Round|Natural|GIA

1.36ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2517422431

Shape and cutting style on the report: Round brilliant

Certificate GIA 2517422431

Diamond specifications and retailer prices

From £1,852 GBP
As of November 6, 2026
Save £1,953 GBP (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,975 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.36ct natural round diamond

This 1.36ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2517422431. Listed at 19 retailers as of November 4, 2026, with a 105% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.36
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2517422431
Dimensions7.01 × 7.06 × 4.40 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.01 mm7.06 mm1.36 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2517422431
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,183 GBP|Low: £1,852 GBP|High: £3,862 GBP|Avg: £2,480 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4£1,852 GBP
Retailer 5£1,941 GBP
Retailer 2£2,028 GBP
Retailer 10£2,067 GBP
Retailer 11£2,162 GBP
Retailer 1£2,183 GBP
Retailer 6£2,344 GBP
Retailer 12£2,402 GBP
Retailer 7£2,524 GBP
Retailer 3£2,649 GBP
Retailer 8£2,785 GBP
Retailer 13£3,323 GBP
Retailer 9£3,805 GBP

41 data points across 13 retailers

19 retailers£1,852 GBP to £3,805 GBP

A
Cheapest Retailer
-
£1,852 GBP
A
Retailer 2
-
£1,941 GBP
View
B+
Retailer 3
-
£2,028 GBP
View
Retailer 4
-
£2,067 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£2,067 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,067 GBP
View
Price last confirmed 21 days ago
B+
Retailer 7
-
£2,092 GBP
View
Retailer 8
-
£2,146 GBP
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£2,162 GBP
View
B+
Retailer 10
-
£2,183 GBP
View
B+
Retailer 11
-
£2,344 GBP
View
Retailer 12
-
£2,385 GBP
View
Price last confirmed 16 days ago
B+
Retailer 13
-
£2,402 GBP
View
B+
Retailer 14
-
£2,524 GBP
View
Retailer 15
-
£2,649 GBP
View
Price last confirmed 22 days ago
B
Retailer 16
-
£2,785 GBP
View
B
Retailer 17
-
£3,323 GBP
View
B
Retailer 18
-
£3,805 GBP
View
Most Expensive
NZ Jewellers
09e16cc2-2aa7-4431-a308-20b2e9fc9efe · Oct 20
£3,975 GBP
$5,350 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from £1,852 GBPSave up to £1,953 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
1.36ct Round
£1,852 GBP