Round|Natural|GIA

1.30ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2546175239

Certificate GIA 2546175239

Diamond specifications and retailer prices

From £1,515 GBP
As of November 5, 2026
Save £1,387 GBP (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,826 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2546175239. Listed at 10 retailers as of November 4, 2026, with a 92% 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

1.30
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2546175239
Dimensions6.94 × 6.89 × 4.32 mm
L/W Ratio1.01
Star length50%
Top View
6.94 mm6.89 mm1.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546175239
Side View
Table 59.0%Crown 36°GirdlePavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
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 5
Current: £1,906 GBP|Low: £1,515 GBP|High: £3,304 GBP|Avg: £2,323 GBP|-14.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 4£1,515 GBP
Retailer 5£1,903 GBP
Retailer 1£1,906 GBP
Retailer 2£2,126 GBP
Retailer 6£2,242 GBP
Retailer 3£2,902 GBP

38 data points across 6 retailers

10 retailers£1,515 GBP to £2,902 GBP

A
Cheapest Retailer
-
£1,515 GBP
Retailer 2
-
£1,830 GBP
View
Price last confirmed 29 days ago
Retailer 3
-
£1,830 GBP
View
Price last confirmed 29 days ago
Retailer 4
-
£1,903 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
£1,906 GBP
View
Retailer 6
-
£1,915 GBP
View
Price last confirmed 38 days ago
Retailer 7
-
£2,112 GBP
View
Price last confirmed 38 days ago
B+
Retailer 8
-
£2,126 GBP
View
B
Retailer 9
-
£2,902 GBP
View
Most Expensive
NZ Jewellers
5673da98-dce3-4db0-af28-f02d05cbee02 · Sep 26
£3,826 GBP
$5,150 USD
View
Price last confirmed 40 days ago
9 more retailers have this diamond
Prices start from £1,515 GBPSave up to £1,387 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
1.30ct Round
£1,515 GBP