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Round|Natural|GIA

1.51ct M I1 Round Natural Diamond

EX • M/I1 • GIA 5533800291

Certificate GIA 5533800291

Diamond specifications and retailer prices

From £1,949 GBP
As of November 5, 2026
Save £2,236 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,185 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 5533800291. Listed at 8 retailers as of November 5, 2026, with prices from £1,949 to £4,185, a £2,236 spread on the same certified stone. NZ Jewellers lists it at £4,185. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
M
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5533800291
Dimensions7.34 × 7.29 × 4.55 mm
L/W Ratio1.01
Top View
7.34 mm7.29 mm1.51 ctM / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5533800291
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £4,185 GBP|Low: £1,949 GBP|High: £4,416 GBP|Avg: £2,612 GBP|-5.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8£1,949 GBP
Retailer 7£2,015 GBP
Retailer 4£2,176 GBP
Retailer 6£2,176 GBP
Retailer 5£2,260 GBP
Retailer 3£2,511 GBP
Retailer 2£2,789 GBP
NZ Jewellers£4,185 GBP

17 data points across 8 retailers

8 retailers£1,949 GBP to £4,185 GBP

B+
Cheapest Retailer
-
£1,949 GBP
B+
Retailer 2
-
£2,015 GBP
View
Retailer 3
-
£2,176 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£2,176 GBP
View
B
Retailer 5
-
£2,260 GBP
View
B
Retailer 6
-
£2,511 GBP
View
B
Retailer 7
-
£2,789 GBP
View
Most Expensive
C
NZ Jewellers
21a5dd8e-cfef-404e-aaf0-c8c8891507db · Nov 5
£4,185 GBP
$5,632 USD
View
7 more retailers have this diamond
Prices start from £1,949 GBPSave up to £2,236 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+
1.51ct Round
£1,949 GBP