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Marquise|Lab Grown|GCAL

1.78ct E FL Marquise Lab Grown Diamond

EX • E/FL • GCAL 360726380

Shape and cutting style on the report: Marquise brilliant

Certificate GCAL 360726380

Diamond specifications and retailer prices

From $6,063 AUD
CA$5,915 CAD
As of October 30, 2026
Save $5,911 AUD (49%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $16,372 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GCAL 360726380. Listed at 6 retailers as of October 29, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 360726380
Dimensions12.14 × 6.45 × 3.95 mm
L/W Ratio1.88
Culet sizeNone
Top View
12.14 mm6.45 mm1.78 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 360726380
Side View
Table 61.0%Crown 34.5°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 61.3%

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: $11,974 AUD|Low: $5,152 AUD|High: $23,489 AUD|Avg: $10,456 AUD|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Taylor and Hart
October 29, 2026
Retailer 6$5,152 AUD
Retailer 5$6,012 AUD
Retailer 4$6,063 AUD
Retailer 8$6,647 AUD
Retailer 7$8,464 AUD
Retailer 2$9,835 AUD
Retailer 1$11,974 AUD
Taylor and Hart$16,372 AUD
Retailer 3$23,489 AUD

16 data points across 9 retailers

6 retailers$6,063 AUD to $11,974 AUD

Retailer 1
-
$6,012 AUD
$4,223 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$6,063 AUD
CA$5,915 CAD
View
B
Retailer 3
-
$6,647 AUD
$4,669 USD
View
B
Retailer 4
-
$11,974 AUD
£6,623 GBP
View
Most Expensive
Taylor and Hart
8OE2CDX · Oct 30
$16,372 AUD
$11,501 USD
View
Price under review
4 more retailers have this diamond
Prices start from $6,063 AUDSave up to $5,911 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+
1.78ct Marquise
$6,063 AUD