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Round|Natural|GIA

1.01ct J I1 Round Natural Diamond

EX • J/I1 • GIA 1428596008

Certificate GIA 1428596008

Diamond specifications and retailer prices

From £1,414 GBP
HK$14,800 HKD
As of November 1, 2026
Save £2,531 GBP (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,944 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 I1 clarity (included), with a top-tier cut grade and certified by GIA 1428596008. Listed at 12 retailers as of October 30, 2026, with prices from £1,414 to £3,944, a £2,531 spread on the same certified stone. NZ Jewellers lists it at £3,944. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
J
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1428596008
Dimensions6.44 × 6.40 × 4.03 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.44 mm6.40 mm1.01 ctJ / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1428596008
Side View
Table 58.0%Crown 34°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,944 GBP|Low: £1,404 GBP|High: £3,944 GBP|Avg: £2,048 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
November 1, 2026
Retailer 5£1,414 GBP
Retailer 6£1,515 GBP
Retailer 8£1,539 GBP
Retailer 3£1,543 GBP
Retailer 9£1,709 GBP
Retailer 11£1,709 GBP
Retailer 7£1,788 GBP
Retailer 10£1,972 GBP
Retailer 12£2,245 GBP
Retailer 2£2,345 GBP
Retailer 4£2,694 GBP
NZ Jewellers£3,944 GBP

21 data points across 12 retailers

12 retailers£1,414 GBP to £3,944 GBP

B
Cheapest Retailer
-
£1,414 GBP
HK$14,800 HKD
Retailer 2
-
£1,515 GBP
$2,030 USD
View
Price last confirmed 14 days ago
B
Retailer 3
-
£1,539 GBP
$2,062 USD
View
B
Retailer 4
-
£1,709 GBP
$2,290 USD
View
B
Retailer 5
-
£1,709 GBP
$2,290 USD
View
B
Retailer 6
-
£1,788 GBP
$2,396 USD
View
B
Retailer 7
-
£1,970 GBP
$2,640 USD
View
B
Retailer 8
-
£1,970 GBP
$2,640 USD
View
B
Retailer 9
-
£1,972 GBP
$2,642 USD
View
B
Retailer 10
-
£2,037 GBP
$2,730 USD
View
B
Retailer 11
-
£2,345 GBP
€2,993 EUR
View
Most Expensive
C
NZ Jewellers
d52a9336-0c1b-4430-8172-acecc6e6331a · Oct 30
£3,944 GBP
$5,285 USD
View
11 more retailers have this diamond
Prices start from £1,414 GBPSave up to £2,531 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
£1,414 GBP