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Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 2567450930

Certificate GIA 2567450930

Diamond specifications and retailer prices

From £3,075 GBP
$4,120 USD
As of November 1, 2026
Save £3,625 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,119 GBP at NZ Jewellers · As of October 14, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567450930. Listed at 20 retailers as of October 29, 2026, with a 118% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2567450930
Dimensions7.43 × 5.68 × 3.95 mm
L/W Ratio1.31
Girdle conditionPolished
Top View
7.43 mm5.68 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567450930
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.4%

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: Nov 1
Current: £7,119 GBP|Low: £2,971 GBP|High: £7,119 GBP|Avg: £4,235 GBP
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 13£3,075 GBP
Retailer 19£3,076 GBP
Retailer 7£3,273 GBP
Retailer 6£3,382 GBP
Retailer 4£3,428 GBP
Retailer 16£3,454 GBP
Retailer 11£3,499 GBP
Retailer 10£3,564 GBP
Retailer 9£3,608 GBP
Retailer 8£3,661 GBP
Retailer 2£3,709 GBP
Retailer 12£3,807 GBP
Retailer 17£3,826 GBP
Retailer 15£3,971 GBP
Retailer 21£4,012 GBP
Retailer 14£4,295 GBP
Retailer 20£4,663 GBP
Retailer 18£5,144 GBP
Retailer 5£6,344 GBP
Retailer 3£6,700 GBP
NZ Jewellers£7,119 GBP

17 data points across 21 retailers

20 retailers£3,075 GBP to £6,700 GBP

A
Cheapest Retailer
-
£3,075 GBP
$4,120 USD
A
Retailer 2
-
£3,076 GBP
HK$32,200 HKD
View
A
Retailer 3
-
£3,273 GBP
$4,386 USD
View
A
Retailer 4
-
£3,382 GBP
$4,531 USD
View
A
Retailer 5
-
£3,428 GBP
$4,593 USD
View
A
Retailer 6
-
£3,454 GBP
€4,407 EUR
View
A
Retailer 7
-
£3,499 GBP
$4,688 USD
View
Final sale: no returns
A
Retailer 8
-
£3,564 GBP
$4,775 USD
View
A
Retailer 9
-
£3,608 GBP
A$7,437 AUD
View
A
Retailer 10
-
£3,661 GBP
$4,905 USD
View
A
Retailer 11
-
£3,709 GBP
$4,970 USD
View
Retailer 12
-
£3,807 GBP
SGD 6,893 SGD
View
Price last confirmed 17 days ago
A
Retailer 13
-
£3,826 GBP
View
A
Retailer 14
-
£3,971 GBP
View
A
Retailer 15
-
£4,012 GBP
$5,376 USD
View
B+
Retailer 16
-
£4,663 GBP
€5,950 EUR
View
B+
Retailer 17
-
£5,144 GBP
ZAR 111,341 ZAR
View
B
Retailer 18
-
£6,344 GBP
$8,501 USD
View
B
Retailer 19
-
£6,700 GBP
View
Most Expensive
NZ Jewellers
76fc132b-6cf7-488f-ba27-598bdc682ed1 · Oct 14
£7,119 GBP
$9,539 USD
View
Price last confirmed 18 days ago
19 more retailers have this diamond
Prices start from £3,075 GBPSave up to £3,625 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
£3,075 GBP