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Marquise|Natural|IGI

1.51ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 792677969

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 792677969

Diamond specifications and retailer prices

From $4,013 AUD
As of November 5, 2026
Save $3,158 AUD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,171 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 792677969. Listed at 9 retailers as of November 5, 2026, with prices from $4,013 to $7,171, a $3,158 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,171. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.7°
Pavilion angle37.7°
OriginNatural
Grading LabIGI
CertificateIGI 792677969
Dimensions12.32 × 5.76 × 3.40 mm
L/W Ratio2.14
Girdle conditionFaceted
Culet sizePointed
Top View
12.32 mm5.76 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 792677969
Side View
Table 60.0%Crown 38.7°Girdle: MED-THKPavilion 37.7°Culet: NoneDepth 59.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,213 AUD|Low: $3,992 AUD|High: $7,857 AUD|Avg: $5,229 AUD|-9.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 6, 2026
Retailer 3$4,013 AUD
Retailer 5$4,224 AUD
Retailer 4$4,242 AUD
Retailer 2$4,665 AUD
Retailer 6$5,050 AUD
Retailer 7$5,175 AUD
Retailer 1$5,213 AUD
Wholesale Diamonds Direct$7,171 AUD

44 data points across 8 retailers

9 retailers$4,013 AUD to $7,171 AUD

A
Cheapest Retailer
-
$4,013 AUD
A
Retailer 2
-
$4,224 AUD
View
A
Retailer 3
-
$4,242 AUD
View
A
Retailer 4
-
$4,665 AUD
View
A
Retailer 5
-
$5,050 AUD
View
A
Retailer 6
-
$5,175 AUD
View
B+
Retailer 7
-
$5,213 AUD
View
B+
Retailer 8
-
$5,237 AUD
View
Most Expensive
B+
Wholesale Diamonds Direct
262936449 · Nov 6
$7,171 AUD
$4,927 USD
View
8 more retailers have this diamond
Prices start from $4,013 AUDSave up to $3,158 AUD

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
1.51ct Marquise
$4,013 AUD