Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1543856619

Certificate GIA 1543856619

Diamond specifications and retailer prices

From £3,153 GBP
As of November 2, 2026
21 retailers carry this diamond
Most expensive: £5,111 GBP at NZ Jewellers · As of October 27, 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 1543856619. Listed at 21 retailers as of November 3, 2026, with a relatively tight 0% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1543856619
Dimensions6.93 × 6.89 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.93 mm6.89 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543856619
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £5,111 GBP|Low: £2,199 GBP|High: £5,272 GBP|Avg: £3,084 GBP|-0.8%
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 3, 2026
Retailer 11£2,199 GBP
Retailer 17£2,359 GBP
Retailer 6£2,387 GBP
Retailer 8£2,441 GBP
Retailer 7£2,454 GBP
Retailer 9£2,555 GBP
Retailer 21£2,563 GBP
Retailer 5£2,658 GBP
Retailer 12£2,658 GBP
Retailer 10£2,760 GBP
Retailer 18£2,838 GBP
Retailer 20£2,964 GBP
Retailer 19£3,011 GBP
Retailer 3£3,067 GBP
Retailer 2£3,153 GBP
Retailer 13£3,153 GBP
Retailer 16£3,233 GBP
Retailer 15£3,347 GBP
Retailer 22£3,485 GBP
Retailer 4£3,572 GBP
Retailer 14£4,913 GBP
NZ Jewellers£5,111 GBP

24 data points across 22 retailers

21 retailers£3,153 GBP to £3,153 GBP

Retailer 1
-
£2,199 GBP
Price last confirmed 8 days ago
Retailer 2
-
£2,359 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£2,387 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£2,441 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£2,555 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£2,563 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£2,658 GBP
View
Price last confirmed 12 days ago
Retailer 8
-
£2,658 GBP
View
Price last confirmed 11 days ago
Retailer 9
-
£2,760 GBP
View
Price last confirmed 12 days ago
Retailer 10
-
£2,838 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
£2,964 GBP
View
Price last confirmed 9 days ago
Retailer 12
-
£3,011 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£3,067 GBP
View
Price last confirmed 10 days ago
B+
Retailer 14
-
£3,153 GBP
View
B+
Retailer 15
-
£3,153 GBP
View
Retailer 16
-
£3,233 GBP
View
Price last confirmed 9 days ago
Retailer 17
-
£3,347 GBP
View
Price last confirmed 14 days ago
Retailer 18
-
£3,365 GBP
View
Price last confirmed 33 days ago
Retailer 19
-
£3,572 GBP
View
Price last confirmed 10 days ago
Retailer 20
-
£4,913 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
5bfc9080-0353-4531-934b-2b0baa6d6605 · Oct 27
£5,111 GBP
$6,841 USD
View
Price last confirmed 10 days ago
20 more retailers have this diamond
Prices start from £3,153 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.

B+
1.30ct Round
£3,153 GBP