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Marquise|Lab Grown|IGI

0.78ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG650412894

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG650412894

Diamond specifications and retailer prices

From $140 AUD
$98 USD
As of November 2, 2026
Save $480 AUD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $619 AUD at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

About this 0.78ct lab-grown marquise diamond

This 0.78ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650412894 or 650412894. Listed at 11 retailers as of October 31, 2026, with prices from $140 to $619, a $480 spread on the same certified stone. Friendly Diamonds lists it at $619. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650412894
Dimensions9.45 × 4.79 × 3.01 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.45 mm4.79 mm0.78 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650412894
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $619 AUD|Low: $140 AUD|High: $925 AUD|Avg: $431 AUD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 2$140 AUD
Retailer 9$162 AUD
Retailer 10$184 AUD
Retailer 14$200 AUD
Retailer 13$278 AUD
Retailer 4$326 AUD
Retailer 8$333 AUD
Retailer 3$353 AUD
Retailer 15$377 AUD
Retailer 12$518 AUD
Retailer 11$557 AUD
Retailer 6$594 AUD
Friendly Diamonds$619 AUD
Retailer 5$853 AUD
Retailer 7$925 AUD

6 data points across 15 retailers

11 retailers$140 AUD to $619 AUD

A
Cheapest Retailer
-
$140 AUD
$98 USD
A
Retailer 2
-
$162 AUD
$114 USD
View
A
Retailer 3
-
$184 AUD
$129 USD
View
A
Retailer 4
-
$200 AUD
HK$1,100 HKD
View
A
Retailer 5
-
$278 AUD
$195 USD
View
A
Retailer 6
-
$333 AUD
£184 GBP
View
A
Retailer 7
-
$353 AUD
$248 USD
View
B+
Retailer 8
-
$377 AUD
£208 GBP
View
B+
Retailer 9
-
$518 AUD
$364 USD
View
B
Retailer 10
-
$557 AUD
$391 USD
View
Most Expensive
B
Friendly Diamonds
6558675 · Oct 31
$619 AUD
$435 USD
View
10 more retailers have this diamond
Prices start from $140 AUDSave up to $480 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.

A
0.78ct Marquise
$140 AUD