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Round|Natural|GIA

1.45ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1519713908

Certificate GIA 1519713908

Diamond specifications and retailer prices

From £1,735 GBP
As of November 5, 2026
Save £419 GBP (19%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,632 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.45ct natural round diamond

This 1.45ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519713908. Listed at 8 retailers as of November 5, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.45
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1519713908
Dimensions7.41 × 7.40 × 4.34 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Crystal
Top View
7.41 mm7.40 mm1.45 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519713908
Side View
Table 62.0%Crown 33°GirdlePavilion 41°Culet: NoneDepth 58.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £2,154 GBP|Low: £1,569 GBP|High: £2,170 GBP|Avg: £1,890 GBP|+3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 4£1,569 GBP
Retailer 3£1,735 GBP
Retailer 2£2,120 GBP
Retailer 1£2,154 GBP

24 data points across 4 retailers

8 retailers£1,735 GBP to £2,154 GBP

B+
Cheapest Retailer
-
£1,735 GBP
Retailer 2
-
£1,738 GBP
View
Price last confirmed 29 days ago
Retailer 3
-
£1,738 GBP
View
Price last confirmed 29 days ago
Retailer 4
-
£1,818 GBP
View
Price last confirmed 38 days ago
Retailer 5
-
£2,005 GBP
View
Price last confirmed 38 days ago
B
Retailer 6
-
£2,120 GBP
View
B
Retailer 7
-
£2,154 GBP
View
Most Expensive
NZ Jewellers
9cc915c6-791f-4bda-9685-d12373569099 · Sep 26
£3,632 GBP
$4,889 USD
View
Price last confirmed 40 days ago
7 more retailers have this diamond
Prices start from £1,735 GBPSave up to £419 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.

B+
1.45ct Round
£1,735 GBP