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Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2567153963

Certificate GIA 2567153963

Diamond specifications and retailer prices

From £1,146 GBP
As of November 5, 2026
Save £2,270 GBP (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,416 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2567153963. Listed at 16 retailers as of November 5, 2026, with prices from £1,146 to £3,416, a £2,270 spread on the same certified stone. NZ Jewellers lists it at £3,416. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2567153963
Dimensions6.91 × 6.97 × 4.39 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle
Top View
6.91 mm6.97 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2567153963
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.3%

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: £1,466 GBP|Low: £1,146 GBP|High: £2,896 GBP|Avg: £1,896 GBP|-7.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7£1,146 GBP
Retailer 1£1,466 GBP
Retailer 3£1,635 GBP
Retailer 4£1,655 GBP
Retailer 2£1,675 GBP
Retailer 10£1,741 GBP
Retailer 6£1,768 GBP
Retailer 5£1,948 GBP
Retailer 8£1,994 GBP
Retailer 9£2,854 GBP

31 data points across 10 retailers

16 retailers£1,146 GBP to £3,416 GBP

A
Cheapest Retailer
-
£1,146 GBP
A
Retailer 2
-
£1,466 GBP
View
A
Retailer 3
-
£1,476 GBP
View
A
Retailer 4
-
£1,634 GBP
View
A
Retailer 5
-
£1,635 GBP
View
A
Retailer 6
-
£1,646 GBP
View
A
Retailer 7
-
£1,655 GBP
View
A
Retailer 8
-
£1,675 GBP
View
Retailer 9
-
£1,694 GBP
View
Price last confirmed 38 days ago
A
Retailer 10
-
£1,709 GBP
View
A
Retailer 11
-
£1,741 GBP
View
A
Retailer 12
-
£1,768 GBP
View
A
Retailer 13
-
£1,948 GBP
View
B+
Retailer 14
-
£1,994 GBP
View
B
Retailer 15
-
£2,854 GBP
View
Most Expensive
B
NZ Jewellers
971c76ed-7970-4c2e-8b78-b3f5b9ec9263 · Nov 5
£3,416 GBP
$4,597 USD
View
15 more retailers have this diamond
Prices start from £1,146 GBPSave up to £2,270 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
£1,146 GBP