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Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 5566485725

Certificate GIA 5566485725

Diamond specifications and retailer prices

From £3,609 GBP
As of November 6, 2026
Save £3,109 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £6,718 GBP at NZ Jewellers · As of November 3, 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 5566485725. Listed at 8 retailers as of November 3, 2026, with prices from £3,609 to £6,718, a £3,109 spread on the same certified stone. NZ Jewellers lists it at £6,718. 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
FluorescenceFaint
Crown angle53.6°
Pavilion angle36.65°
OriginNatural
Grading LabGIA
CertificateGIA 5566485725
Dimensions7.25 × 5.72 × 4.03 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
7.25 mm5.72 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566485725
Side View
Table 71.0%Crown 53.6°GirdlePavilion 36.65°Culet: NoneDepth 70.4%

Caratlytics Score

How it works →
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: Nov 6
Current: £6,718 GBP|Low: £3,609 GBP|High: £6,766 GBP|Avg: £4,583 GBP|-0.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7£3,609 GBP
Retailer 4£3,784 GBP
Retailer 2£3,907 GBP
Retailer 3£4,016 GBP
Retailer 6£4,016 GBP
Retailer 8£4,078 GBP
Retailer 5£6,432 GBP
NZ Jewellers£6,718 GBP

25 data points across 8 retailers

8 retailers£3,609 GBP to £6,718 GBP

A
Cheapest Retailer
-
£3,609 GBP
A
Retailer 2
-
£3,784 GBP
View
A
Retailer 3
-
£3,907 GBP
View
A
Retailer 4
-
£4,016 GBP
View
A
Retailer 5
-
£4,016 GBP
View
Retailer 6
-
£4,078 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£6,432 GBP
View
Price last confirmed 9 days ago
Most Expensive
B+
NZ Jewellers
1e726e3e-1673-418b-be9a-d7b91988b4c4 · Nov 3
£6,718 GBP
$8,992 USD
View
7 more retailers have this diamond
Prices start from £3,609 GBPSave up to £3,109 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
£3,609 GBP