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Round|Lab Grown|IGI

1.21ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG763668397

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763668397

Diamond specifications and retailer prices

From €144 EUR
As of November 1, 2026
Save €690 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €834 EUR at MOH London · As of November 1, 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG763668397 or 763668397. Listed at 13 retailers as of November 1, 2026, with prices from €144 to €834, a €690 spread on the same certified stone. MOH London lists it at €834. 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
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763668397
Dimensions6.92 × 6.90 × 4.05 mm
L/W Ratio1.00
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
6.92 mm6.90 mm1.21 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG763668397
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 58.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €834 EUR|Low: €136 EUR|High: €858 EUR|Avg: €368 EUR|-2.8%
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
November 6, 2026
Retailer 10€144 EUR
Retailer 11€161 EUR
Retailer 5€177 EUR
Retailer 4€178 EUR
Retailer 2€310 EUR
Retailer 8€311 EUR
Retailer 13€322 EUR
Retailer 3€330 EUR
Retailer 12€402 EUR
Retailer 6€403 EUR
Retailer 7€487 EUR
Retailer 9€493 EUR
MOH London€834 EUR

36 data points across 13 retailers

13 retailers€144 EUR to €834 EUR

A
Cheapest Retailer
-
€144 EUR
A
Retailer 2
-
€161 EUR
View
Final sale: no returns
Retailer 3
-
€177 EUR
View
Price last confirmed 53 days ago
Retailer 4
-
€178 EUR
View
Price last confirmed 13 days ago
B+
Retailer 5
-
€310 EUR
View
B+
Retailer 6
-
€311 EUR
View
B
Retailer 7
-
€322 EUR
View
B+
Retailer 8
-
€330 EUR
View
B+
Retailer 9
-
€402 EUR
View
B+
Retailer 10
-
€403 EUR
View
B
Retailer 11
-
€487 EUR
View
B
Retailer 12
-
€493 EUR
View
Most Expensive
B
MOH London
LG763668397 · Nov 1
€834 EUR
£733 GBP
View
12 more retailers have this diamond
Prices start from €144 EURSave up to €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 Round
€144 EUR