CaratHunter
Plans
Round|Natural|GIA

1.30ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 572

Certificate GIA 572

Diamond specifications and retailer prices

From £1,404 GBP
As of November 3, 2026
Save £2,019 GBP (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,463 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 7 retailers as of November 2, 2026, with a 144% 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 572
Dimensions6.93 × 6.97 × 4.36 mm
L/W Ratio1.01
Top View
6.93 mm6.97 mm1.30 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 572
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: 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 3
Current: £3,422 GBP|Low: £1,396 GBP|High: £3,505 GBP|Avg: £2,097 GBP|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 23, 2026
Retailer 5£1,396 GBP
Retailer 3£1,404 GBP
Retailer 2£1,468 GBP
Retailer 4£2,201 GBP
NZ Jewellers£3,422 GBP

16 data points across 5 retailers

7 retailers£1,404 GBP to £3,422 GBP

A
Cheapest Retailer
-
£1,404 GBP
Retailer 2
-
£1,420 GBP
View
Price last confirmed 41 days ago
A
Retailer 3
-
£1,468 GBP
View
Retailer 4
-
£1,965 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£2,201 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£3,422 GBP
View
Most Expensive
NZ Jewellers
5f3b2ea0-0c04-4ccd-9aff-90c75cede802 · Sep 26
£3,463 GBP
$4,661 USD
View
Price last confirmed 40 days ago
6 more retailers have this diamond
Prices start from £1,404 GBPSave up to £2,019 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
£1,404 GBP