-
£6,237 GBP
$8,357 USD
View
Retailer 21
-
£6,795 GBP
$9,104 USD
View
Price last confirmed 33 days ago
B
Retailer 22
-
£7,728 GBP
View
B
Retailer 23
-
£8,398 GBP
$11,252 USD
View
Retailer 24
-
£9,037 GBP
$12,109 USD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
01df77d3-885e-4f1d-8b60-0eee9a51ae7d · Oct 3
£9,413 GBP
$12,612 USD
View
Price last confirmed 28 days ago
24 more retailers have this diamond
Prices start from £3,744 GBPSave up to £4,653 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
£3,744 GBP