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Round|Natural|GIA

1.11ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551090389

Certificate GIA 6551090389

Diamond specifications and retailer prices

From $3,121 AUD
$2,187 USD
As of November 1, 2026
Save $3,090 AUD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,533 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.11ct natural round diamond

This 1.11ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551090389. Listed at 13 retailers as of October 26, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.11
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551090389
Dimensions6.63 × 6.59 × 4.11 mm
L/W Ratio1.01
Star length50%
Top View
6.63 mm6.59 mm1.11 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551090389
Side View
Table 59.0%Crown 34.5°GirdlePavilion 41.6°Culet: NoneDepth 62.2%

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 1
Current: $4,029 AUD|Low: $3,048 AUD|High: $6,390 AUD|Avg: $4,094 AUD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10$3,121 AUD
Retailer 8$3,158 AUD
Retailer 5$3,467 AUD
Retailer 3$3,603 AUD
Retailer 13$3,795 AUD
Retailer 4$3,853 AUD
Retailer 7$3,923 AUD
Retailer 9$3,998 AUD
Retailer 1$4,029 AUD
Retailer 12$4,032 AUD
Retailer 2$4,345 AUD
Retailer 6$5,995 AUD
Retailer 11$6,211 AUD

33 data points across 13 retailers

13 retailers$3,121 AUD to $6,211 AUD

A
Cheapest Retailer
-
$3,121 AUD
$2,187 USD
A
Retailer 2
-
$3,158 AUD
$2,213 USD
View
Final sale: no returns
Retailer 3
-
$3,603 AUD
$2,525 USD
View
Price last confirmed 32 days ago
Retailer 4
-
$3,770 AUD
$2,642 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
$3,923 AUD
£2,165 GBP
View
B+
Retailer 6
-
$3,998 AUD
$2,802 USD
View
B+
Retailer 7
-
$4,029 AUD
€2,689 EUR
View
Retailer 8
-
$4,032 AUD
View
Price last confirmed 26 days ago
Retailer 9
-
$4,158 AUD
$2,914 USD
View
Price last confirmed 34 days ago
Retailer 10
-
$4,345 AUD
ZAR 49,189 ZAR
View
Price last confirmed 33 days ago
B
Retailer 11
-
$5,995 AUD
£3,308 GBP
View
B
Retailer 12
-
$6,211 AUD
$4,353 USD
View
Most Expensive
NZ Jewellers
1166df7e-5052-447d-9f7d-2b3dbc4e60db · Sep 28
$7,533 AUD
$5,279 USD
View
Price last confirmed 35 days ago
12 more retailers have this diamond
Prices start from $3,121 AUDSave up to $3,090 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
1.11ct Round
$3,121 AUD