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Round|Natural|GIA

1.30ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7551135455

Certificate GIA 7551135455

Diamond specifications and retailer prices

From £2,902 GBP
As of November 6, 2026
Save £2,879 GBP (50%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £6,341 GBP at NZ Jewellers · As of October 14, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7551135455. Listed at 20 retailers as of November 4, 2026, with a 99% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7551135455
Dimensions6.96 × 6.90 × 4.32 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.96 mm6.90 mm1.30 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551135455
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

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: £3,483 GBP|Low: £2,030 GBP|High: £5,892 GBP|Avg: £3,808 GBP|+71.6%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 7£2,902 GBP
Retailer 6£3,044 GBP
Retailer 4£3,127 GBP
Retailer 9£3,278 GBP
Retailer 2£3,298 GBP
Retailer 1£3,483 GBP
Retailer 19£3,490 GBP
Retailer 15£3,561 GBP
Retailer 3£3,564 GBP
Retailer 18£3,564 GBP
Retailer 11£3,598 GBP
Retailer 10£3,683 GBP
Retailer 8£3,771 GBP
Retailer 5£4,019 GBP
Retailer 13£4,037 GBP
Retailer 14£4,087 GBP
Retailer 12£4,441 GBP
Retailer 16£5,781 GBP
Retailer 17£5,868 GBP

22 data points across 19 retailers

20 retailers£2,902 GBP to £5,781 GBP

A
Cheapest Retailer
-
£2,902 GBP
B+
Retailer 2
-
£3,044 GBP
View
Final sale: no returns
B+
Retailer 3
-
£3,127 GBP
View
B+
Retailer 4
-
£3,278 GBP
View
Retailer 5
-
£3,298 GBP
View
Price last confirmed 23 days ago
B+
Retailer 6
-
£3,483 GBP
View
B+
Retailer 7
-
£3,490 GBP
View
B+
Retailer 8
-
£3,561 GBP
View
B+
Retailer 9
-
£3,564 GBP
View
B+
Retailer 10
-
£3,564 GBP
View
B
Retailer 11
-
£3,683 GBP
View
B
Retailer 12
-
£3,771 GBP
View
Retailer 13
-
£3,805 GBP
View
Price last confirmed 24 days ago
Retailer 14
-
£4,019 GBP
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£4,037 GBP
View
B+
Retailer 16
-
£4,087 GBP
View
B
Retailer 17
-
£4,441 GBP
View
B
Retailer 18
-
£5,781 GBP
View
Retailer 19
-
£5,868 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
b9d3379d-b903-40f9-a188-a9709c2d832f · Oct 14
£6,341 GBP
$8,488 USD
View
Price last confirmed 23 days ago
19 more retailers have this diamond
Prices start from £2,902 GBPSave up to £2,879 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
£2,902 GBP