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Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6505241872

Certificate GIA 6505241872

Diamond specifications and retailer prices

From $2,286 SGD
As of November 6, 2026
Save $4,058 SGD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,344 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505241872. Listed at 13 retailers as of November 5, 2026, with prices from $2,286 to $6,344, a $4,058 spread on the same certified stone. NZ Jewellers lists it at $6,344. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505241872
Dimensions6.45 × 6.51 × 4.06 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.45 mm6.51 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505241872
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.6%

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: $6,344 SGD|Low: $2,286 SGD|High: $6,633 SGD|Avg: $3,714 SGD|-4.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$2,286 SGD
Retailer 11$2,429 SGD
Retailer 9$2,741 SGD
Retailer 3$2,868 SGD
Retailer 4$2,903 SGD
Retailer 7$3,191 SGD
Retailer 5$3,212 SGD
Retailer 6$3,576 SGD
Retailer 8$3,704 SGD
Retailer 10$5,302 SGD
NZ Jewellers$6,344 SGD

27 data points across 11 retailers

13 retailers$2,286 SGD to $6,344 SGD

A
Cheapest Retailer
-
$2,286 SGD
A
Retailer 2
-
$2,429 SGD
View
Final sale: no returns
A
Retailer 3
-
$2,741 SGD
View
A
Retailer 4
-
$2,868 SGD
View
A
Retailer 5
-
$2,903 SGD
View
A
Retailer 6
-
$2,960 SGD
View
A
Retailer 7
-
$3,191 SGD
View
A
Retailer 8
-
$3,212 SGD
View
B+
Retailer 9
-
$3,576 SGD
View
B+
Retailer 10
-
$3,704 SGD
View
Retailer 11
-
$3,863 SGD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$5,302 SGD
View
Most Expensive
B
NZ Jewellers
bd109b5e-5f66-43ef-8a97-8f8c565ab457 · Nov 5
$6,344 SGD
$4,967 USD
View
12 more retailers have this diamond
Prices start from $2,286 SGDSave up to $4,058 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
$2,286 SGD