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Round|Natural|GIA

1.01ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1423732075

Certificate GIA 1423732075

Diamond specifications and retailer prices

From £959 GBP
As of November 4, 2026
Save £1,762 GBP (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,721 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1423732075. Listed at 12 retailers as of November 4, 2026, with prices from £959 to £2,721, a £1,762 spread on the same certified stone. Helzberg Diamonds lists it at £2,721. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1423732075
Dimensions6.45 × 6.42 × 3.97 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
6.45 mm6.42 mm1.01 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423732075
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,721 GBP|Low: £959 GBP|High: £2,774 GBP|Avg: £1,594 GBP|-1.9%
Helzberg Diamonds
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
Retailer 15
Retailer 16
November 4, 2026
Retailer 2£959 GBP
Retailer 16£962 GBP
Retailer 15£967 GBP
Retailer 14£1,143 GBP
Retailer 9£1,143 GBP
Retailer 5£1,213 GBP
Retailer 3£1,264 GBP
Retailer 11£1,372 GBP
Retailer 10£1,447 GBP
Retailer 4£1,516 GBP
Retailer 12£1,549 GBP
Retailer 8£1,763 GBP
Retailer 13£1,909 GBP
Retailer 6£1,953 GBP
Retailer 7£2,525 GBP
Helzberg Diamonds£2,721 GBP

31 data points across 16 retailers

12 retailers£959 GBP to £2,721 GBP

A
Cheapest Retailer
-
£959 GBP
A
Retailer 2
-
£962 GBP
View
Final sale: no returns
A
Retailer 3
-
£967 GBP
View
A
Retailer 4
-
£1,143 GBP
View
A
Retailer 5
-
£1,143 GBP
View
Retailer 6
-
£1,213 GBP
View
Price last confirmed 27 days ago
Retailer 7
-
£1,264 GBP
View
Price last confirmed 27 days ago
A
Retailer 8
-
£1,372 GBP
View
A
Retailer 9
-
£1,447 GBP
View
A
Retailer 10
-
£1,549 GBP
View
A
Retailer 11
-
£1,909 GBP
View
Most Expensive
B+
Helzberg Diamonds
XZRLIKIGNHGLI · Nov 6
£2,721 GBP
$3,662 USD
View
11 more retailers have this diamond
Prices start from £959 GBPSave up to £1,762 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
£959 GBP