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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1553302112

Certificate GIA 1553302112

Diamond specifications and retailer prices

From $3,745 SGD
A$4,506 AUD
As of October 30, 2026
Save $3,994 SGD (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,738 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct 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 1553302112. Listed at 6 retailers as of October 30, 2026, with prices from $3,745 to $7,738, a $3,994 spread on the same certified stone. NZ Jewellers lists it at $7,738. 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1553302112
Dimensions6.51 × 6.55 × 4.11 mm
L/W Ratio1.01
Star length50%
Key to symbols
Feather, Crystal, Needle, Indented Natural
Top View
6.51 mm6.55 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553302112
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: $7,738 SGD|Low: $3,416 SGD|High: $7,738 SGD|Avg: $5,635 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 4$4,100 SGD
Retailer 5$4,326 SGD
Retailer 2$4,944 SGD
Retailer 3$7,468 SGD
NZ Jewellers$7,738 SGD

27 data points across 5 retailers

6 retailers$3,745 SGD to $7,738 SGD

A
Cheapest Retailer
-
$3,745 SGD
A$4,506 AUD
A
Retailer 2
-
$4,100 SGD
$3,207 USD
View
Final sale: no returns
Retailer 3
-
$4,326 SGD
£2,664 GBP
View
Price last confirmed 31 days ago
B+
Retailer 4
-
$4,944 SGD
€3,683 EUR
View
B
Retailer 5
-
$7,468 SGD
£4,600 GBP
View
Most Expensive
B
NZ Jewellers
bf3de57b-d7c5-42ed-b71a-9e4580671573 · Oct 30
$7,738 SGD
$6,053 USD
View
5 more retailers have this diamond
Prices start from $3,745 SGDSave up to $3,994 SGD

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
1.09ct Round
$3,745 SGD