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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1559494856

Certificate GIA 1559494856

Diamond specifications and retailer prices

From $1,700 SGD
As of November 6, 2026
Save $3,697 SGD (68%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,397 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1559494856. Listed at 20 retailers as of November 5, 2026, with prices from $1,700 to $5,397, a $3,697 spread on the same certified stone. NZ Jewellers lists it at $5,397. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1559494856
Dimensions6.18 × 6.24 × 3.98 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Needle, Indented Natural, Natural
Top View
6.18 mm6.24 mm1.00 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559494856
Side View
Table 59.0%Crown 38°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.1%

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: $1,710 SGD|Low: $1,700 SGD|High: $3,924 SGD|Avg: $2,462 SGD|-3.5%
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 10$1,700 SGD
Retailer 1$1,710 SGD
Retailer 2$2,041 SGD
Retailer 7$2,072 SGD
Retailer 11$2,205 SGD
Retailer 4$2,373 SGD
Retailer 5$2,441 SGD
Retailer 3$2,464 SGD
Retailer 6$2,570 SGD
Retailer 8$2,906 SGD
Retailer 9$3,865 SGD

32 data points across 11 retailers

20 retailers$1,700 SGD to $5,397 SGD

A
Cheapest Retailer
-
$1,700 SGD
A
Retailer 2
-
$1,710 SGD
View
B+
Retailer 3
-
$2,016 SGD
View
B+
Retailer 4
-
$2,041 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,072 SGD
View
B+
Retailer 6
-
$2,205 SGD
View
B+
Retailer 7
-
$2,212 SGD
View
Retailer 8
-
$2,212 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,314 SGD
View
B+
Retailer 10
-
$2,373 SGD
View
B+
Retailer 11
-
$2,387 SGD
View
B+
Retailer 12
-
$2,410 SGD
View
B+
Retailer 13
-
$2,441 SGD
View
B+
Retailer 14
-
$2,464 SGD
View
B+
Retailer 15
-
$2,553 SGD
View
B+
Retailer 16
-
$2,570 SGD
View
B
Retailer 17
-
$2,906 SGD
View
B
Retailer 18
-
$3,295 SGD
View
B
Retailer 19
-
$3,865 SGD
View
Most Expensive
C
NZ Jewellers
487f54e0-6499-4d20-a69f-4a5bfdf0dac6 · Nov 5
$5,397 SGD
$4,225 USD
View
19 more retailers have this diamond
Prices start from $1,700 SGDSave up to $3,697 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
$1,700 SGD