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Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6551678903

Certificate GIA 6551678903

Diamond specifications and retailer prices

From £2,489 GBP
HK$25,900 HKD
As of October 29, 2026
Save £3,031 GBP (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,121 GBP at NZ Jewellers · As of September 25, 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 6551678903. Listed at 17 retailers as of October 29, 2026, with a 122% 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551678903
Dimensions6.98 × 6.93 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.98 mm6.93 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551678903
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

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 29
Current: £2,865 GBP|Low: £2,489 GBP|High: £5,611 GBP|Avg: £3,453 GBP|-0.6%
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
October 30, 2026
Retailer 15£2,489 GBP
Retailer 13£2,667 GBP
Retailer 14£2,779 GBP
Retailer 1£2,865 GBP
Retailer 16£2,883 GBP
Retailer 3£2,970 GBP
Retailer 4£2,981 GBP
Retailer 6£3,032 GBP
Retailer 10£3,187 GBP
Retailer 2£3,306 GBP
Retailer 8£3,509 GBP
Retailer 7£3,786 GBP
Retailer 11£4,198 GBP
Retailer 5£4,400 GBP
Retailer 12£5,126 GBP
Retailer 9£5,521 GBP

31 data points across 16 retailers

17 retailers£2,489 GBP to £5,521 GBP

A
Cheapest Retailer
-
£2,489 GBP
HK$25,900 HKD
A
Retailer 2
-
£2,667 GBP
$3,552 USD
View
A
Retailer 3
-
£2,779 GBP
$3,701 USD
View
A
Retailer 4
-
£2,865 GBP
€3,634 EUR
View
A
Retailer 5
-
£2,883 GBP
$3,839 USD
View
Final sale: no returns
A
Retailer 6
-
£2,970 GBP
$3,955 USD
View
A
Retailer 7
-
£2,981 GBP
$3,970 USD
View
A
Retailer 8
-
£3,032 GBP
$4,038 USD
View
A
Retailer 9
-
£3,187 GBP
View
A
Retailer 10
-
£3,289 GBP
A$6,738 AUD
View
A
Retailer 11
-
£3,306 GBP
$4,403 USD
View
Retailer 12
-
£3,509 GBP
A$7,188 AUD
View
Price last confirmed 20 days ago
B+
Retailer 13
-
£4,198 GBP
ZAR 90,324 ZAR
View
B+
Retailer 14
-
£4,400 GBP
$5,860 USD
View
B+
Retailer 15
-
£5,126 GBP
$6,827 USD
View
B+
Retailer 16
-
£5,521 GBP
View
Most Expensive
NZ Jewellers
9a869dfd-3c5c-419e-899d-e93f71b54a19 · Sep 25
£6,121 GBP
$8,151 USD
View
Price last confirmed 34 days ago
16 more retailers have this diamond
Prices start from £2,489 GBPSave up to £3,031 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
£2,489 GBP