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Marquise|Lab Grown|IGI

12.55ct G VVS2 Marquise Lab Grown Diamond

ID • G/VVS2 • IGI LG797606340

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797606340

Diamond specifications and retailer prices

From $4,051 AUD
$2,839 USD
As of November 1, 2026
Save $3,410 AUD (46%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $7,461 AUD at Brilliance · As of November 1, 2026
View at Brilliance

About this 12.55ct lab-grown marquise diamond

This 12.55ct lab-grown marquise sits in the over five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG797606340 or 797606340. Listed at 2 retailers as of November 1, 2026, with prices from $4,051 to $7,461, a $3,410 spread on the same certified stone. Brilliance lists it at $7,461. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

12.55
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797606340
Dimensions24.22 × 12.15 × 7.47 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
24.22 mm12.15 mm12.55 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797606340
Side View
Table 59.0%Crown 34.9°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 61.5%

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 1
Current: $7,461 AUD|Low: $3,893 AUD|High: $20,208 AUD|Avg: $8,606 AUD|-14.3%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 27, 2026
Retailer 2$4,051 AUD
Retailer 5$4,354 AUD
Retailer 7$4,528 AUD
Brilliance$7,461 AUD
Retailer 4$8,624 AUD
Retailer 6$10,293 AUD
Retailer 3$20,208 AUD

10 data points across 7 retailers

2 retailers$4,051 AUD to $7,461 AUD

B+
Cheapest Retailer
-
$4,051 AUD
$2,839 USD
Most Expensive
B+
Brilliance
D41922779 · Nov 1
$7,461 AUD
$5,229 USD
View
1 more retailer has this diamond
Prices start from $4,051 AUDSave up to $3,410 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+
12.55ct Marquise
$4,051 AUD