Round|Natural|GIA

1.01ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1423727517

Certificate GIA 1423727517

Diamond specifications and retailer prices

From £706 GBP
₹90,071 INR
As of October 30, 2026
Save £1,450 GBP (67%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,346 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1423727517. Listed at 19 retailers as of October 30, 2026, with a 205% 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1423727517
Dimensions6.40 × 6.37 × 3.98 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.01 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1423727517
Side View
Table 55.0%Crown 37.5°Girdle: ThickPavilion 39.8°Culet: NoneDepth 62.3%

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: Oct 30
Current: £2,155 GBP|Low: £706 GBP|High: £2,155 GBP|Avg: £1,077 GBP
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
October 31, 2026
Retailer 7£706 GBP
Retailer 3£846 GBP
Retailer 4£851 GBP
Retailer 8£853 GBP
Retailer 11£884 GBP
Retailer 14£884 GBP
Retailer 6£887 GBP
Retailer 13£959 GBP
Retailer 9£1,003 GBP
Retailer 2£1,019 GBP
Retailer 5£1,143 GBP
Retailer 10£1,219 GBP
Retailer 12£1,627 GBP
NZ Jewellers£2,155 GBP

28 data points across 14 retailers

19 retailers£706 GBP to £2,155 GBP

A
Cheapest Retailer
-
£706 GBP
₹90,071 INR
A
Retailer 2
-
£846 GBP
$1,134 USD
View
A
Retailer 3
-
£851 GBP
$1,140 USD
View
A
Retailer 4
-
£853 GBP
View
A
Retailer 5
-
£884 GBP
$1,184 USD
View
A
Retailer 6
-
£884 GBP
$1,184 USD
View
B+
Retailer 7
-
£887 GBP
$1,189 USD
View
Final sale: no returns
B+
Retailer 8
-
£959 GBP
$1,285 USD
View
Retailer 9
-
£961 GBP
$1,288 USD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
£993 GBP
SGD 1,798 SGD
View
Retailer 11
-
£999 GBP
$1,338 USD
View
Price last confirmed 31 days ago
A
Retailer 12
-
£1,003 GBP
View
A
Retailer 13
-
£1,019 GBP
$1,366 USD
View
Retailer 14
-
£1,110 GBP
$1,487 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£1,143 GBP
$1,532 USD
View
A
Retailer 16
-
£1,219 GBP
€1,555 EUR
View
B+
Retailer 17
-
£1,627 GBP
View
B
Retailer 18
-
£2,155 GBP
$2,888 USD
View
Most Expensive
NZ Jewellers
a99855aa-cdd5-4671-9f23-7c42e2ba2d46 · Sep 28
£2,346 GBP
$3,143 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from £706 GBPSave up to £1,450 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
1.01ct Round
£706 GBP