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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7551404033

Certificate GIA 7551404033

Diamond specifications and retailer prices

From £2,251 GBP
As of November 6, 2026
Save £2,939 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,190 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7551404033. Listed at 19 retailers as of November 5, 2026, with prices from £2,251 to £5,190, a £2,939 spread on the same certified stone. NZ Jewellers lists it at £5,190. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7551404033
Dimensions6.94 × 6.97 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.94 mm6.97 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551404033
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

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 6
Current: £5,190 GBP|Low: £2,235 GBP|High: £5,270 GBP|Avg: £3,272 GBP|-1.5%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 2£2,251 GBP
Retailer 16£2,510 GBP
Retailer 5£2,622 GBP
Retailer 9£2,669 GBP
Retailer 6£2,749 GBP
Retailer 14£2,843 GBP
Retailer 10£2,934 GBP
Retailer 4£2,979 GBP
Retailer 7£2,979 GBP
Retailer 13£2,999 GBP
Retailer 12£3,089 GBP
Retailer 11£3,186 GBP
Retailer 15£3,316 GBP
Retailer 3£3,406 GBP
Retailer 18£3,437 GBP
Retailer 17£3,636 GBP
Retailer 8£4,906 GBP
NZ Jewellers£5,190 GBP

25 data points across 18 retailers

19 retailers£2,251 GBP to £5,190 GBP

A
Cheapest Retailer
-
£2,251 GBP
A
Retailer 2
-
£2,510 GBP
View
A
Retailer 3
-
£2,622 GBP
View
A
Retailer 4
-
£2,669 GBP
View
B+
Retailer 5
-
£2,749 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,843 GBP
View
Retailer 7
-
£2,934 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,979 GBP
View
B+
Retailer 9
-
£2,979 GBP
View
B+
Retailer 10
-
£2,999 GBP
View
B+
Retailer 11
-
£3,089 GBP
View
Retailer 12
-
£3,166 GBP
View
Price last confirmed 29 days ago
B+
Retailer 13
-
£3,186 GBP
View
B+
Retailer 14
-
£3,316 GBP
View
B+
Retailer 15
-
£3,406 GBP
View
B+
Retailer 16
-
£3,437 GBP
View
B+
Retailer 17
-
£3,636 GBP
View
B
Retailer 18
-
£4,906 GBP
View
Most Expensive
B
NZ Jewellers
8b23a696-8712-4267-9c29-99c8d121a534 · Nov 5
£5,190 GBP
$6,947 USD
View
18 more retailers have this diamond
Prices start from £2,251 GBPSave up to £2,939 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
£2,251 GBP