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Marquise|Natural|IGI

1.00ct K SI1 Marquise Natural Diamond

GD • K/SI1 • IGI 116423802

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 116423802

Diamond specifications and retailer prices

From $1,462 SGD
As of November 6, 2026
Save $2,133 SGD (59%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,019 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 116423802. Listed at 16 retailers as of November 4, 2026, with a 146% 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
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 116423802
Dimensions9.61 × 5.35 × 3.01 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Top View
9.61 mm5.35 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 116423802
Side View
Table 68.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 56.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,462 SGD|Low: $1,462 SGD|High: $3,647 SGD|Avg: $2,274 SGD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$1,462 SGD
Retailer 7$1,916 SGD
Retailer 8$2,034 SGD
Retailer 9$2,057 SGD
Retailer 10$2,057 SGD
Retailer 2$2,153 SGD
Retailer 4$2,321 SGD
Retailer 5$2,511 SGD
Retailer 3$2,794 SGD
Retailer 6$3,595 SGD

38 data points across 10 retailers

16 retailers$1,462 SGD to $3,595 SGD

B+
Cheapest Retailer
-
$1,462 SGD
B+
Retailer 2
-
$1,907 SGD
View
B+
Retailer 3
-
$1,910 SGD
View
B+
Retailer 4
-
$1,916 SGD
View
B+
Retailer 5
-
$2,034 SGD
View
Retailer 6
-
$2,057 SGD
View
Price last confirmed 9 days ago
Retailer 7
-
$2,057 SGD
View
Price last confirmed 40 days ago
B+
Retailer 8
-
$2,057 SGD
View
B+
Retailer 9
-
$2,153 SGD
View
B+
Retailer 10
-
$2,231 SGD
View
B+
Retailer 11
-
$2,321 SGD
View
Retailer 12
-
$2,374 SGD
View
Price last confirmed 39 days ago
B+
Retailer 13
-
$2,511 SGD
View
B
Retailer 14
-
$2,794 SGD
View
B
Retailer 15
-
$3,595 SGD
View
Most Expensive
NZ Jewellers
732e013f-4f37-4dee-886c-c5643a8a5f70 · Sep 30
$5,019 SGD
$3,916 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $1,462 SGDSave up to $2,133 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.

B+
1.00ct Marquise
$1,462 SGD