Round|Natural|GIA

1.31ct H I1 Round Natural Diamond

GD • H/I1 • GIA 1355973784

Certificate GIA 1355973784

Diamond specifications and retailer prices

From £1,622 GBP
₹206,966 INR
As of October 31, 2026
9 retailers carry this diamond
Most expensive: £4,509 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and I1 clarity (included), with a standard cut grade and certified by GIA 1355973784. Listed at 9 retailers as of October 31, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
H
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1355973784
Dimensions6.81 × 6.83 × 4.44 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Culet sizeNone
Key to symbols
Crystal, Needle, Indented Natural
Top View
6.81 mm6.83 mm1.31 ctH / I1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1355973784
Side View
Table 54.0%Crown 35.5°Girdle: STK-VTKPavilion 40.8°Culet: NoneDepth 65.1%

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: Oct 31
Current: £4,509 GBP|Low: £1,618 GBP|High: £4,509 GBP|Avg: £2,383 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2£1,622 GBP
Retailer 8£1,993 GBP
Retailer 5£2,156 GBP
Retailer 6£2,157 GBP
Retailer 4£2,240 GBP
Retailer 7£2,488 GBP
Retailer 3£2,508 GBP
NZ Jewellers£4,509 GBP

43 data points across 8 retailers

9 retailers

B+
Cheapest Retailer
-
£1,622 GBP
₹206,966 INR
Retailer 2
-
£1,932 GBP
$2,588 USD
View
Price last confirmed 12 days ago
Retailer 3
-
£1,993 GBP
$2,671 USD
View
Price last confirmed 11 days ago
Retailer 4
-
£2,156 GBP
$2,889 USD
View
Price last confirmed 10 days ago
Retailer 5
-
£2,157 GBP
$2,890 USD
View
Price last confirmed 16 days ago
Retailer 6
-
£2,240 GBP
$3,001 USD
View
Price last confirmed 17 days ago
Retailer 7
-
£2,488 GBP
$3,334 USD
View
Price last confirmed 11 days ago
Retailer 8
-
£2,508 GBP
€3,201 EUR
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
64266e6c-f913-4f0f-be4c-86ad3c6032ed · Oct 20
£4,509 GBP
$6,041 USD
View
Price last confirmed 12 days ago
8 more retailers have this diamond
Prices start from £1,622 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+
1.31ct Round
£1,622 GBP