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Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 5436735609

Certificate GIA 5436735609

Diamond specifications and retailer prices

From $2,731 AUD
As of November 5, 2026
Save $3,566 AUD (57%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,297 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5436735609. Listed at 9 retailers as of November 4, 2026, with prices from $2,731 to $6,297, a $3,566 spread on the same certified stone. MOH London lists it at $6,297. 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

1.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5436735609
Dimensions6.32 × 6.36 × 4.00 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.32 mm6.36 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5436735609
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°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 5
Current: $6,297 AUD|Low: $2,731 AUD|High: $6,905 AUD|Avg: $3,901 AUD|-8.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$2,731 AUD
Retailer 9$2,891 AUD
Retailer 8$3,086 AUD
Retailer 7$3,257 AUD
Retailer 4$3,446 AUD
Retailer 3$3,790 AUD
Retailer 2$4,256 AUD
Retailer 5$4,398 AUD
MOH London$6,297 AUD

14 data points across 9 retailers

9 retailers$2,731 AUD to $6,297 AUD

A
Cheapest Retailer
-
$2,731 AUD
A
Retailer 2
-
$2,891 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,086 AUD
View
A
Retailer 4
-
$3,257 AUD
View
A
Retailer 5
-
$3,446 AUD
View
A
Retailer 6
-
$3,790 AUD
View
A
Retailer 7
-
$4,256 AUD
View
A
Retailer 8
-
$4,398 AUD
View
Most Expensive
B+
MOH London
E320763C6 · Nov 4
$6,297 AUD
£3,471 GBP
View
8 more retailers have this diamond
Prices start from $2,731 AUDSave up to $3,566 AUD

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
1.00ct Round
$2,731 AUD