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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 $2,796 SGD
$2,187 USD
As of November 1, 2026
Save $2,769 SGD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,749 SGD 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: $3,609 SGD|Low: $2,731 SGD|High: $5,725 SGD|Avg: $3,668 SGD|+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$2,796 SGD
Retailer 8$2,829 SGD
Retailer 5$3,107 SGD
Retailer 3$3,228 SGD
Retailer 13$3,400 SGD
Retailer 4$3,452 SGD
Retailer 7$3,515 SGD
Retailer 9$3,582 SGD
Retailer 1$3,609 SGD
Retailer 12$3,613 SGD
Retailer 2$3,892 SGD
Retailer 6$5,371 SGD
Retailer 11$5,565 SGD

33 data points across 13 retailers

13 retailers$2,796 SGD to $5,565 SGD

A
Cheapest Retailer
-
$2,796 SGD
$2,187 USD
A
Retailer 2
-
$2,829 SGD
$2,213 USD
View
Final sale: no returns
Retailer 3
-
$3,228 SGD
$2,525 USD
View
Price last confirmed 31 days ago
Retailer 4
-
$3,378 SGD
$2,642 USD
View
Price last confirmed 33 days ago
B+
Retailer 5
-
$3,515 SGD
£2,165 GBP
View
B+
Retailer 6
-
$3,582 SGD
$2,802 USD
View
B+
Retailer 7
-
$3,609 SGD
€2,689 EUR
View
Retailer 8
-
$3,613 SGD
A$4,348 AUD
View
Price last confirmed 26 days ago
Retailer 9
-
$3,725 SGD
$2,914 USD
View
Price last confirmed 33 days ago
Retailer 10
-
$3,892 SGD
ZAR 49,189 ZAR
View
Price last confirmed 33 days ago
B
Retailer 11
-
$5,371 SGD
£3,308 GBP
View
B
Retailer 12
-
$5,565 SGD
$4,353 USD
View
Most Expensive
NZ Jewellers
1166df7e-5052-447d-9f7d-2b3dbc4e60db · Sep 28
$6,749 SGD
$5,279 USD
View
Price last confirmed 35 days ago
12 more retailers have this diamond
Prices start from $2,796 SGDSave up to $2,769 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
1.11ct Round
$2,796 SGD