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Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2245029391

Certificate GIA 2245029391

Diamond specifications and retailer prices

From £3,449 GBP
$4,621 USD
As of October 28, 2026
Save £2,990 GBP (46%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £7,300 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245029391. Listed at 23 retailers as of October 26, 2026, with a 87% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2245029391
Dimensions7.02 × 7.05 × 4.24 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural, Needle
Top View
7.02 mm7.05 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245029391
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.2%

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: Oct 28
Current: £4,217 GBP|Low: £3,042 GBP|High: £6,578 GBP|Avg: £4,476 GBP|+21.0%
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
October 29, 2026
Retailer 5£3,449 GBP
Retailer 17£3,650 GBP
Retailer 4£3,709 GBP
Retailer 8£3,724 GBP
Retailer 14£3,939 GBP
Retailer 9£3,948 GBP
Retailer 15£4,154 GBP
Retailer 1£4,217 GBP
Retailer 10£4,224 GBP
Retailer 2£4,372 GBP
Retailer 7£4,477 GBP
Retailer 16£4,615 GBP
Retailer 11£4,707 GBP
Retailer 6£4,815 GBP
Retailer 12£5,315 GBP
Retailer 3£6,386 GBP
Retailer 13£6,439 GBP

36 data points across 17 retailers

23 retailers£3,449 GBP to £6,439 GBP

A
Cheapest Retailer
-
£3,449 GBP
$4,621 USD
Retailer 2
-
£3,603 GBP
$4,827 USD
View
Price last confirmed 53 days ago
A
Retailer 3
-
£3,650 GBP
$4,891 USD
View
Final sale: no returns
A
Retailer 4
-
£3,709 GBP
$4,970 USD
View
B+
Retailer 5
-
£3,939 GBP
CA$7,330 CAD
View
Retailer 6
-
£3,954 GBP
$5,298 USD
View
Price last confirmed 22 days ago
Retailer 7
-
£3,954 GBP
$5,298 USD
View
Price last confirmed 18 days ago
Retailer 8
-
£3,954 GBP
$5,298 USD
View
Price last confirmed 31 days ago
B+
Retailer 9
-
£4,154 GBP
$5,566 USD
View
Retailer 10
-
£4,156 GBP
$5,569 USD
View
Price last confirmed 53 days ago
B+
Retailer 11
-
£4,217 GBP
View
B+
Retailer 12
-
£4,224 GBP
View
Retailer 13
-
£4,372 GBP
A$9,012 AUD
View
Price last confirmed 20 days ago
B+
Retailer 14
-
£4,477 GBP
$5,998 USD
View
Retailer 15
-
£4,562 GBP
$6,113 USD
View
Price last confirmed 21 days ago
B+
Retailer 16
-
£4,615 GBP
$6,184 USD
View
B+
Retailer 17
-
£4,707 GBP
€6,007 EUR
View
Retailer 18
-
£4,815 GBP
$6,451 USD
View
Price last confirmed 15 days ago
B+
Retailer 19
-
£5,315 GBP
ZAR 115,049 ZAR
View
Retailer 20
-
£6,276 GBP
$8,409 USD
View
Price last confirmed 59 days ago
B
Retailer 21
-
£6,386 GBP
$8,557 USD
View
B
Retailer 22
-
£6,439 GBP
View
Most Expensive
NZ Jewellers
706707aa-8f58-4f49-90ae-9d7c16d30a3b · Sep 26
£7,300 GBP
$9,781 USD
View
Price last confirmed 33 days ago
22 more retailers have this diamond
Prices start from £3,449 GBPSave up to £2,990 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
£3,449 GBP