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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555614721

Certificate GIA 1555614721

Diamond specifications and retailer prices

From $2,897 SGD
As of November 6, 2026
Save $4,502 SGD (61%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,399 SGD at NZ Jewellers · As of November 5, 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 1555614721. Listed at 21 retailers as of November 5, 2026, with prices from $2,897 to $7,399, a $4,502 spread on the same certified stone. NZ Jewellers lists it at $7,399. 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°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555614721
Dimensions6.51 × 6.53 × 4.04 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Cloud
Top View
6.51 mm6.53 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555614721
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: Nov 6
Current: $7,399 SGD|Low: $2,713 SGD|High: $7,399 SGD|Avg: $3,947 SGD
NZ Jewellers
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 7$2,897 SGD
Retailer 5$2,899 SGD
Retailer 6$2,960 SGD
Retailer 14$3,206 SGD
Retailer 16$3,206 SGD
Retailer 15$3,354 SGD
Retailer 9$3,384 SGD
Retailer 4$3,636 SGD
Retailer 3$3,700 SGD
Retailer 2$3,702 SGD
Retailer 8$3,965 SGD
Retailer 13$4,131 SGD
Retailer 10$4,168 SGD
Retailer 11$4,320 SGD
Retailer 12$6,185 SGD
NZ Jewellers$7,399 SGD

31 data points across 16 retailers

21 retailers$2,897 SGD to $7,399 SGD

A
Cheapest Retailer
-
$2,897 SGD
A
Retailer 2
-
$2,899 SGD
View
A
Retailer 3
-
$2,960 SGD
View
Final sale: no returns
A
Retailer 4
-
$3,087 SGD
View
A
Retailer 5
-
$3,206 SGD
View
Retailer 6
-
$3,206 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,261 SGD
View
B+
Retailer 8
-
$3,354 SGD
View
B+
Retailer 9
-
$3,355 SGD
View
B+
Retailer 10
-
$3,384 SGD
View
B+
Retailer 11
-
$3,636 SGD
View
B+
Retailer 12
-
$3,700 SGD
View
B+
Retailer 13
-
$3,702 SGD
View
B+
Retailer 14
-
$3,960 SGD
View
Retailer 15
-
$3,965 SGD
View
Price last confirmed 30 days ago
B+
Retailer 16
-
$4,040 SGD
View
B+
Retailer 17
-
$4,131 SGD
View
B+
Retailer 18
-
$4,168 SGD
View
B
Retailer 19
-
$4,320 SGD
View
B
Retailer 20
-
$6,185 SGD
View
Most Expensive
B
NZ Jewellers
e8e9a1de-dcce-42c5-84ec-6cec898aa17c · Nov 5
$7,399 SGD
$5,793 USD
View
20 more retailers have this diamond
Prices start from $2,897 SGDSave up to $4,502 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
$2,897 SGD