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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

GD • J/SI1 • GIA 1437705735

Certificate GIA 1437705735

Diamond specifications and retailer prices

From $1,847 SGD
As of November 6, 2026
Save $3,546 SGD (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,393 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1437705735. Listed at 21 retailers as of November 5, 2026, with prices from $1,847 to $5,393, a $3,546 spread on the same certified stone. NZ Jewellers lists it at $5,393. 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
J
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1437705735
Dimensions6.23 × 6.16 × 4.07 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
6.23 mm6.16 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1437705735
Side View
Table 56.0%Crown 37.5°Girdle: ThickPavilion 41°Culet: NoneDepth 65.7%

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: $1,847 SGD|Low: $1,847 SGD|High: $4,573 SGD|Avg: $2,840 SGD|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1$1,847 SGD
Retailer 9$1,880 SGD
Retailer 2$2,381 SGD
Retailer 11$2,395 SGD
Retailer 8$2,459 SGD
Retailer 4$2,608 SGD
Retailer 6$2,785 SGD
Retailer 5$3,147 SGD
Retailer 7$3,152 SGD
Retailer 3$3,179 SGD
Retailer 10$4,543 SGD

38 data points across 11 retailers

21 retailers$1,847 SGD to $5,393 SGD

A
Cheapest Retailer
-
$1,847 SGD
B+
Retailer 2
-
$1,880 SGD
View
B+
Retailer 3
-
$2,281 SGD
View
B+
Retailer 4
-
$2,381 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,395 SGD
View
B+
Retailer 6
-
$2,459 SGD
View
B+
Retailer 7
-
$2,514 SGD
View
Retailer 8
-
$2,579 SGD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$2,579 SGD
View
B
Retailer 10
-
$2,608 SGD
View
B
Retailer 11
-
$2,625 SGD
View
B
Retailer 12
-
$2,698 SGD
View
B
Retailer 13
-
$2,755 SGD
View
B
Retailer 14
-
$2,785 SGD
View
B
Retailer 15
-
$2,976 SGD
View
B
Retailer 16
-
$3,147 SGD
View
B
Retailer 17
-
$3,152 SGD
View
Retailer 18
-
$3,179 SGD
View
Price last confirmed 32 days ago
C
Retailer 19
-
$4,449 SGD
View
Retailer 20
-
$4,543 SGD
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
e0447a58-148d-4c6f-94b5-4afb52760dae · Nov 5
$5,393 SGD
$4,222 USD
View
20 more retailers have this diamond
Prices start from $1,847 SGDSave up to $3,546 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
$1,847 SGD