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Round|Natural|GIA

1.01ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2556587039

Certificate GIA 2556587039

Diamond specifications and retailer prices

From £1,261 GBP
HK$13,200 HKD
As of November 1, 2026
Save £1,651 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,856 GBP at NZ Jewellers · As of September 21, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556587039. Listed at 16 retailers as of November 1, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556587039
Dimensions6.35 × 6.38 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.35 mm6.38 mm1.01 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556587039
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.1%

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: Nov 1
Current: £1,511 GBP|Low: £1,251 GBP|High: £3,231 GBP|Avg: £1,798 GBP|-5.5%
Retailer 1
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
November 2, 2026
Retailer 10£1,261 GBP
Retailer 5£1,349 GBP
Retailer 3£1,360 GBP
Retailer 12£1,390 GBP
Retailer 14£1,410 GBP
Retailer 1£1,511 GBP
Retailer 2£1,746 GBP
Retailer 13£1,746 GBP
Retailer 7£1,798 GBP
Retailer 4£1,806 GBP
Retailer 6£1,808 GBP
Retailer 11£2,030 GBP
Retailer 8£2,117 GBP
Retailer 9£2,912 GBP

28 data points across 14 retailers

16 retailers£1,261 GBP to £2,912 GBP

A
Cheapest Retailer
-
£1,261 GBP
HK$13,200 HKD
A
Retailer 2
-
£1,360 GBP
$1,822 USD
View
A
Retailer 3
-
£1,390 GBP
$1,862 USD
View
Final sale: no returns
A
Retailer 4
-
£1,410 GBP
$1,889 USD
View
A
Retailer 5
-
£1,511 GBP
View
A
Retailer 6
-
£1,736 GBP
A$3,578 AUD
View
A
Retailer 7
-
£1,746 GBP
$2,340 USD
View
A
Retailer 8
-
£1,746 GBP
$2,340 USD
View
A
Retailer 9
-
£1,798 GBP
View
A
Retailer 10
-
£1,806 GBP
$2,420 USD
View
Retailer 11
-
£1,808 GBP
$2,422 USD
View
Price last confirmed 39 days ago
A
Retailer 12
-
£2,030 GBP
$2,720 USD
View
Retailer 13
-
£2,086 GBP
$2,795 USD
View
Price last confirmed 41 days ago
B+
Retailer 14
-
£2,117 GBP
€2,702 EUR
View
B+
Retailer 15
-
£2,912 GBP
View
Most Expensive
NZ Jewellers
31f749c3-f8ca-4e0a-9770-b7dbc8aff630 · Sep 21
£3,856 GBP
$5,167 USD
View
Price last confirmed 41 days ago
15 more retailers have this diamond
Prices start from £1,261 GBPSave up to £1,651 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
£1,261 GBP