Marquise|Lab Grown|IGI

1.21ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG809686335

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG809686335

Diamond specifications and retailer prices

From $198 USD
As of November 4, 2026
Save $988 USD (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,778 USD at Queensmith · As of October 27, 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 top-tier cut grade and certified by IGI LG809686335 or 809686335. Listed at 22 retailers as of November 4, 2026, with a 499% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809686335
Dimensions11.12 × 5.49 × 3.29 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.12 mm5.49 mm1.21 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809686335
Side View
Table 58.0%Crown 31.9°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 59.9%

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 4
Current: $444 USD|Low: $192 USD|High: $1,227 USD|Avg: $541 USD|+5.0%
Retailer 1
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 4, 2026
Retailer 6$198 USD
Retailer 15$221 USD
Retailer 2$245 USD
Retailer 13$245 USD
Retailer 5$332 USD
Retailer 11$423 USD
Retailer 12$429 USD
Retailer 1$444 USD
Retailer 8$465 USD
Retailer 3$490 USD
Retailer 10$598 USD
Retailer 14$745 USD
Retailer 16$792 USD
Retailer 7$842 USD
Retailer 9$1,146 USD
Retailer 4$1,186 USD

42 data points across 16 retailers

22 retailers$198 USD to $1,186 USD

Retailer 1
-
$192 USD
Price last confirmed 35 days ago
Retailer 2
-
$198 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$198 USD
View
A
Retailer 4
-
$221 USD
View
Final sale: no returns
Retailer 5
-
$223 USD
View
Price last confirmed 36 days ago
Retailer 6
-
$236 USD
View
Price last confirmed 36 days ago
Retailer 7
-
$245 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$245 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$332 USD
View
A
Retailer 10
-
$423 USD
View
Retailer 11
-
$429 USD
View
Price last confirmed 8 days ago
A
Retailer 12
-
$444 USD
View
A
Retailer 13
-
$465 USD
View
A
Retailer 14
-
$490 USD
View
B+
Retailer 15
-
$598 USD
View
Retailer 16
-
$745 USD
View
Price last confirmed 7 days ago
Retailer 17
-
$767 USD
View
Price last confirmed 35 days ago
B
Retailer 18
-
$792 USD
View
B
Retailer 19
-
$842 USD
View
B
Retailer 20
-
$1,146 USD
View
B
Retailer 21
-
$1,186 USD
View
Most Expensive
Queensmith
LG809686335 · Oct 27
$1,778 USD
£1,400 GBP
View
Price last confirmed 8 days ago
21 more retailers have this diamond
Prices start from $198 USDSave up to $988 USD

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
$198 USD