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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 7421614155

Certificate GIA 7421614155

Diamond specifications and retailer prices

From $1,982 SGD
As of October 31, 2026
Save $3,745 SGD (65%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,727 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 very-good cut grade and certified by GIA 7421614155. Listed at 20 retailers as of October 31, 2026, with prices from $1,982 to $5,727, a $3,745 spread on the same certified stone. NZ Jewellers lists it at $5,727. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7421614155
Dimensions6.30 × 6.22 × 4.01 mm
L/W Ratio1.01
Top View
6.30 mm6.22 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7421614155
Side View
Table 58.0%Crown 37°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 64.0%

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: Oct 31
Current: $2,777 SGD|Low: $1,977 SGD|High: $4,858 SGD|Avg: $3,042 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$1,982 SGD
Retailer 9$1,994 SGD
Retailer 7$2,486 SGD
Retailer 10$2,528 SGD
Retailer 1$2,777 SGD
Retailer 4$2,958 SGD
Retailer 3$3,344 SGD
Retailer 6$3,359 SGD
Retailer 2$3,368 SGD
Retailer 5$4,799 SGD

38 data points across 10 retailers

20 retailers$1,982 SGD to $5,727 SGD

A
Cheapest Retailer
-
$1,982 SGD
A
Retailer 2
-
$1,994 SGD
View
B+
Retailer 3
-
$2,423 SGD
View
Retailer 4
-
$2,443 SGD
View
Price last confirmed 82 days ago
B+
Retailer 5
-
$2,486 SGD
View
B+
Retailer 6
-
$2,528 SGD
View
Final sale: no returns
Retailer 7
-
$2,740 SGD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$2,740 SGD
View
B
Retailer 9
-
$2,765 SGD
View
B
Retailer 10
-
$2,777 SGD
View
B
Retailer 11
-
$2,866 SGD
View
B
Retailer 12
-
$2,916 SGD
View
B
Retailer 13
-
$2,958 SGD
View
B
Retailer 14
-
$3,161 SGD
View
B
Retailer 15
-
$3,344 SGD
View
B
Retailer 16
-
$3,359 SGD
View
Retailer 17
-
$3,368 SGD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$4,449 SGD
View
B
Retailer 19
-
$4,799 SGD
View
Most Expensive
C
NZ Jewellers
810c9545-2c13-417f-bec6-102fb59b971f · Nov 5
$5,727 SGD
$4,484 USD
View
19 more retailers have this diamond
Prices start from $1,982 SGDSave up to $3,745 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
$1,982 SGD