CaratHunter
Plans
Marquise|Natural|IGI

1.00ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 689598934

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 689598934

Diamond specifications and retailer prices

From $1,797 SGD
As of November 6, 2026
Save $1,614 SGD (47%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,133 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise 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 IGI 689598934. Listed at 20 retailers as of November 1, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceFaint
Crown angle37.7°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 689598934
Dimensions9.42 × 5.28 × 3.42 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizePointed
Top View
9.42 mm5.28 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 689598934
Side View
Table 56.0%Crown 37.7°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 64.8%

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: $2,188 SGD|Low: $1,780 SGD|High: $3,729 SGD|Avg: $2,225 SGD|-4.2%
Retailer 1
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
November 6, 2026
Retailer 13$1,797 SGD
Retailer 3$1,804 SGD
Retailer 8$1,813 SGD
Retailer 4$1,943 SGD
Retailer 2$1,948 SGD
Retailer 12$1,948 SGD
Retailer 14$2,035 SGD
Retailer 11$2,063 SGD
Retailer 6$2,121 SGD
Retailer 1$2,188 SGD
Retailer 5$2,247 SGD
Retailer 7$2,376 SGD
Retailer 9$2,648 SGD
Retailer 10$3,410 SGD

44 data points across 14 retailers

20 retailers$1,797 SGD to $3,410 SGD

A
Cheapest Retailer
-
$1,797 SGD
Final sale: no returns
A
Retailer 2
-
$1,804 SGD
View
A
Retailer 3
-
$1,813 SGD
View
A
Retailer 4
-
$1,943 SGD
View
Retailer 5
-
$1,948 SGD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$1,948 SGD
View
A
Retailer 7
-
$2,035 SGD
View
B+
Retailer 8
-
$2,063 SGD
View
Retailer 9
-
$2,104 SGD
View
Price last confirmed 54 days ago
Retailer 10
-
$2,104 SGD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
$2,121 SGD
View
A
Retailer 12
-
$2,188 SGD
View
Retailer 13
-
$2,202 SGD
View
Price last confirmed 37 days ago
B+
Retailer 14
-
$2,247 SGD
View
B+
Retailer 15
-
$2,376 SGD
View
Retailer 16
-
$2,429 SGD
View
Price last confirmed 57 days ago
Retailer 17
-
$2,429 SGD
View
Price last confirmed 39 days ago
B+
Retailer 18
-
$2,648 SGD
View
B
Retailer 19
-
$3,410 SGD
View
Most Expensive
NZ Jewellers
36f09cd1-85cf-45be-90c3-571855ff41b1 · Sep 30
$5,133 SGD
$4,005 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from $1,797 SGDSave up to $1,614 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 Marquise
$1,797 SGD