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Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

GD • D/SI1 • GIA 2556450146

Certificate GIA 2556450146

Diamond specifications and retailer prices

From $2,810 SGD
As of November 6, 2026
Save $4,702 SGD (63%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $7,512 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 2556450146. Listed at 25 retailers as of November 5, 2026, with prices from $2,810 to $7,512, a $4,702 spread on the same certified stone. NZ Jewellers lists it at $7,512. 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

1.01
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556450146
Dimensions6.03 × 6.13 × 4.07 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.03 mm6.13 mm1.01 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556450146
Side View
Table 62.0%Crown 40°Girdle: THK-VTKPavilion 41°Culet: NoneDepth 66.8%

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: $7,512 SGD|Low: $2,795 SGD|High: $7,512 SGD|Avg: $4,060 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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 2$2,810 SGD
Retailer 5$2,811 SGD
Retailer 11$3,175 SGD
Retailer 15$3,219 SGD
Retailer 22$3,219 SGD
Retailer 12$3,316 SGD
Retailer 13$3,438 SGD
Retailer 3$3,518 SGD
Retailer 6$3,525 SGD
Retailer 4$3,562 SGD
Retailer 8$3,593 SGD
Retailer 10$3,593 SGD
Retailer 9$3,731 SGD
Retailer 7$3,773 SGD
Retailer 19$3,781 SGD
Retailer 18$3,917 SGD
Retailer 23$4,115 SGD
Retailer 14$4,146 SGD
Retailer 20$4,201 SGD
Retailer 21$4,385 SGD
Retailer 16$5,301 SGD
Retailer 17$5,449 SGD
Retailer 24$6,277 SGD
NZ Jewellers$7,512 SGD

19 data points across 24 retailers

25 retailers$2,810 SGD to $7,512 SGD

A
Cheapest Retailer
-
$2,810 SGD
A
Retailer 2
-
$2,811 SGD
View
A
Retailer 3
-
$3,175 SGD
View
B+
Retailer 4
-
$3,219 SGD
View
A
Retailer 5
-
$3,219 SGD
View
A
Retailer 6
-
$3,316 SGD
View
Final sale: no returns
A
Retailer 7
-
$3,438 SGD
View
B+
Retailer 8
-
$3,518 SGD
View
B+
Retailer 9
-
$3,525 SGD
View
B+
Retailer 10
-
$3,562 SGD
View
Retailer 11
-
$3,593 SGD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$3,593 SGD
View
B+
Retailer 13
-
$3,731 SGD
View
B+
Retailer 14
-
$3,773 SGD
View
B+
Retailer 15
-
$3,781 SGD
View
B+
Retailer 16
-
$3,917 SGD
View
B+
Retailer 17
-
$4,115 SGD
View
B+
Retailer 18
-
$4,146 SGD
View
B+
Retailer 19
-
$4,201 SGD
View
Retailer 20
-
$4,354 SGD
View
Price last confirmed 33 days ago
B+
Retailer 21
-
$4,385 SGD
View
B
Retailer 22
-
$5,301 SGD
View
B
Retailer 23
-
$5,449 SGD
View
B
Retailer 24
-
$6,277 SGD
View
Most Expensive
C
NZ Jewellers
ffbaecdc-c3de-48b0-9890-1cd15db27370 · Nov 5
$7,512 SGD
$5,881 USD
View
24 more retailers have this diamond
Prices start from $2,810 SGDSave up to $4,702 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
1.01ct Round
$2,810 SGD