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Marquise|Lab Grown|IGI

1.51ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG849664064

Certificate IGI LG849664064

Diamond specifications and retailer prices

From $631 AUD
As of November 6, 2026
Save $617 AUD (49%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,248 AUD at Taylor and Hart · As of November 6, 2026
View at Taylor and Hart

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG849664064 or 849664064. Listed at 3 retailers as of November 6, 2026, with prices from $631 to $1,248, a $617 spread on the same certified stone. Taylor and Hart lists it at $1,248. 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
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG849664064
Dimensions13.22 × 5.85 × 3.28 mm
L/W Ratio2.26
Top View
13.22 mm5.85 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849664064
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCuletDepth 56.1%

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: $631 AUD|Low: $631 AUD|High: $1,248 AUD|Avg: $848 AUD
Retailer 1
Retailer 2
Taylor and Hart
November 6, 2026
Retailer 1$631 AUD
Retailer 2$664 AUD
Taylor and Hart$1,248 AUD

1 data point across 3 retailers

3 retailers$631 AUD to $1,248 AUD

B
Cheapest Retailer
-
$631 AUD
B
Retailer 2
-
$664 AUD
View
Most Expensive
Taylor and Hart
3YPGDWJ · Nov 6
$1,248 AUD
$874 USD
View
2 more retailers have this diamond
Prices start from $631 AUDSave up to $617 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
1.51ct Marquise
$631 AUD