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Round|Natural|GIA

1.50ct K I1 Round Natural Diamond

EX • K/I1 • GIA 2558416995

Certificate GIA 2558416995

Diamond specifications and retailer prices

From £1,702 GBP
As of November 6, 2026
Save £1,746 GBP (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,583 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 K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2558416995. Listed at 14 retailers as of November 4, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2558416995
Dimensions7.28 × 7.32 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.28 mm7.32 mm1.50 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558416995
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 6
Current: £4,141 GBP|Low: £1,645 GBP|High: £4,141 GBP|Avg: £2,523 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
November 5, 2026
Retailer 8£1,702 GBP
Retailer 5£1,796 GBP
Retailer 6£1,854 GBP
Retailer 12£1,892 GBP
Retailer 10£1,973 GBP
Retailer 4£2,073 GBP
Retailer 9£2,097 GBP
Retailer 3£2,392 GBP
Retailer 2£2,575 GBP
Retailer 11£3,020 GBP
Retailer 7£3,448 GBP
NZ Jewellers£4,141 GBP

27 data points across 12 retailers

14 retailers£1,702 GBP to £3,448 GBP

A
Cheapest Retailer
-
£1,702 GBP
A
Retailer 2
-
£1,796 GBP
View
A
Retailer 3
-
£1,854 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,973 GBP
View
Retailer 5
-
£2,073 GBP
View
Price last confirmed 21 days ago
Retailer 6
-
£2,073 GBP
View
Price last confirmed 29 days ago
A
Retailer 7
-
£2,097 GBP
View
Retailer 8
-
£2,152 GBP
View
Price last confirmed 22 days ago
Retailer 9
-
£2,392 GBP
View
Price last confirmed 28 days ago
B+
Retailer 10
-
£2,575 GBP
View
B
Retailer 11
-
£3,448 GBP
View
Retailer 12
-
£4,141 GBP
View
Price last confirmed 42 days ago
Retailer 13
-
£4,334 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
c7a6efa9-6a5a-437c-9a7d-adf5314be66a · Oct 17
£4,583 GBP
$6,168 USD
View
Price last confirmed 20 days ago
13 more retailers have this diamond
Prices start from £1,702 GBPSave up to £1,746 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
£1,702 GBP