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Round|Natural|GIA

1.31ct H I1 Round Natural Diamond

VG • H/I1 • GIA 5231974938

Certificate GIA 5231974938

Diamond specifications and retailer prices

From £1,813 GBP
$2,429 USD
As of November 2, 2026
Save £2,192 GBP (55%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,005 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 H colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by GIA 5231974938. Listed at 8 retailers as of October 30, 2026, with prices from £1,813 to £4,005, a £2,192 spread on the same certified stone. NZ Jewellers lists it at £4,005. 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
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 5231974938
Dimensions6.84 × 6.92 × 4.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.84 mm6.92 mm1.31 ctH / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231974938
Side View
Table 58.0%Crown 36°Girdle: MED-THKPavilion 40.4°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: £4,005 GBP|Low: £1,789 GBP|High: £4,005 GBP|Avg: £2,392 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4£1,813 GBP
Retailer 5£1,865 GBP
Retailer 7£2,082 GBP
Retailer 8£2,082 GBP
Retailer 3£2,162 GBP
Retailer 6£2,402 GBP
Retailer 2£2,679 GBP
NZ Jewellers£4,005 GBP

21 data points across 8 retailers

8 retailers£1,813 GBP to £4,005 GBP

B+
Cheapest Retailer
-
£1,813 GBP
$2,429 USD
B+
Retailer 2
-
£1,865 GBP
$2,499 USD
View
B+
Retailer 3
-
£2,082 GBP
$2,790 USD
View
B+
Retailer 4
-
£2,082 GBP
$2,790 USD
View
B+
Retailer 5
-
£2,162 GBP
$2,897 USD
View
B
Retailer 6
-
£2,402 GBP
$3,219 USD
View
B
Retailer 7
-
£2,679 GBP
€3,419 EUR
View
Most Expensive
C
NZ Jewellers
378b1a03-2e96-425e-aed3-bb7077afeca1 · Oct 30
£4,005 GBP
$5,366 USD
View
7 more retailers have this diamond
Prices start from £1,813 GBPSave up to £2,192 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
£1,813 GBP