CaratHunter
Plans
Marquise|Natural|IGI

1.50ct L SI1 Marquise Natural Diamond

VG • L/SI1 • IGI 512234554

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 512234554

Diamond specifications and retailer prices

From $4,713 AUD
As of November 6, 2026
Save $1,932 AUD (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,644 AUD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 512234554. Listed at 8 retailers as of November 5, 2026, with prices from $4,713 to $6,644, a $1,932 spread on the same certified stone. Cape Diamonds lists it at $6,644. 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

1.50
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle45.4°
Pavilion angle30.3°
OriginNatural
Grading LabIGI
CertificateIGI 512234554
Dimensions10.58 × 6.21 × 3.32 mm
L/W Ratio1.70
Girdle conditionFaceted
Culet sizePointed
Top View
10.58 mm6.21 mm1.50 ctL / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 512234554
Side View
Table 66.0%Crown 45.4°Girdle: STK-VTKPavilion 30.3°Culet: NoneDepth 53.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,644 AUD|Low: $3,970 AUD|High: $6,691 AUD|Avg: $5,284 AUD|+2.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$3,981 AUD
Retailer 5$4,713 AUD
Retailer 6$4,832 AUD
Retailer 2$4,998 AUD
Retailer 3$6,372 AUD
Cape Diamonds$6,644 AUD

42 data points across 6 retailers

8 retailers$4,713 AUD to $6,644 AUD

Retailer 1
-
$3,981 AUD
Price last confirmed 7 days ago
B
Retailer 2
-
$4,713 AUD
View
B
Retailer 3
-
$4,832 AUD
View
B
Retailer 4
-
$4,998 AUD
View
B
Retailer 5
-
$5,218 AUD
View
B
Retailer 6
-
$5,656 AUD
View
B
Retailer 7
-
$6,372 AUD
View
Most Expensive
B
Cape Diamonds
cert_512234554 · Nov 5
$6,644 AUD
ZAR 73,754 ZAR
View
7 more retailers have this diamond
Prices start from $4,713 AUDSave up to $1,932 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.

B
1.50ct Marquise
$4,713 AUD