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1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • IGI 826681826

Shape and cutting style on the report: Round brilliant

Certificate IGI 826681826

Diamond specifications and retailer prices

From $2,897 SGD
As of November 6, 2026
Save $3,808 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,705 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 IGI 826681826. Listed at 18 retailers as of November 5, 2026, with prices from $2,897 to $6,705, a $3,808 spread on the same certified stone. NZ Jewellers lists it at $6,705. 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 angle36.4°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 826681826
Dimensions6.42 × 6.46 × 4.09 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.42 mm6.46 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 826681826
Side View
Table 58.0%Crown 36.4°Girdle: MediumPavilion 41.5°CuletDepth 63.5%

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: $6,705 SGD|Low: $2,897 SGD|High: $6,705 SGD|Avg: $3,885 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
November 6, 2026
Retailer 6$2,897 SGD
Retailer 4$2,899 SGD
Retailer 11$2,960 SGD
Retailer 5$3,202 SGD
Retailer 14$3,207 SGD
Retailer 12$3,355 SGD
Retailer 2$3,433 SGD
Retailer 3$3,700 SGD
Retailer 7$3,739 SGD
Retailer 8$3,795 SGD
Retailer 9$3,914 SGD
Retailer 13$4,519 SGD
Retailer 10$5,604 SGD
NZ Jewellers$6,705 SGD

41 data points across 14 retailers

18 retailers$2,897 SGD to $6,705 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
B+
Retailer 4
-
$3,202 SGD
View
B+
Retailer 5
-
$3,207 SGD
View
Retailer 6
-
$3,207 SGD
View
Price last confirmed 56 days ago
B+
Retailer 7
-
$3,355 SGD
View
B+
Retailer 8
-
$3,386 SGD
View
B+
Retailer 9
-
$3,433 SGD
View
Retailer 10
-
$3,700 SGD
View
Price last confirmed 60 days ago
B+
Retailer 11
-
$3,700 SGD
View
B+
Retailer 12
-
$3,739 SGD
View
B+
Retailer 13
-
$3,795 SGD
View
B+
Retailer 14
-
$3,914 SGD
View
B
Retailer 15
-
$4,519 SGD
View
B
Retailer 16
-
$5,604 SGD
View
Retailer 17
-
$6,705 SGD
View
Price last confirmed 57 days ago
Most Expensive
B
NZ Jewellers
19af69cb-3516-48f6-ab75-96d7b98d24ed · Nov 5
$6,705 SGD
$5,249 USD
View
17 more retailers have this diamond
Prices start from $2,897 SGDSave up to $3,808 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