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Marquise|Natural|IGI

1.00ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 807646677

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 807646677

Diamond specifications and retailer prices

From $1,765 SGD
As of October 29, 2026
Save $2,957 SGD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,722 SGD at NZ Jewellers · As of October 27, 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 807646677. Listed at 14 retailers as of October 27, 2026, with prices from $1,765 to $4,722, a $2,957 spread on the same certified stone. NZ Jewellers lists it at $4,722. 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
SymmetryVery Good
FluorescenceFaint
Crown angle36.9°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 807646677
Dimensions9.18 × 5.25 × 3.40 mm
L/W Ratio1.75
Girdle conditionFaceted
Top View
9.18 mm5.25 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 807646677
Side View
Table 56.0%Crown 36.9°Girdle: STK-THKPavilion 38.2°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: Oct 29
Current: $1,871 SGD|Low: $1,611 SGD|High: $3,432 SGD|Avg: $2,245 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$1,631 SGD
Retailer 9$1,765 SGD
Retailer 10$1,787 SGD
Retailer 1$1,871 SGD
Retailer 6$1,944 SGD
Retailer 11$2,026 SGD
Retailer 7$2,204 SGD
Retailer 3$2,234 SGD
Retailer 5$2,640 SGD
Retailer 2$2,791 SGD
Retailer 4$3,411 SGD

33 data points across 11 retailers

14 retailers$1,765 SGD to $4,722 SGD

Retailer 1
-
$1,631 SGD
€1,214 EUR
Price last confirmed 7 days ago
A
Retailer 2
-
$1,765 SGD
View
A
Retailer 3
-
$1,778 SGD
$1,390 USD
View
A
Retailer 4
-
$1,871 SGD
$1,463 USD
View
A
Retailer 5
-
$1,931 SGD
$1,510 USD
View
Retailer 6
-
$1,936 SGD
$1,514 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,944 SGD
$1,520 USD
View
Retailer 8
-
$2,026 SGD
$1,584 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,204 SGD
£1,357 GBP
View
B+
Retailer 10
-
$2,234 SGD
$1,747 USD
View
B+
Retailer 11
-
$2,640 SGD
€1,966 EUR
View
B+
Retailer 12
-
$2,791 SGD
$2,182 USD
View
B+
Retailer 13
-
$3,411 SGD
£2,100 GBP
View
Most Expensive
B
NZ Jewellers
4d1f7614-4d6b-415c-b36a-05c362ee557a · Oct 27
$4,722 SGD
$3,692 USD
View
13 more retailers have this diamond
Prices start from $1,765 SGDSave up to $2,957 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
$1,765 SGD