CaratHunter
Plans
Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2566167756

Certificate GIA 2566167756

Diamond specifications and retailer prices

From $4,749 SGD
$3,715 USD
As of October 30, 2026
Save $4,330 SGD (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,079 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 2566167756. Listed at 11 retailers as of October 30, 2026, with prices from $4,749 to $9,079, a $4,330 spread on the same certified stone. NZ Jewellers lists it at $9,079. 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°
OriginNatural
Grading LabGIA
CertificateGIA 2566167756
Dimensions6.52 × 6.56 × 4.11 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.52 mm6.56 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566167756
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $9,079 SGD|Low: $4,698 SGD|High: $9,079 SGD|Avg: $5,980 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$4,749 SGD
Retailer 5$4,770 SGD
Retailer 4$5,030 SGD
Retailer 7$5,037 SGD
Retailer 8$5,212 SGD
Retailer 10$5,212 SGD
Retailer 9$5,395 SGD
Retailer 11$5,588 SGD
Retailer 2$5,877 SGD
Retailer 6$8,762 SGD
NZ Jewellers$9,079 SGD

38 data points across 11 retailers

11 retailers$4,749 SGD to $9,079 SGD

B+
Cheapest Retailer
-
$4,749 SGD
$3,715 USD
B+
Retailer 2
-
$4,770 SGD
£2,938 GBP
View
B+
Retailer 3
-
$5,030 SGD
£3,098 GBP
View
B+
Retailer 4
-
$5,037 SGD
$3,940 USD
View
B+
Retailer 5
-
$5,212 SGD
$4,077 USD
View
B+
Retailer 6
-
$5,212 SGD
$4,077 USD
View
B+
Retailer 7
-
$5,395 SGD
$4,220 USD
View
Retailer 8
-
$5,588 SGD
A$6,725 AUD
View
Price last confirmed 27 days ago
B+
Retailer 9
-
$5,877 SGD
$4,597 USD
View
B
Retailer 10
-
$8,762 SGD
£5,397 GBP
View
Most Expensive
B
NZ Jewellers
23bae50b-c1d2-4e30-9ff8-e181c07234c8 · Oct 30
$9,079 SGD
$7,102 USD
View
10 more retailers have this diamond
Prices start from $4,749 SGDSave up to $4,330 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.

B+
1.09ct Round
$4,749 SGD