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Round|Natural|GIA

1.50ct M SI1 Round Natural Diamond

VG • M/SI1 • GIA 2558114419

Certificate GIA 2558114419

Diamond specifications and retailer prices

From £1,560 GBP
As of November 4, 2026
Save £2,606 GBP (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,165 GBP at NZ Jewellers · As of November 5, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2558114419. Listed at 14 retailers as of November 4, 2026, with prices from £1,560 to £4,165, a £2,606 spread on the same certified stone. NZ Jewellers lists it at £4,165. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2558114419
Dimensions7.04 × 7.13 × 4.62 mm
L/W Ratio1.01
Top View
7.04 mm7.13 mm1.50 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2558114419
Side View
Table 59.0%Crown 37°Girdle: THN-THKPavilion 41.2°Culet: NoneDepth 65.2%

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 4
Current: £4,165 GBP|Low: £1,550 GBP|High: £4,165 GBP|Avg: £2,138 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
November 5, 2026
Retailer 10£1,560 GBP
Retailer 7£1,586 GBP
Retailer 5£1,784 GBP
Retailer 3£1,961 GBP
Retailer 12£1,992 GBP
Retailer 14£1,992 GBP
Retailer 9£1,999 GBP
Retailer 13£2,068 GBP
Retailer 11£2,097 GBP
Retailer 4£2,299 GBP
Retailer 8£2,429 GBP
Retailer 2£2,431 GBP
Retailer 6£3,016 GBP
NZ Jewellers£4,165 GBP

44 data points across 14 retailers

14 retailers£1,560 GBP to £4,165 GBP

B+
Cheapest Retailer
-
£1,560 GBP
A
Retailer 2
-
£1,586 GBP
View
B+
Retailer 3
-
£1,784 GBP
View
B+
Retailer 4
-
£1,961 GBP
View
B+
Retailer 5
-
£1,992 GBP
View
Retailer 6
-
£1,992 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,999 GBP
View
B+
Retailer 8
-
£2,068 GBP
View
B+
Retailer 9
-
£2,097 GBP
View
B+
Retailer 10
-
£2,299 GBP
View
B
Retailer 11
-
£2,429 GBP
View
B+
Retailer 12
-
£2,431 GBP
View
B
Retailer 13
-
£3,016 GBP
View
Most Expensive
C
NZ Jewellers
5e3a2bb2-8e81-4293-bf97-d0fb365e2fd7 · Nov 5
£4,165 GBP
$5,606 USD
View
13 more retailers have this diamond
Prices start from £1,560 GBPSave up to £2,606 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
£1,560 GBP