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1.22ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG779630515

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779630515

Diamond specifications and retailer prices

From €239 EUR
As of November 6, 2026
Save €579 EUR (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €818 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG779630515 or 779630515. Listed at 6 retailers as of November 4, 2026, with prices from €239 to €818, a €579 spread on the same certified stone. MOH London lists it at €818. 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

1.22
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779630515
Dimensions6.84 × 6.87 × 4.21 mm
L/W Ratio1.00
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
6.84 mm6.87 mm1.22 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779630515
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.4%

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 6
Current: €818 EUR|Low: €87 EUR|High: €888 EUR|Avg: €411 EUR|-6.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6€239 EUR
Retailer 2€294 EUR
Retailer 3€305 EUR
Retailer 4€339 EUR
Retailer 5€399 EUR
MOH London€818 EUR

44 data points across 6 retailers

6 retailers€239 EUR to €818 EUR

B+
Cheapest Retailer
-
€239 EUR
A
Retailer 2
-
€294 EUR
View
A
Retailer 3
-
€305 EUR
View
A
Retailer 4
-
€339 EUR
View
B+
Retailer 5
-
€399 EUR
View
Most Expensive
B
MOH London
LG779630515 · Nov 4
€818 EUR
£723 GBP
View
5 more retailers have this diamond
Prices start from €239 EURSave up to €579 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
1.22ct Round
€239 EUR