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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556452598

Certificate GIA 2556452598

Diamond specifications and retailer prices

From $2,207 SGD
As of November 6, 2026
Save $2,926 SGD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,323 SGD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct 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 2556452598. Listed at 20 retailers as of November 2, 2026, with a 133% 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556452598
Dimensions6.46 × 6.50 × 4.06 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.46 mm6.50 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556452598
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,058 SGD|Low: $2,207 SGD|High: $5,361 SGD|Avg: $3,106 SGD|-1.0%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 16$2,207 SGD
Retailer 5$2,247 SGD
Retailer 4$2,438 SGD
Retailer 11$2,512 SGD
Retailer 15$2,514 SGD
Retailer 2$2,673 SGD
Retailer 13$2,704 SGD
Retailer 6$2,896 SGD
Retailer 8$2,962 SGD
Retailer 1$3,058 SGD
Retailer 9$3,197 SGD
Retailer 10$3,366 SGD
Retailer 7$3,417 SGD
Retailer 14$3,450 SGD
Retailer 12$4,252 SGD
Retailer 3$5,133 SGD

30 data points across 16 retailers

20 retailers$2,207 SGD to $5,133 SGD

A
Cheapest Retailer
-
$2,207 SGD
Retailer 2
-
$2,247 SGD
View
Price last confirmed 17 days ago
Retailer 3
-
$2,438 SGD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$2,512 SGD
View
A
Retailer 5
-
$2,514 SGD
View
A
Retailer 6
-
$2,673 SGD
View
A
Retailer 7
-
$2,704 SGD
View
Final sale: no returns
Retailer 8
-
$2,962 SGD
View
Price last confirmed 17 days ago
A
Retailer 9
-
$2,995 SGD
View
A
Retailer 10
-
$3,058 SGD
View
Retailer 11
-
$3,164 SGD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$3,197 SGD
View
B+
Retailer 13
-
$3,366 SGD
View
Retailer 14
-
$3,417 SGD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$3,450 SGD
View
Retailer 16
-
$3,490 SGD
View
Price last confirmed 48 days ago
B+
Retailer 17
-
$4,252 SGD
View
B
Retailer 18
-
$5,133 SGD
View
Retailer 19
-
$6,323 SGD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
05f53ec0-77c7-4a2a-a7d4-89ef61e356d8 · Sep 19
$6,323 SGD
$4,950 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from $2,207 SGDSave up to $2,926 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
1.05ct Round
$2,207 SGD