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Marquise|Natural|IGI

1.01ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 803629020

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 803629020

Diamond specifications and retailer prices

From $2,629 SGD
$2,056 USD
As of October 31, 2026
Save $2,471 SGD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,270 SGD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct 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 803629020. Listed at 18 retailers as of October 31, 2026, with a 94% 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

1.01
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 803629020
Dimensions9.75 × 5.17 × 3.34 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
9.75 mm5.17 mm1.01 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629020
Side View
Table 60.0%Crown 39.2°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 64.6%

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: $5,100 SGD|Low: $2,629 SGD|High: $5,318 SGD|Avg: $3,481 SGD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11$2,629 SGD
Retailer 3$2,686 SGD
Retailer 9$2,711 SGD
Retailer 5$2,839 SGD
Retailer 10$2,843 SGD
Retailer 4$2,999 SGD
Retailer 12$3,062 SGD
Retailer 8$3,089 SGD
Retailer 7$3,223 SGD
Retailer 2$3,578 SGD
Retailer 6$3,634 SGD
Retailer 1$5,100 SGD

36 data points across 12 retailers

18 retailers$2,629 SGD to $5,100 SGD

A
Cheapest Retailer
-
$2,629 SGD
$2,056 USD
A
Retailer 2
-
$2,686 SGD
$2,100 USD
View
Final sale: no returns
A
Retailer 3
-
$2,711 SGD
$2,120 USD
View
A
Retailer 4
-
$2,839 SGD
£1,748 GBP
View
B+
Retailer 5
-
$2,843 SGD
$2,223 USD
View
B+
Retailer 6
-
$2,999 SGD
$2,345 USD
View
Retailer 7
-
$2,999 SGD
$2,345 USD
View
Price last confirmed 32 days ago
Retailer 8
-
$2,999 SGD
$2,345 USD
View
Price last confirmed 17 days ago
B+
Retailer 9
-
$3,062 SGD
$2,394 USD
View
B+
Retailer 10
-
$3,089 SGD
$2,415 USD
View
Retailer 11
-
$3,137 SGD
$2,453 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$3,223 SGD
£1,984 GBP
View
Retailer 13
-
$3,461 SGD
$2,706 USD
View
Price last confirmed 48 days ago
Retailer 14
-
$3,461 SGD
$2,706 USD
View
Price last confirmed 34 days ago
B+
Retailer 15
-
$3,578 SGD
ZAR 45,193 ZAR
View
B+
Retailer 16
-
$3,634 SGD
€2,706 EUR
View
B
Retailer 17
-
$5,100 SGD
£3,140 GBP
View
Most Expensive
NZ Jewellers
f17c358e-89c4-4a37-a46d-cfeeec25a26e · Sep 29
$6,270 SGD
$4,903 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from $2,629 SGDSave up to $2,471 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
1.01ct Marquise
$2,629 SGD