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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1568153979

Certificate GIA 1568153979

Diamond specifications and retailer prices

From $1,784 SGD
As of November 6, 2026
Save $2,665 SGD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,450 SGD at MOH London · As of November 4, 2026
View at MOH London

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 top-tier cut grade and certified by GIA 1568153979. Listed at 9 retailers as of November 4, 2026, with prices from $1,784 to $4,450, a $2,665 spread on the same certified stone. MOH London lists it at $4,450. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1568153979
Dimensions6.38 × 6.42 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Etch Channel, Needle
Top View
6.38 mm6.42 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568153979
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,450 SGD|Low: $1,784 SGD|High: $4,510 SGD|Avg: $2,917 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$1,784 SGD
Retailer 4$2,261 SGD
Retailer 2$2,295 SGD
Retailer 5$2,587 SGD
Retailer 6$3,041 SGD
Retailer 7$3,108 SGD
MOH London$4,450 SGD

29 data points across 7 retailers

9 retailers$1,784 SGD to $4,450 SGD

A
Cheapest Retailer
-
$1,784 SGD
A
Retailer 2
-
$2,261 SGD
View
B+
Retailer 3
-
$2,295 SGD
View
B+
Retailer 4
-
$2,587 SGD
View
B+
Retailer 5
-
$2,593 SGD
View
B+
Retailer 6
-
$3,041 SGD
View
B
Retailer 7
-
$3,108 SGD
View
Retailer 8
-
$3,140 SGD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
5F94434A1 · Nov 4
$4,450 SGD
£2,743 GBP
View
8 more retailers have this diamond
Prices start from $1,784 SGDSave up to $2,665 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
$1,784 SGD