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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 $341 NZD
As of November 2, 2026
Save $1,733 NZD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,154 NZD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,154 NZD|Low: $380 NZD|High: $3,154 NZD|Avg: $1,133 NZD
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$380 NZD
Retailer 13$424 NZD
Retailer 10$564 NZD
Retailer 3$571 NZD
Retailer 5$724 NZD
Retailer 11$729 NZD
Retailer 2$763 NZD
Retailer 6$820 NZD
Retailer 16$859 NZD
Retailer 9$1,031 NZD
Retailer 14$1,361 NZD
Retailer 15$1,366 NZD
Retailer 8$1,455 NZD
Retailer 12$1,978 NZD
Retailer 7$2,074 NZD
Queensmith$3,154 NZD

8 data points across 16 retailers

16 retailers$341 NZD to $2,074 NZD

A
Cheapest Retailer
-
$341 NZD
A
Retailer 2
-
$380 NZD
View
Final sale: no returns
A
Retailer 3
-
$424 NZD
View
A
Retailer 4
-
$564 NZD
View
B+
Retailer 5
-
$571 NZD
View
A
Retailer 6
-
$729 NZD
View
A
Retailer 7
-
$763 NZD
View
A
Retailer 8
-
$820 NZD
View
B+
Retailer 9
-
$859 NZD
View
B+
Retailer 10
-
$1,031 NZD
View
B+
Retailer 11
-
$1,361 NZD
View
B+
Retailer 12
-
$1,366 NZD
View
B
Retailer 13
-
$1,455 NZD
View
B
Retailer 14
-
$1,978 NZD
View
B
Retailer 15
-
$2,074 NZD
View
Most Expensive
Queensmith
LG809688217 · Oct 28
$3,154 NZD
£1,400 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from $341 NZDSave up to $1,733 NZD

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
$341 NZD