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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 $5,197 NZD
A$4,506 AUD
As of October 30, 2026
Save $5,543 NZD (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $10,740 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 1553302112. Listed at 6 retailers as of October 30, 2026, with prices from $5,197 to $10,740, a $5,543 spread on the same certified stone. NZ Jewellers lists it at $10,740. 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: $10,365 NZD|Low: $4,741 NZD|High: $10,433 NZD|Avg: $7,051 NZD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 3$5,690 NZD
Retailer 4$6,003 NZD
Retailer 2$6,850 NZD
Retailer 1$10,365 NZD

23 data points across 4 retailers

6 retailers$5,197 NZD to $10,740 NZD

A
Cheapest Retailer
-
$5,197 NZD
A$4,506 AUD
A
Retailer 2
-
$5,690 NZD
$3,207 USD
View
Final sale: no returns
Retailer 3
-
$6,003 NZD
£2,664 GBP
View
Price last confirmed 30 days ago
B+
Retailer 4
-
$6,850 NZD
€3,677 EUR
View
B
Retailer 5
-
$10,365 NZD
£4,600 GBP
View
Most Expensive
B
NZ Jewellers
bf3de57b-d7c5-42ed-b71a-9e4580671573 · Oct 30
$10,740 NZD
$6,053 USD
View
5 more retailers have this diamond
Prices start from $5,197 NZDSave up to $5,543 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.

A
1.09ct Round
$5,197 NZD