Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1176060108

Certificate GIA 1176060108

Diamond specifications and retailer prices

From £9,695 GBP
$13,010 USD
As of November 1, 2026
Save £6,572 GBP (40%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £19,639 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1176060108. Listed at 22 retailers as of November 1, 2026, with a 68% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1176060108
Dimensions7.37 × 7.33 × 4.49 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.37 mm7.33 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1176060108
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £17,292 GBP|Low: £9,227 GBP|High: £17,501 GBP|Avg: £12,775 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6£9,695 GBP
Retailer 7£10,612 GBP
Retailer 3£11,576 GBP
Retailer 5£11,631 GBP
Retailer 8£11,811 GBP
Retailer 2£13,349 GBP
Retailer 4£16,267 GBP
Retailer 1£17,292 GBP

42 data points across 8 retailers

22 retailers£9,695 GBP to £16,267 GBP

B
Cheapest Retailer
-
£9,695 GBP
$13,010 USD
B
Retailer 2
-
£10,128 GBP
$13,591 USD
View
B
Retailer 3
-
£10,179 GBP
$13,660 USD
View
B
Retailer 4
-
£10,369 GBP
CA$19,326 CAD
View
B
Retailer 5
-
£10,450 GBP
A$21,575 AUD
View
B
Retailer 6
-
£10,612 GBP
$14,240 USD
View
Final sale: no returns
B
Retailer 7
-
£10,861 GBP
$14,575 USD
View
B
Retailer 8
-
£11,073 GBP
$14,859 USD
View
B
Retailer 9
-
£11,576 GBP
View
Retailer 10
-
£11,631 GBP
A$24,013 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
£11,811 GBP
$15,849 USD
View
B
Retailer 12
-
£11,995 GBP
$16,097 USD
View
B
Retailer 13
-
£12,457 GBP
$16,716 USD
View
B
Retailer 14
-
£12,497 GBP
$16,770 USD
View
B
Retailer 15
-
£12,497 GBP
$16,770 USD
View
B
Retailer 16
-
£12,858 GBP
$17,255 USD
View
B
Retailer 17
-
£12,914 GBP
$17,330 USD
View
B
Retailer 18
-
£13,349 GBP
€17,060 EUR
View
B
Retailer 19
-
£15,686 GBP
$21,050 USD
View
B
Retailer 20
-
£16,267 GBP
ZAR 352,662 ZAR
View
Retailer 21
-
£17,292 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.51SI1G1108A058N · Nov 2
£19,639 GBP
View
Price under review
21 more retailers have this diamond
Prices start from £9,695 GBPSave up to £6,572 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
£9,695 GBP