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Marquise|Natural|IGI

1.00ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 843628745

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 843628745

Diamond specifications and retailer prices

From $1,912 SGD
$1,495 USD
As of November 2, 2026
Save $3,142 SGD (62%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,054 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 843628745. Listed at 13 retailers as of October 30, 2026, with prices from $1,912 to $5,054, a $3,142 spread on the same certified stone. NZ Jewellers lists it at $5,054. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle28.5°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 843628745
Dimensions10.75 × 5.25 × 2.98 mm
L/W Ratio2.05
Girdle conditionFaceted
Culet sizeMedium
Top View
10.75 mm5.25 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 843628745
Side View
Table 63.0%Crown 28.5°Girdle: MED-THKPavilion 41.2°Culet: MediumDepth 56.8%

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 2
Current: $5,054 SGD|Low: $1,912 SGD|High: $5,219 SGD|Avg: $2,514 SGD|-3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 3$1,912 SGD
Retailer 13$1,921 SGD
Retailer 7$1,925 SGD
Retailer 5$2,072 SGD
Retailer 12$2,072 SGD
Retailer 11$2,114 SGD
Retailer 4$2,168 SGD
Retailer 2$2,341 SGD
Retailer 10$2,392 SGD
Retailer 8$2,530 SGD
Retailer 9$2,829 SGD
Retailer 6$3,630 SGD
NZ Jewellers$5,054 SGD

13 data points across 13 retailers

13 retailers$1,912 SGD to $5,054 SGD

A
Cheapest Retailer
-
$1,912 SGD
$1,495 USD
Final sale: no returns
A
Retailer 2
-
$1,921 SGD
$1,502 USD
View
A
Retailer 3
-
$1,925 SGD
$1,505 USD
View
A
Retailer 4
-
$2,072 SGD
$1,620 USD
View
A
Retailer 5
-
$2,072 SGD
$1,620 USD
View
A
Retailer 6
-
$2,114 SGD
$1,653 USD
View
A
Retailer 7
-
$2,168 SGD
$1,695 USD
View
A
Retailer 8
-
$2,341 SGD
£1,442 GBP
View
B+
Retailer 9
-
$2,392 SGD
$1,870 USD
View
A
Retailer 10
-
$2,530 SGD
ZAR 31,955 ZAR
View
A
Retailer 11
-
$2,829 SGD
€2,107 EUR
View
B+
Retailer 12
-
$3,630 SGD
£2,235 GBP
View
Most Expensive
B
NZ Jewellers
dd248388-ee08-40d2-9639-c78f6ee0dd9a · Oct 30
$5,054 SGD
$3,952 USD
View
12 more retailers have this diamond
Prices start from $1,912 SGDSave up to $3,142 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
$1,912 SGD