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Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 2558742615

Certificate GIA 2558742615

Diamond specifications and retailer prices

From £3,477 GBP
HK$36,400 HKD
As of November 1, 2026
Save £3,854 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £7,760 GBP at NZ Jewellers · As of October 17, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558742615. Listed at 21 retailers as of October 28, 2026, with a 111% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558742615
Dimensions7.53 × 5.77 × 3.96 mm
L/W Ratio1.31
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
7.53 mm5.77 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558742615
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.7%

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: £3,706 GBP|Low: £3,477 GBP|High: £7,365 GBP|Avg: £5,078 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6£3,477 GBP
Retailer 1£3,706 GBP
Retailer 9£4,072 GBP
Retailer 10£4,282 GBP
Retailer 4£4,414 GBP
Retailer 2£4,611 GBP
Retailer 7£5,070 GBP
Retailer 5£5,700 GBP
Retailer 3£6,836 GBP
Retailer 8£7,332 GBP

32 data points across 10 retailers

21 retailers£3,477 GBP to £7,332 GBP

A
Cheapest Retailer
-
£3,477 GBP
HK$36,400 HKD
A
Retailer 2
-
£3,706 GBP
₹472,908 INR
View
A
Retailer 3
-
£3,871 GBP
$5,187 USD
View
A
Retailer 4
-
£3,968 GBP
SGD 7,185 SGD
View
A
Retailer 5
-
£4,072 GBP
SGD 7,373 SGD
View
A
Retailer 6
-
£4,234 GBP
$5,673 USD
View
A
Retailer 7
-
£4,235 GBP
$5,675 USD
View
A
Retailer 8
-
£4,282 GBP
$5,737 USD
View
Final sale: no returns
A
Retailer 9
-
£4,414 GBP
View
Retailer 10
-
£4,611 GBP
A$9,504 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
£4,639 GBP
$6,216 USD
View
Price last confirmed 17 days ago
Retailer 12
-
£4,639 GBP
$6,216 USD
View
Price last confirmed 16 days ago
Retailer 13
-
£4,639 GBP
$6,216 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
£4,757 GBP
$6,374 USD
View
B+
Retailer 15
-
£4,908 GBP
A$10,118 AUD
View
B+
Retailer 16
-
£5,070 GBP
€6,470 EUR
View
Retailer 17
-
£5,353 GBP
$7,173 USD
View
Price last confirmed 14 days ago
B+
Retailer 18
-
£5,700 GBP
ZAR 123,390 ZAR
View
B+
Retailer 19
-
£6,836 GBP
View
B
Retailer 20
-
£7,332 GBP
View
Most Expensive
NZ Jewellers
fe7edb97-4bb4-46b2-ae0e-dfea42feccae · Oct 17
£7,760 GBP
$10,397 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from £3,477 GBPSave up to £3,854 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
£3,477 GBP