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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2436486853

Certificate GIA 2436486853

Diamond specifications and retailer prices

From £5,977 GBP
As of November 1, 2026
Save £5,207 GBP (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £11,184 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2436486853. Listed at 17 retailers as of November 1, 2026, with prices from £5,977 to £11,184, a £5,207 spread on the same certified stone. NZ Jewellers lists it at £11,184. 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

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2436486853
Dimensions7.36 × 7.32 × 4.54 mm
L/W Ratio1.01
Top View
7.36 mm7.32 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2436486853
Side View
Table 55.0%Crown 34°Girdle: THN-THKPavilion 40.6°Culet: NoneDepth 61.8%

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 1
Current: £11,184 GBP|Low: £5,977 GBP|High: £11,184 GBP|Avg: £8,183 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£5,977 GBP
Retailer 7£6,711 GBP
Retailer 2£7,217 GBP
Retailer 9£7,270 GBP
Retailer 6£7,382 GBP
Retailer 3£8,004 GBP
Retailer 8£8,388 GBP
Retailer 4£10,452 GBP
NZ Jewellers£11,184 GBP

42 data points across 9 retailers

17 retailers£5,977 GBP to £11,184 GBP

B+
Cheapest Retailer
-
£5,977 GBP
B+
Retailer 2
-
£6,096 GBP
View
B
Retailer 3
-
£6,283 GBP
View
B
Retailer 4
-
£6,502 GBP
View
Retailer 5
-
£6,711 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£7,217 GBP
View
B
Retailer 7
-
£7,270 GBP
View
B
Retailer 8
-
£7,382 GBP
View
B
Retailer 9
-
£7,731 GBP
View
B
Retailer 10
-
£7,905 GBP
View
B
Retailer 11
-
£7,905 GBP
View
B
Retailer 12
-
£8,004 GBP
View
B
Retailer 13
-
£8,173 GBP
View
B
Retailer 14
-
£8,388 GBP
View
Retailer 15
-
£8,832 GBP
View
Price last confirmed 14 days ago
B
Retailer 16
-
£10,452 GBP
View
Most Expensive
B
NZ Jewellers
0c32f121-0fbc-460c-a3f1-404ed955b21d · Nov 5
£11,184 GBP
$15,053 USD
View
16 more retailers have this diamond
Prices start from £5,977 GBPSave up to £5,207 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
£5,977 GBP