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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 5553042899

Certificate GIA 5553042899

Diamond specifications and retailer prices

From $2,122 SGD
As of November 5, 2026
Save $2,915 SGD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,180 SGD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553042899. Listed at 19 retailers as of November 2, 2026, with a 137% 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

1.00
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5553042899
Dimensions6.33 × 6.36 × 4.00 mm
L/W Ratio1.00
Top View
6.33 mm6.36 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553042899
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.0%

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 5
Current: $6,180 SGD|Low: $2,122 SGD|High: $6,180 SGD|Avg: $3,162 SGD|+0.8%
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
Retailer 17
Retailer 18
November 6, 2026
Retailer 15$2,122 SGD
Retailer 17$2,191 SGD
Retailer 5$2,353 SGD
Retailer 3$2,404 SGD
Retailer 18$2,437 SGD
Retailer 14$2,670 SGD
Retailer 2$2,675 SGD
Retailer 10$2,677 SGD
Retailer 8$2,801 SGD
Retailer 4$3,027 SGD
Retailer 6$3,027 SGD
Retailer 9$3,090 SGD
Retailer 11$3,105 SGD
Retailer 7$3,129 SGD
Retailer 16$3,509 SGD
Retailer 12$3,659 SGD
Retailer 13$5,036 SGD
NZ Jewellers$6,180 SGD

26 data points across 18 retailers

19 retailers$2,122 SGD to $5,036 SGD

A
Cheapest Retailer
-
$2,122 SGD
A
Retailer 2
-
$2,191 SGD
View
A
Retailer 3
-
$2,353 SGD
View
A
Retailer 4
-
$2,404 SGD
View
Final sale: no returns
A
Retailer 5
-
$2,437 SGD
View
Retailer 6
-
$2,657 SGD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$2,670 SGD
View
A
Retailer 8
-
$2,675 SGD
View
Retailer 9
-
$2,677 SGD
View
Price last confirmed 15 days ago
Retailer 10
-
$2,801 SGD
View
Price last confirmed 15 days ago
A
Retailer 11
-
$3,027 SGD
View
A
Retailer 12
-
$3,027 SGD
View
Retailer 13
-
$3,090 SGD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$3,105 SGD
View
B+
Retailer 15
-
$3,129 SGD
View
B+
Retailer 16
-
$3,509 SGD
View
B+
Retailer 17
-
$3,659 SGD
View
B
Retailer 18
-
$5,036 SGD
View
Most Expensive
NZ Jewellers
83c0332c-7649-483a-b899-540f4f630fff · Oct 20
$6,180 SGD
$4,838 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $2,122 SGDSave up to $2,915 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
1.00ct Round
$2,122 SGD