CaratHunter
Plans
Round|Lab Grown|IGI

1.21ct E SI2 Round Lab Grown Diamond

EX • E/SI2 • IGI LG772660992

Shape and cutting style on the report: Round brilliant

Certificate IGI LG772660992

Diamond specifications and retailer prices

From $164 USD
As of October 29, 2026
Save $792 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $956 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG772660992 or 772660992. Listed at 15 retailers as of October 29, 2026, with prices from $164 to $956, a $792 spread on the same certified stone. MOH London lists it at $956. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772660992
Dimensions6.81 × 6.70 × 4.20 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
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
6.81 mm6.70 mm1.21 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772660992
Side View
Table 61.0%Crown 37.4°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 62.2%

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: Oct 29
Current: $956 USD|Low: $158 USD|High: $963 USD|Avg: $420 USD|-0.4%
MOH London
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 12$164 USD
Retailer 13$184 USD
Retailer 6$200 USD
Retailer 5$203 USD
Retailer 9$351 USD
Retailer 8$358 USD
Retailer 3$366 USD
Retailer 10$450 USD
Retailer 14$453 USD
Retailer 4$456 USD
Retailer 7$471 USD
Retailer 11$522 USD
Retailer 2$560 USD
MOH London$956 USD

34 data points across 14 retailers

15 retailers$164 USD to $956 USD

A
Cheapest Retailer
-
$164 USD
A
Retailer 2
-
$184 USD
View
Final sale: no returns
Retailer 3
-
$200 USD
View
Price last confirmed 45 days ago
A
Retailer 4
-
$203 USD
View
A
Retailer 5
-
$351 USD
€334 EUR
View
B+
Retailer 6
-
$358 USD
£282 GBP
View
B+
Retailer 7
-
$366 USD
View
Retailer 8
-
$450 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$453 USD
View
B+
Retailer 10
-
$456 USD
View
B+
Retailer 11
-
$471 USD
£371 GBP
View
Retailer 12
-
$483 USD
View
Price last confirmed 82 days ago
B
Retailer 13
-
$522 USD
View
B+
Retailer 14
-
$560 USD
View
Most Expensive
B
MOH London
LG772660992 · Oct 29
$956 USD
£753 GBP
View
14 more retailers have this diamond
Prices start from $164 USDSave up to $792 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 Round
$164 USD