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Marquise|Lab Grown|IGI

1.21ct D VS1 Marquise Lab Grown Diamond

VG • D/VS1 • IGI LG809688217

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG809688217

Diamond specifications and retailer prices

From $274 AUD
As of November 2, 2026
Save $1,393 AUD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,535 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG809688217 or 809688217. Listed at 16 retailers as of November 1, 2026, with a 509% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809688217
Dimensions11.72 × 5.59 × 3.17 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.72 mm5.59 mm1.21 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809688217
Side View
Table 60.0%Crown 32.2°Girdle: MED-STKPavilion 37.5°Culet: NoneDepth 56.7%

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: $2,535 AUD|Low: $305 AUD|High: $2,535 AUD|Avg: $910 AUD
Queensmith
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
Retailer 16
November 3, 2026
Retailer 4$305 AUD
Retailer 13$341 AUD
Retailer 10$453 AUD
Retailer 3$459 AUD
Retailer 5$582 AUD
Retailer 11$586 AUD
Retailer 2$613 AUD
Retailer 6$659 AUD
Retailer 16$690 AUD
Retailer 9$828 AUD
Retailer 14$1,093 AUD
Retailer 15$1,098 AUD
Retailer 8$1,169 AUD
Retailer 12$1,589 AUD
Retailer 7$1,666 AUD
Queensmith$2,535 AUD

8 data points across 16 retailers

16 retailers$274 AUD to $1,666 AUD

A
Cheapest Retailer
-
$274 AUD
A
Retailer 2
-
$305 AUD
View
Final sale: no returns
A
Retailer 3
-
$341 AUD
View
A
Retailer 4
-
$453 AUD
View
B+
Retailer 5
-
$459 AUD
View
A
Retailer 6
-
$586 AUD
View
A
Retailer 7
-
$613 AUD
View
A
Retailer 8
-
$659 AUD
View
B+
Retailer 9
-
$690 AUD
View
B+
Retailer 10
-
$828 AUD
View
B+
Retailer 11
-
$1,093 AUD
View
B+
Retailer 12
-
$1,098 AUD
View
B
Retailer 13
-
$1,169 AUD
View
B
Retailer 14
-
$1,589 AUD
View
B
Retailer 15
-
$1,666 AUD
View
Most Expensive
Queensmith
LG809688217 · Oct 28
$2,535 AUD
£1,400 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from $274 AUDSave up to $1,393 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
1.21ct Marquise
$274 AUD