Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 1232837125

Certificate GIA 1232837125

Diamond specifications and retailer prices

From £3,420 GBP
$4,583 USD
As of October 26, 2026
Save £3,631 GBP (51%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: £7,240 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1232837125. Listed at 30 retailers as of October 25, 2026, with a 106% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1232837125
Dimensions7.20 × 5.79 × 4.02 mm
L/W Ratio1.24
Culet sizeNone
Top View
7.20 mm5.79 mm1.50 ctG / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1232837125
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.5%

Caratlytics Score

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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 26
Current: £5,271 GBP|Low: £3,474 GBP|High: £7,104 GBP|Avg: £4,623 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 27, 2026
Retailer 3£3,528 GBP
Retailer 12£3,620 GBP
Retailer 4£3,679 GBP
Retailer 9£3,922 GBP
Retailer 8£4,084 GBP
Retailer 11£4,151 GBP
Retailer 5£4,197 GBP
Retailer 2£4,336 GBP
Retailer 6£4,705 GBP
Retailer 1£5,271 GBP
Retailer 7£6,387 GBP
Retailer 10£7,052 GBP

29 data points across 12 retailers

30 retailers£3,420 GBP to £7,052 GBP

A
Cheapest Retailer
-
£3,420 GBP
$4,583 USD
A
Retailer 2
-
£3,528 GBP
$4,727 USD
View
Retailer 3
-
£3,650 GBP
$4,891 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£3,679 GBP
$4,930 USD
View
Price last confirmed 6 days ago
Retailer 5
-
£3,881 GBP
$5,199 USD
View
Price last confirmed 7 days ago
Retailer 6
-
£3,922 GBP
$5,255 USD
View
Price last confirmed 41 days ago
Retailer 7
-
£3,922 GBP
$5,255 USD
View
Price last confirmed 34 days ago
B+
Retailer 8
-
£3,922 GBP
$5,255 USD
View
Retailer 9
-
£3,922 GBP
$5,255 USD
View
Price last confirmed 10 days ago
Retailer 10
-
£3,922 GBP
$5,255 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
£4,084 GBP
View
Retailer 12
-
£4,151 GBP
$5,562 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£4,197 GBP
View
B+
Retailer 14
-
£4,217 GBP
$5,650 USD
View
B+
Retailer 15
-
£4,217 GBP
$5,650 USD
View
Retailer 16
-
£4,336 GBP
A$8,938 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
£4,359 GBP
$5,840 USD
View
B+
Retailer 18
-
£4,441 GBP
$5,950 USD
View
Retailer 19
-
£4,525 GBP
$6,063 USD
View
Price last confirmed 41 days ago
Retailer 20
-
£4,525 GBP
$6,063 USD
View
Price last confirmed 34 days ago
Retailer 21
-
£4,525 GBP
$6,063 USD
View
Price last confirmed 11 days ago
B+
Retailer 22
-
£4,705 GBP
€6,004 EUR
View
Retailer 23
-
£4,776 GBP
$6,399 USD
View
Price last confirmed 18 days ago
B+
Retailer 24
-
£5,271 GBP
ZAR 114,107 ZAR
View
B
Retailer 25
-
£6,387 GBP
View
B
Retailer 26
-
£7,052 GBP
View
Retailer 27
-
£7,240 GBP
$9,701 USD
View
Price last confirmed 35 days ago
Retailer 28
-
£7,240 GBP
$9,701 USD
View
Price last confirmed 42 days ago
Retailer 29
-
£7,240 GBP
$9,701 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
7f53aa3a-4172-4d8f-b950-ad0ef41b3f5d · Oct 6
£7,240 GBP
$9,701 USD
View
Price last confirmed 26 days ago
29 more retailers have this diamond
Prices start from £3,420 GBPSave up to £3,631 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 Radiant
£3,420 GBP