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Round|Natural|GIA

1.31ct G I1 Round Natural Diamond

VG • G/I1 • GIA 6435442062

Certificate GIA 6435442062

Diamond specifications and retailer prices

From £1,786 GBP
HK$18,700 HKD
As of November 1, 2026
Save £2,388 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,174 GBP at NZ Jewellers · As of October 30, 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 G colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by GIA 6435442062. Listed at 11 retailers as of October 30, 2026, with prices from £1,786 to £4,174, a £2,388 spread on the same certified stone. NZ Jewellers lists it at £4,174. 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
G
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6435442062
Dimensions6.89 × 6.80 × 4.41 mm
L/W Ratio1.01
Top View
6.89 mm6.80 mm1.31 ctG / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6435442062
Side View
Table 57.0%Crown 37.5°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 64.5%

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 1
Current: £4,174 GBP|Low: £1,656 GBP|High: £4,483 GBP|Avg: £2,559 GBP|-6.9%
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
November 1, 2026
Retailer 6£1,656 GBP
Retailer 9£1,786 GBP
Retailer 14£1,944 GBP
Retailer 8£2,136 GBP
Retailer 12£2,171 GBP
Retailer 13£2,171 GBP
Retailer 7£2,243 GBP
Retailer 10£2,254 GBP
Retailer 11£2,470 GBP
Retailer 15£2,470 GBP
Retailer 3£2,505 GBP
Retailer 16£2,552 GBP
Retailer 2£2,793 GBP
Retailer 4£3,062 GBP
Retailer 5£3,662 GBP
NZ Jewellers£4,174 GBP

23 data points across 16 retailers

11 retailers£1,786 GBP to £4,174 GBP

A
Cheapest Retailer
-
£1,786 GBP
HK$18,700 HKD
B+
Retailer 2
-
£1,944 GBP
$2,605 USD
View
B+
Retailer 3
-
£2,171 GBP
$2,909 USD
View
B+
Retailer 4
-
£2,171 GBP
$2,909 USD
View
B+
Retailer 5
-
£2,254 GBP
$3,020 USD
View
B+
Retailer 6
-
£2,470 GBP
$3,310 USD
View
B+
Retailer 7
-
£2,470 GBP
$3,310 USD
View
B
Retailer 8
-
£2,505 GBP
$3,356 USD
View
B
Retailer 9
-
£2,552 GBP
$3,420 USD
View
B
Retailer 10
-
£2,793 GBP
€3,564 EUR
View
Most Expensive
C
NZ Jewellers
c9bac377-742e-48af-a0ff-f6f58bf42be9 · Oct 30
£4,174 GBP
$5,593 USD
View
10 more retailers have this diamond
Prices start from £1,786 GBPSave up to £2,388 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
1.31ct Round
£1,786 GBP