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Round|Natural|GIA

1.30ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6555290226

Certificate GIA 6555290226

Diamond specifications and retailer prices

From £1,065 GBP
As of November 4, 2026
Save £2,404 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,469 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555290226. Listed at 14 retailers as of November 4, 2026, with prices from £1,065 to £3,469, a £2,404 spread on the same certified stone. NZ Jewellers lists it at £3,469. 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555290226
Dimensions6.94 × 6.99 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.94 mm6.99 mm1.30 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555290226
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,469 GBP|Low: £1,065 GBP|High: £3,604 GBP|Avg: £1,673 GBP|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 5, 2026
Retailer 4£1,065 GBP
Retailer 7£1,074 GBP
Retailer 9£1,297 GBP
Retailer 10£1,384 GBP
Retailer 14£1,422 GBP
Retailer 6£1,458 GBP
Retailer 11£1,488 GBP
Retailer 8£1,550 GBP
Retailer 3£1,562 GBP
Retailer 5£1,602 GBP
Retailer 12£1,641 GBP
Retailer 2£1,823 GBP
Retailer 13£2,059 GBP
NZ Jewellers£3,469 GBP

31 data points across 14 retailers

14 retailers£1,065 GBP to £3,469 GBP

A
Cheapest Retailer
-
£1,065 GBP
A
Retailer 2
-
£1,074 GBP
View
A
Retailer 3
-
£1,297 GBP
View
A
Retailer 4
-
£1,384 GBP
View
A
Retailer 5
-
£1,422 GBP
View
A
Retailer 6
-
£1,458 GBP
View
B+
Retailer 7
-
£1,488 GBP
View
B+
Retailer 8
-
£1,550 GBP
View
B+
Retailer 9
-
£1,562 GBP
View
B+
Retailer 10
-
£1,602 GBP
View
B+
Retailer 11
-
£1,641 GBP
View
B+
Retailer 12
-
£1,823 GBP
View
B+
Retailer 13
-
£2,059 GBP
View
Most Expensive
B
NZ Jewellers
8dc4c868-ae52-4f66-9208-630c9148b8d2 · Nov 5
£3,469 GBP
$4,669 USD
View
13 more retailers have this diamond
Prices start from £1,065 GBPSave up to £2,404 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
£1,065 GBP