Round|Natural|IGI

1.01ct J I1 Round Natural Diamond

GD • J/I1 • IGI 175572036

Shape and cutting style on the report: Round brilliant

Certificate IGI 175572036

Diamond specifications and retailer prices

From £725 GBP
$971 USD
As of October 30, 2026
Save £386 GBP (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,609 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and I1 clarity (included), with a standard cut grade and certified by IGI 175572036. Listed at 9 retailers as of October 30, 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. 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

1.01
Carat
J
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle37.7°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 175572036
Dimensions6.14 × 6.12 × 4.07 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeMedium
Top View
6.14 mm6.12 mm1.01 ctJ / I1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 175572036
Side View
Table 57.0%Crown 37.7°Girdle: Very ThickPavilion 40.7°Culet: MediumDepth 66.3%

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 30
Current: £1,110 GBP|Low: £672 GBP|High: £1,483 GBP|Avg: £993 GBP|-22.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3£672 GBP
Retailer 4£693 GBP
Retailer 2£725 GBP
Retailer 7£905 GBP
Retailer 1£1,110 GBP
Retailer 6£1,185 GBP
Retailer 5£1,273 GBP

19 data points across 7 retailers

9 retailers£725 GBP to £1,110 GBP

Retailer 1
-
£672 GBP
$900 USD
Price last confirmed 10 days ago
B+
Retailer 2
-
£725 GBP
$971 USD
View
Retailer 3
-
£905 GBP
$1,213 USD
View
Price last confirmed 24 days ago
Retailer 4
-
£969 GBP
$1,299 USD
View
Price last confirmed 23 days ago
Retailer 5
-
£969 GBP
$1,299 USD
View
Price last confirmed 23 days ago
Retailer 6
-
£1,007 GBP
$1,349 USD
View
Price last confirmed 32 days ago
B
Retailer 7
-
£1,110 GBP
€1,417 EUR
View
Retailer 8
-
£1,118 GBP
$1,498 USD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
9fdc0cea-fe17-4592-8a3f-f79c2b04a003 · Sep 28
£2,609 GBP
$3,496 USD
View
Price last confirmed 33 days ago
8 more retailers have this diamond
Prices start from £725 GBPSave up to £386 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+
1.01ct Round
£725 GBP