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Marquise|Lab Grown|IGI

1.28ct G VS1 Marquise Lab Grown Diamond

GD • G/VS1 • IGI LG851604790

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851604790

Diamond specifications and retailer prices

From $296 AUD
As of November 4, 2026
Save $1,440 AUD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,736 AUD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG851604790 or 851604790. Listed at 20 retailers as of November 4, 2026, with prices from $296 to $1,736, a $1,440 spread on the same certified stone. Reve Diamonds lists it at $1,736. 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

1.28
Carat
G
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851604790
Dimensions11.09 × 5.71 × 3.54 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.09 mm5.71 mm1.28 ctG / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851604790
Side View
Table 61.0%Crown 35.3°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.0%

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 4
Current: $447 AUD|Low: $296 AUD|High: $1,736 AUD|Avg: $798 AUD|-0.3%
Retailer 1
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Retailer 3
Retailer 4
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Retailer 10
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Retailer 19
Reve Diamonds
November 4, 2026
Retailer 18$296 AUD
Retailer 7$330 AUD
Retailer 17$343 AUD
Retailer 6$366 AUD
Retailer 8$401 AUD
Retailer 1$447 AUD
Retailer 10$594 AUD
Retailer 5$631 AUD
Retailer 13$631 AUD
Retailer 12$667 AUD
Retailer 3$696 AUD
Retailer 2$719 AUD
Retailer 19$894 AUD
Retailer 15$896 AUD
Retailer 16$979 AUD
Retailer 9$1,177 AUD
Retailer 11$1,187 AUD
Retailer 4$1,253 AUD
Retailer 14$1,467 AUD
Reve Diamonds$1,736 AUD

11 data points across 20 retailers

20 retailers$296 AUD to $1,736 AUD

A
Cheapest Retailer
-
$296 AUD
A
Retailer 2
-
$330 AUD
View
Final sale: no returns
A
Retailer 3
-
$343 AUD
View
A
Retailer 4
-
$366 AUD
View
A
Retailer 5
-
$401 AUD
View
A
Retailer 6
-
$447 AUD
View
Retailer 7
-
$594 AUD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
$631 AUD
View
B+
Retailer 9
-
$631 AUD
View
B+
Retailer 10
-
$667 AUD
View
B+
Retailer 11
-
$696 AUD
View
B+
Retailer 12
-
$719 AUD
View
Retailer 13
-
$894 AUD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$896 AUD
View
B
Retailer 15
-
$979 AUD
View
B
Retailer 16
-
$1,177 AUD
View
B
Retailer 17
-
$1,187 AUD
View
B
Retailer 18
-
$1,253 AUD
View
B
Retailer 19
-
$1,467 AUD
View
Most Expensive
C
Reve Diamonds
DC53B7734 · Nov 4
$1,736 AUD
$1,215 USD
View
19 more retailers have this diamond
Prices start from $296 AUDSave up to $1,440 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
1.28ct Marquise
$296 AUD