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Round|Natural|GIA

1.50ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 6532430418

Certificate GIA 6532430418

Diamond specifications and retailer prices

From £1,757 GBP
As of November 6, 2026
Save £600 GBP (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,959 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded N colour (tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6532430418. Listed at 9 retailers as of November 4, 2026, with a 34% 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
N
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6532430418
Dimensions7.30 × 7.25 × 4.54 mm
L/W Ratio1.01
Top View
7.30 mm7.25 mm1.50 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6532430418
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: £1,794 GBP|Low: £1,757 GBP|High: £3,169 GBP|Avg: £2,333 GBP|-10.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£1,757 GBP
Retailer 1£1,794 GBP
Retailer 4£2,327 GBP
Retailer 3£2,357 GBP
Retailer 5£3,169 GBP

26 data points across 5 retailers

9 retailers£1,757 GBP to £2,357 GBP

A
Cheapest Retailer
-
£1,757 GBP
B+
Retailer 2
-
£1,794 GBP
View
Retailer 3
-
£1,894 GBP
View
Price last confirmed 21 days ago
Retailer 4
-
£1,894 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£1,981 GBP
View
Price last confirmed 22 days ago
Retailer 6
-
£2,185 GBP
View
Price last confirmed 19 days ago
B
Retailer 7
-
£2,327 GBP
View
B
Retailer 8
-
£2,357 GBP
View
Most Expensive
NZ Jewellers
e52c0f87-12d7-4361-8fb4-c1e041dc6f94 · Oct 17
£3,959 GBP
$5,328 USD
View
Price last confirmed 19 days ago
8 more retailers have this diamond
Prices start from £1,757 GBPSave up to £600 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 Round
£1,757 GBP