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Marquise|Natural|IGI

1.51ct J I1 Marquise Natural Diamond

VG • J/I1 • IGI 660411128

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 660411128

Diamond specifications and retailer prices

From $2,964 SGD
$2,318 USD
As of November 1, 2026
Save $3,959 SGD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,924 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by IGI 660411128. Listed at 8 retailers as of October 30, 2026, with prices from $2,964 to $6,924, a $3,959 spread on the same certified stone. NZ Jewellers lists it at $6,924. 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

1.51
Carat
J
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.1°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 660411128
Dimensions10.58 × 6.02 × 4.00 mm
L/W Ratio1.76
Girdle conditionFaceted
Culet sizePointed
Top View
10.58 mm6.02 mm1.51 ctJ / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 660411128
Side View
Table 58.0%Crown 39.1°Girdle: ThickPavilion 40.3°Culet: NoneDepth 66.4%

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 1
Current: $6,924 SGD|Low: $1,928 SGD|High: $6,924 SGD|Avg: $3,762 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10$1,928 SGD
Retailer 5$2,964 SGD
Retailer 3$3,311 SGD
Retailer 7$3,311 SGD
Retailer 4$3,465 SGD
Retailer 6$3,490 SGD
Retailer 8$3,821 SGD
Retailer 9$3,941 SGD
Retailer 2$4,135 SGD
NZ Jewellers$6,924 SGD

20 data points across 10 retailers

8 retailers$2,964 SGD to $6,924 SGD

B+
Cheapest Retailer
-
$2,964 SGD
$2,318 USD
B+
Retailer 2
-
$3,311 SGD
$2,589 USD
View
B+
Retailer 3
-
$3,311 SGD
$2,589 USD
View
B+
Retailer 4
-
$3,465 SGD
$2,709 USD
View
B+
Retailer 5
-
$3,490 SGD
$2,729 USD
View
B+
Retailer 6
-
$3,821 SGD
$2,988 USD
View
B+
Retailer 7
-
$4,135 SGD
€3,079 EUR
View
Most Expensive
B+
NZ Jewellers
9c4533ac-9271-4c89-8af5-dd7c553a46b4 · Oct 30
$6,924 SGD
$5,414 USD
View
7 more retailers have this diamond
Prices start from $2,964 SGDSave up to $3,959 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+
1.51ct Marquise
$2,964 SGD