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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2566167756

Certificate GIA 2566167756

Diamond specifications and retailer prices

From $6,615 NZD
$3,715 USD
As of October 29, 2026
Save $6,031 NZD (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,645 NZD 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 29, 2026, with prices from $6,615 to $12,645, a $6,031 spread on the same certified stone. NZ Jewellers lists it at $12,645. 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 29
Current: $12,645 NZD|Low: $6,543 NZD|High: $12,645 NZD|Avg: $8,329 NZD
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$6,615 NZD
Retailer 5$6,643 NZD
Retailer 4$7,005 NZD
Retailer 7$7,015 NZD
Retailer 8$7,259 NZD
Retailer 10$7,259 NZD
Retailer 9$7,514 NZD
Retailer 11$7,783 NZD
Retailer 2$8,185 NZD
Retailer 6$12,204 NZD
NZ Jewellers$12,645 NZD

38 data points across 11 retailers

11 retailers$6,615 NZD to $12,645 NZD

B+
Cheapest Retailer
-
$6,615 NZD
$3,715 USD
B+
Retailer 2
-
$6,643 NZD
£2,938 GBP
View
B+
Retailer 3
-
$7,005 NZD
£3,098 GBP
View
B+
Retailer 4
-
$7,015 NZD
$3,940 USD
View
B+
Retailer 5
-
$7,259 NZD
$4,077 USD
View
B+
Retailer 6
-
$7,259 NZD
$4,077 USD
View
B+
Retailer 7
-
$7,514 NZD
$4,220 USD
View
Retailer 8
-
$7,783 NZD
A$6,725 AUD
View
Price last confirmed 26 days ago
B+
Retailer 9
-
$8,185 NZD
$4,597 USD
View
B
Retailer 10
-
$12,204 NZD
£5,397 GBP
View
Most Expensive
B
NZ Jewellers
23bae50b-c1d2-4e30-9ff8-e181c07234c8 · Oct 30
$12,645 NZD
$7,102 USD
View
10 more retailers have this diamond
Prices start from $6,615 NZDSave up to $6,031 NZD

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
$6,615 NZD