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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

GD • D/SI2 • GIA 6542551989

Certificate GIA 6542551989

Diamond specifications and retailer prices

From $1,896 SGD
As of November 5, 2026
Save $4,205 SGD (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,100 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 6542551989. Listed at 19 retailers as of November 5, 2026, with prices from $1,896 to $6,100, a $4,205 spread on the same certified stone. NZ Jewellers lists it at $6,100. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle42.4°
OriginNatural
Grading LabGIA
CertificateGIA 6542551989
Dimensions6.30 × 6.24 × 4.07 mm
L/W Ratio1.01
Top View
6.30 mm6.24 mm1.00 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542551989
Side View
Table 59.0%Crown 34.5°Girdle: MED-THKPavilion 42.4°Culet: NDepth 64.9%

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 5
Current: $6,100 SGD|Low: $1,896 SGD|High: $6,187 SGD|Avg: $2,722 SGD|-1.4%
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
Retailer 19
November 6, 2026
Retailer 19$1,896 SGD
Retailer 4$2,065 SGD
Retailer 15$2,092 SGD
Retailer 9$2,136 SGD
Retailer 14$2,143 SGD
Retailer 11$2,179 SGD
Retailer 3$2,266 SGD
Retailer 10$2,298 SGD
Retailer 8$2,312 SGD
Retailer 16$2,337 SGD
Retailer 7$2,371 SGD
Retailer 6$2,516 SGD
Retailer 18$2,516 SGD
Retailer 2$2,593 SGD
Retailer 17$2,615 SGD
Retailer 12$2,684 SGD
Retailer 13$3,178 SGD
Retailer 5$4,432 SGD
NZ Jewellers$6,100 SGD

31 data points across 19 retailers

19 retailers$1,896 SGD to $6,100 SGD

A
Cheapest Retailer
-
$1,896 SGD
A
Retailer 2
-
$2,065 SGD
View
A
Retailer 3
-
$2,092 SGD
View
Final sale: no returns
A
Retailer 4
-
$2,136 SGD
View
A
Retailer 5
-
$2,143 SGD
View
A
Retailer 6
-
$2,179 SGD
View
A
Retailer 7
-
$2,266 SGD
View
Retailer 8
-
$2,298 SGD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$2,312 SGD
View
A
Retailer 10
-
$2,337 SGD
View
A
Retailer 11
-
$2,371 SGD
View
A
Retailer 12
-
$2,516 SGD
View
A
Retailer 13
-
$2,516 SGD
View
A
Retailer 14
-
$2,593 SGD
View
A
Retailer 15
-
$2,615 SGD
View
A
Retailer 16
-
$2,684 SGD
View
B+
Retailer 17
-
$3,178 SGD
View
B+
Retailer 18
-
$4,432 SGD
View
Most Expensive
B
NZ Jewellers
ec507c66-be37-4794-813a-ae2f4fb2529f · Nov 5
$6,100 SGD
$4,776 USD
View
18 more retailers have this diamond
Prices start from $1,896 SGDSave up to $4,205 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
$1,896 SGD