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Marquise|Lab Grown

0.78ct G SI1 Marquise Lab Grown Diamond

EX • G/SI1 • FA3-641-641

Diamond specifications and retailer prices

From $409 AUD
$287 USD
As of October 30, 2026
Save $1,221 AUD (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,630 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade. Listed at 4 retailers as of October 30, 2026, with prices from $409 to $1,630, a $1,221 spread on the same certified stone. NZ Jewellers lists it at $1,630. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.78
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading Lab
CertificateFA3-641-641
Dimensions9.39 × 4.74 × 2.96 mm
L/W Ratio1.98
Top View
9.39 mm4.74 mm0.78 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateFA3-641-641
Side View
Table 56.8%CrownGirdlePavilionCuletDepth 62.5%

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: Oct 30
Current: $1,630 AUD|Low: $393 AUD|High: $1,630 AUD|Avg: $711 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 8, 2026
Retailer 2$409 AUD
Retailer 4$474 AUD
Retailer 3$507 AUD
NZ Jewellers$1,630 AUD

6 data points across 4 retailers

4 retailers$409 AUD to $1,630 AUD

B+
Cheapest Retailer
-
$409 AUD
$287 USD
B+
Retailer 2
-
$474 AUD
$333 USD
View
B
Retailer 3
-
$507 AUD
$356 USD
View
Most Expensive
C
NZ Jewellers
fc5b8223-2a28-4f11-b366-c942fdd26683 · Oct 31
$1,630 AUD
$1,145 USD
View
3 more retailers have this diamond
Prices start from $409 AUDSave up to $1,221 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
$409 AUD