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Round|Natural|GIA

1.50ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 5516507747

Certificate GIA 5516507747

Diamond specifications and retailer prices

From £2,011 GBP
As of November 5, 2026
Save £2,684 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,696 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5516507747. Listed at 13 retailers as of November 5, 2026, with prices from £2,011 to £4,696, a £2,684 spread on the same certified stone. NZ Jewellers lists it at £4,696. 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
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5516507747
Dimensions7.26 × 7.29 × 4.48 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.26 mm7.29 mm1.50 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516507747
Side View
Table 60.0%Crown 35°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,696 GBP|Low: £1,373 GBP|High: £4,696 GBP|Avg: £2,445 GBP|+19.4%
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 6, 2026
Retailer 7£1,719 GBP
Retailer 10£2,011 GBP
Retailer 6£2,073 GBP
Retailer 9£2,073 GBP
Retailer 3£2,246 GBP
Retailer 11£2,246 GBP
Retailer 8£2,332 GBP
Retailer 12£2,352 GBP
Retailer 4£2,592 GBP
Retailer 5£2,609 GBP
Retailer 2£2,965 GBP
NZ Jewellers£4,696 GBP

41 data points across 12 retailers

13 retailers£2,011 GBP to £4,696 GBP

Retailer 1
-
£1,719 GBP
Price last confirmed 9 days ago
B+
Retailer 2
-
£2,011 GBP
View
B+
Retailer 3
-
£2,073 GBP
View
B+
Retailer 4
-
£2,073 GBP
View
Final sale: no returns
Retailer 5
-
£2,098 GBP
View
Price last confirmed 68 days ago
B+
Retailer 6
-
£2,246 GBP
View
Retailer 7
-
£2,246 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,332 GBP
View
B+
Retailer 9
-
£2,352 GBP
View
B
Retailer 10
-
£2,592 GBP
View
B
Retailer 11
-
£2,609 GBP
View
B
Retailer 12
-
£2,965 GBP
View
Most Expensive
C
NZ Jewellers
46d3eabe-5e72-44fe-9fa0-2accdc5cbdc9 · Nov 5
£4,696 GBP
$6,320 USD
View
12 more retailers have this diamond
Prices start from £2,011 GBPSave up to £2,684 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+
1.50ct Round
£2,011 GBP