Round|Natural|IGI

1.50ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 803677130

Shape and cutting style on the report: Round brilliant

Certificate IGI 803677130

Diamond specifications and retailer prices

From £1,221 GBP
SGD 2,211 SGD
As of October 31, 2026
Save £7,686 GBP (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £9,271 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct 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 IGI 803677130. Listed at 22 retailers as of October 30, 2026, with a 629% 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

1.50
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 803677130
Dimensions7.23 × 7.28 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.23 mm7.28 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803677130
Side View
Table 55.0%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.8%

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: £8,907 GBP|Low: £1,221 GBP|High: £9,114 GBP|Avg: £4,041 GBP|-2.3%
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
October 30, 2026
Retailer 10£1,221 GBP
Retailer 8£1,430 GBP
Retailer 7£1,442 GBP
Retailer 2£1,834 GBP
Retailer 12£1,840 GBP
Retailer 13£2,542 GBP
Retailer 9£4,247 GBP
Retailer 14£4,321 GBP
Retailer 4£4,945 GBP
Retailer 11£5,077 GBP
Retailer 6£5,325 GBP
Retailer 3£5,407 GBP
Retailer 5£7,888 GBP
NZ Jewellers£8,907 GBP

29 data points across 14 retailers

22 retailers£1,221 GBP to £8,907 GBP

A
Cheapest Retailer
-
£1,221 GBP
SGD 2,211 SGD
A
Retailer 2
-
£1,430 GBP
$1,916 USD
View
A
Retailer 3
-
£1,442 GBP
$1,933 USD
View
A
Retailer 4
-
£1,455 GBP
$1,950 USD
View
A
Retailer 5
-
£1,834 GBP
View
A
Retailer 6
-
£1,840 GBP
$2,465 USD
View
A
Retailer 7
-
£1,976 GBP
$2,648 USD
View
A
Retailer 8
-
£2,168 GBP
$2,905 USD
View
A
Retailer 9
-
£2,542 GBP
$3,407 USD
View
Retailer 10
-
£2,959 GBP
$3,965 USD
View
Price last confirmed 11 days ago
A
Retailer 11
-
£4,247 GBP
$5,690 USD
View
A
Retailer 12
-
£4,321 GBP
$5,789 USD
View
A
Retailer 13
-
£4,685 GBP
$6,277 USD
View
B+
Retailer 14
-
£5,077 GBP
$6,803 USD
View
B+
Retailer 15
-
£5,325 GBP
$7,135 USD
View
B+
Retailer 16
-
£5,407 GBP
$7,245 USD
View
Retailer 17
-
£5,450 GBP
$7,302 USD
View
Price last confirmed 24 days ago
Retailer 18
-
£5,543 GBP
$7,427 USD
View
Price last confirmed 35 days ago
Retailer 19
-
£5,628 GBP
$7,541 USD
View
Price last confirmed 32 days ago
B
Retailer 20
-
£8,907 GBP
$11,934 USD
View
Retailer 21
-
£9,114 GBP
$12,212 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
6c06a3cd-2692-446b-97cd-7071d15697d8 · Sep 28
£9,271 GBP
$12,422 USD
View
Price last confirmed 34 days ago
21 more retailers have this diamond
Prices start from £1,221 GBPSave up to £7,686 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
1.50ct Round
£1,221 GBP