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Round|Natural|GIA

1.01ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1425873376

Certificate GIA 1425873376

Diamond specifications and retailer prices

From £1,214 GBP
$1,626 USD
As of October 30, 2026
Save £2,452 GBP (67%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,665 GBP at NZ Jewellers · As of October 30, 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 1425873376. Listed at 16 retailers as of October 30, 2026, with prices from £1,214 to £3,665, a £2,452 spread on the same certified stone. NZ Jewellers lists it at £3,665. 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
FluorescenceNone
Crown angle37°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1425873376
Dimensions6.32 × 6.26 × 3.94 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.32 mm6.26 mm1.01 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1425873376
Side View
Table 61.0%Crown 37°Girdle: ThickPavilion 40.6°Culet: NoneDepth 62.7%

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: £1,279 GBP|Low: £1,078 GBP|High: £2,664 GBP|Avg: £1,613 GBP|-24.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 9£1,214 GBP
Retailer 6£1,257 GBP
Retailer 7£1,272 GBP
Retailer 1£1,279 GBP
Retailer 8£1,424 GBP
Retailer 3£1,639 GBP
Retailer 5£1,754 GBP
Retailer 2£1,925 GBP
Retailer 4£2,646 GBP

45 data points across 9 retailers

16 retailers£1,214 GBP to £3,665 GBP

A
Cheapest Retailer
-
£1,214 GBP
$1,626 USD
A
Retailer 2
-
£1,225 GBP
$1,642 USD
View
B+
Retailer 3
-
£1,240 GBP
$1,661 USD
View
B+
Retailer 4
-
£1,257 GBP
$1,684 USD
View
Final sale: no returns
Retailer 5
-
£1,272 GBP
$1,705 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
£1,325 GBP
$1,775 USD
View
B+
Retailer 7
-
£1,361 GBP
$1,824 USD
View
B+
Retailer 8
-
£1,361 GBP
$1,824 USD
View
B+
Retailer 9
-
£1,424 GBP
$1,908 USD
View
B
Retailer 10
-
£1,571 GBP
$2,105 USD
View
B
Retailer 11
-
£1,639 GBP
View
B
Retailer 12
-
£1,729 GBP
CA$3,217 CAD
View
B
Retailer 13
-
£1,754 GBP
View
B
Retailer 14
-
£1,925 GBP
€2,457 EUR
View
B
Retailer 15
-
£2,646 GBP
View
Most Expensive
C
NZ Jewellers
1ac1045a-6a60-41fe-90ff-810dadb5b429 · Oct 30
£3,665 GBP
$4,911 USD
View
15 more retailers have this diamond
Prices start from £1,214 GBPSave up to £2,452 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
£1,214 GBP