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Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 1455290122

Certificate GIA 1455290122

Diamond specifications and retailer prices

From £6,743 GBP
$9,035 USD
As of November 1, 2026
Save £5,896 GBP (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £12,639 GBP at NZ Jewellers · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1455290122. Listed at 23 retailers as of November 1, 2026, with prices from £6,743 to £12,639, a £5,896 spread on the same certified stone. NZ Jewellers lists it at £12,639. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle36.7°
OriginNatural
Grading LabGIA
CertificateGIA 1455290122
Dimensions7.61 × 5.73 × 3.98 mm
L/W Ratio1.33
Girdle conditionPolished
Top View
7.61 mm5.73 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1455290122
Side View
Table 68.0%CrownGirdle: Very ThickPavilion 36.7°Culet: NoneDepth 69.5%

Caratlytics Score

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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: £12,639 GBP|Low: £6,320 GBP|High: £12,639 GBP|Avg: £9,070 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£6,743 GBP
Retailer 3£7,583 GBP
Retailer 9£7,583 GBP
Retailer 4£8,191 GBP
Retailer 11£8,216 GBP
Retailer 10£8,342 GBP
Retailer 7£8,352 GBP
Retailer 2£9,119 GBP
Retailer 6£11,141 GBP
Retailer 5£11,843 GBP
NZ Jewellers£12,639 GBP

45 data points across 11 retailers

23 retailers£6,743 GBP to £12,639 GBP

B
Cheapest Retailer
-
£6,743 GBP
$9,035 USD
B
Retailer 2
-
£7,024 GBP
$9,411 USD
View
B
Retailer 3
-
£7,036 GBP
$9,428 USD
View
B
Retailer 4
-
£7,116 GBP
A$14,669 AUD
View
B
Retailer 5
-
£7,243 GBP
CA$13,479 CAD
View
B
Retailer 6
-
£7,497 GBP
$10,045 USD
View
B
Retailer 7
-
£7,583 GBP
$10,161 USD
View
B
Retailer 8
-
£7,583 GBP
$10,161 USD
View
Final sale: no returns
B
Retailer 9
-
£7,647 GBP
$10,246 USD
View
B
Retailer 10
-
£8,191 GBP
View
B
Retailer 11
-
£8,216 GBP
$11,008 USD
View
B
Retailer 12
-
£8,342 GBP
$11,177 USD
View
Retailer 13
-
£8,352 GBP
A$17,217 AUD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£8,756 GBP
$11,732 USD
View
B
Retailer 15
-
£8,881 GBP
$11,900 USD
View
B
Retailer 16
-
£8,881 GBP
$11,900 USD
View
B
Retailer 17
-
£9,119 GBP
€11,636 EUR
View
B
Retailer 18
-
£9,180 GBP
$12,300 USD
View
B
Retailer 19
-
£9,479 GBP
$12,701 USD
View
Retailer 20
-
£9,978 GBP
$13,369 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
£11,141 GBP
ZAR 241,159 ZAR
View
B
Retailer 22
-
£11,843 GBP
View
Most Expensive
C
NZ Jewellers
33aebb21-a78c-4d06-b3fd-36e64ca466cd · Oct 30
£12,639 GBP
$16,935 USD
View
22 more retailers have this diamond
Prices start from £6,743 GBPSave up to £5,896 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
1.50ct Radiant
£6,743 GBP