CaratHunter
Plans
Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG843637937

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843637937

Diamond specifications and retailer prices

From €235 EUR
$264 USD
As of November 2, 2026
Save €1,690 EUR (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,926 EUR at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843637937 or 843637937. Listed at 18 retailers as of October 31, 2026, with prices from €235 to €1,926, a €1,690 spread on the same certified stone. Brilliant Earth lists it at €1,926. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843637937
Dimensions11.35 × 5.33 × 3.33 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.35 mm5.33 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843637937
Side View
Table 60.0%Crown 38.9°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.5%

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: €690 EUR|Low: €235 EUR|High: €1,504 EUR|Avg: €727 EUR|-2.1%
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
Retailer 17
November 2, 2026
Retailer 11€235 EUR
Retailer 15€266 EUR
Retailer 4€294 EUR
Retailer 10€300 EUR
Retailer 17€397 EUR
Retailer 2€437 EUR
Retailer 14€503 EUR
Retailer 13€560 EUR
Retailer 3€584 EUR
Retailer 1€690 EUR
Retailer 8€914 EUR
Retailer 5€947 EUR
Retailer 7€992 EUR
Retailer 6€1,039 EUR
Retailer 16€1,180 EUR
Retailer 12€1,457 EUR
Retailer 9€1,504 EUR

6 data points across 17 retailers

18 retailers€235 EUR to €1,926 EUR

A
Cheapest Retailer
-
€235 EUR
$264 USD
A
Retailer 2
-
€266 EUR
$298 USD
View
Final sale: no returns
A
Retailer 3
-
€294 EUR
$330 USD
View
A
Retailer 4
-
€300 EUR
£265 GBP
View
A
Retailer 5
-
€397 EUR
$445 USD
View
A
Retailer 6
-
€437 EUR
$490 USD
View
A
Retailer 7
-
€503 EUR
ZAR 9,107 ZAR
View
A
Retailer 8
-
€560 EUR
£494 GBP
View
A
Retailer 9
-
€584 EUR
$655 USD
View
B+
Retailer 10
-
€690 EUR
$774 USD
View
B+
Retailer 11
-
€914 EUR
$1,025 USD
View
B+
Retailer 12
-
€947 EUR
$1,062 USD
View
B+
Retailer 13
-
€992 EUR
$1,113 USD
View
B+
Retailer 14
-
€1,039 EUR
$1,165 USD
View
B
Retailer 15
-
€1,180 EUR
£1,042 GBP
View
B
Retailer 16
-
€1,457 EUR
SGD 2,208 SGD
View
B
Retailer 17
-
€1,504 EUR
A$2,596 AUD
View
Most Expensive
B
Brilliant Earth
22406151A · Oct 31
€1,926 EUR
$2,160 USD
View
17 more retailers have this diamond
Prices start from €235 EURSave up to €1,690 EUR

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
€235 EUR