Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2235760608

Certificate GIA 2235760608

Diamond specifications and retailer prices

From £2,672 GBP
As of November 6, 2026
Save £1,418 GBP (35%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £5,840 GBP at NZ Jewellers · As of October 20, 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 2235760608. Listed at 29 retailers as of November 5, 2026, with a 53% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2235760608
Dimensions6.96 × 6.92 × 4.33 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.96 mm6.92 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2235760608
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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: £4,090 GBP|Low: £2,774 GBP|High: £5,403 GBP|Avg: £3,599 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 10£2,774 GBP
Retailer 11£2,802 GBP
Retailer 3£2,891 GBP
Retailer 9£3,037 GBP
Retailer 7£3,214 GBP
Retailer 6£3,374 GBP
Retailer 2£3,575 GBP
Retailer 4£3,748 GBP
Retailer 5£3,769 GBP
Retailer 1£4,090 GBP
Retailer 8£5,346 GBP

33 data points across 11 retailers

29 retailers£2,672 GBP to £4,090 GBP

A
Cheapest Retailer
-
£2,672 GBP
A
Retailer 2
-
£2,802 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,891 GBP
View
B+
Retailer 4
-
£3,027 GBP
View
Retailer 5
-
£3,037 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£3,037 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£3,037 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£3,037 GBP
View
Price last confirmed 15 days ago
Retailer 9
-
£3,037 GBP
View
Price last confirmed 38 days ago
B+
Retailer 10
-
£3,037 GBP
View
B+
Retailer 11
-
£3,214 GBP
View
Retailer 12
-
£3,214 GBP
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£3,295 GBP
View
B+
Retailer 14
-
£3,295 GBP
View
B+
Retailer 15
-
£3,374 GBP
View
B+
Retailer 16
-
£3,399 GBP
View
Retailer 17
-
£3,504 GBP
View
Price last confirmed 28 days ago
Retailer 18
-
£3,504 GBP
View
Price last confirmed 16 days ago
Retailer 19
-
£3,504 GBP
View
Price last confirmed 14 days ago
Retailer 20
-
£3,575 GBP
View
Price last confirmed 28 days ago
B
Retailer 21
-
£3,748 GBP
View
B+
Retailer 22
-
£3,769 GBP
View
Retailer 23
-
£3,792 GBP
View
Price last confirmed 22 days ago
B+
Retailer 24
-
£4,090 GBP
View
Retailer 25
-
£5,346 GBP
View
Price last confirmed 12 days ago
Retailer 26
-
£5,840 GBP
View
Price last confirmed 14 days ago
Retailer 27
-
£5,840 GBP
View
Price last confirmed 48 days ago
Retailer 28
-
£5,840 GBP
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
d36fb97f-aa5b-4f4b-be20-5658110b2480 · Oct 20
£5,840 GBP
$7,817 USD
View
Price last confirmed 17 days ago
28 more retailers have this diamond
Prices start from £2,672 GBPSave up to £1,418 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
£2,672 GBP