Marquise|Lab Grown|IGI

1.21ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG816626986

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG816626986

Diamond specifications and retailer prices

From $367 USD
As of October 30, 2026
Save $1,813 USD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,180 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816626986 or 816626986. Listed at 23 retailers as of October 28, 2026, with prices from $367 to $2,180, a $1,813 spread on the same certified stone. Brilliant Earth lists it at $2,180. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816626986
Dimensions10.98 × 5.48 × 3.48 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.98 mm5.48 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816626986
Side View
Table 59.0%Crown 36.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.5%

Caratlytics Score

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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: Oct 30
Current: $2,180 USD|Low: $311 USD|High: $2,240 USD|Avg: $919 USD|-2.7%
Brilliant Earth
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
October 30, 2026
Retailer 6$311 USD
Retailer 3$367 USD
Retailer 10$407 USD
Retailer 9$615 USD
Retailer 8$653 USD
Retailer 13$657 USD
Retailer 7$699 USD
Retailer 2$727 USD
Retailer 14$813 USD
Retailer 12$1,014 USD
Retailer 4$1,307 USD
Retailer 5$1,352 USD
Retailer 11$1,632 USD
Brilliant Earth$2,180 USD

42 data points across 14 retailers

23 retailers$367 USD to $2,180 USD

Retailer 1
-
$311 USD
Price last confirmed 29 days ago
Retailer 2
-
$322 USD
View
Price last confirmed 18 days ago
Retailer 3
-
$322 USD
View
Price last confirmed 23 days ago
A
Retailer 4
-
$367 USD
View
Final sale: no returns
Retailer 5
-
$375 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$396 USD
View
Price last confirmed 32 days ago
Retailer 7
-
$399 USD
View
Price last confirmed 28 days ago
Retailer 8
-
$399 USD
View
Price last confirmed 20 days ago
Retailer 9
-
$399 USD
View
Price last confirmed 18 days ago
A
Retailer 10
-
$407 USD
View
A
Retailer 11
-
$615 USD
View
A
Retailer 12
-
$653 USD
€622 EUR
View
A
Retailer 13
-
$657 USD
View
A
Retailer 14
-
$699 USD
ZAR 11,290 ZAR
View
A
Retailer 15
-
$727 USD
£573 GBP
View
B+
Retailer 16
-
$813 USD
View
B+
Retailer 17
-
$1,014 USD
View
Retailer 18
-
$1,284 USD
View
Price last confirmed 18 days ago
Retailer 19
-
$1,290 USD
View
Price last confirmed 31 days ago
B
Retailer 20
-
$1,307 USD
View
B
Retailer 21
-
$1,352 USD
View
B
Retailer 22
-
$1,632 USD
£1,285 GBP
View
Most Expensive
B
Brilliant Earth
20999002A · Oct 28
$2,180 USD
View
22 more retailers have this diamond
Prices start from $367 USDSave up to $1,813 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
$367 USD