Marquise|Lab Grown

0.78ct F SI2 Marquise Lab Grown Diamond

F/SI2 • EC290DD9BB

Diamond specifications and retailer prices

From $161 AUD
$113 USD
As of November 2, 2026
Save $481 AUD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $642 AUD at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 0.78ct lab-grown marquise diamond

This 0.78ct lab-grown marquise sits in the just-under-one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included). Listed at 4 retailers as of October 31, 2026, with prices from $161 to $642, a $481 spread on the same certified stone. NZ Jewellers lists it at $642. 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

0.78
Carat
F
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateEC290DD9BB
Dimensions9.16 × 4.74 × 3.01 mm
L/W Ratio1.93
Top View
9.16 mm4.74 mm0.78 ctF / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateEC290DD9BB
Side View
TableCrownGirdlePavilionCulet: NoneDepth 63.5%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $642 AUD|Low: $154 AUD|High: $642 AUD|Avg: $284 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2$161 AUD
Retailer 4$187 AUD
Retailer 3$213 AUD
NZ Jewellers$642 AUD

6 data points across 4 retailers

4 retailers$161 AUD to $642 AUD

B+
Cheapest Retailer
-
$161 AUD
$113 USD
B+
Retailer 2
-
$187 AUD
$131 USD
View
B+
Retailer 3
-
$213 AUD
$149 USD
View
Most Expensive
C
NZ Jewellers
b0d99c02-1942-4040-a986-df04677d7a46 · Oct 31
$642 AUD
$450 USD
View
3 more retailers have this diamond
Prices start from $161 AUDSave up to $481 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+
0.78ct Marquise
$161 AUD