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Round|Lab Grown|IGI

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG799634541

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799634541

Diamond specifications and retailer prices

From €158 EUR
As of November 5, 2026
Save €839 EUR (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €997 EUR at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.23ct lab-grown round diamond

This 1.23ct 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 LG799634541 or 799634541. Listed at 20 retailers as of November 5, 2026, with prices from €158 to €997, a €839 spread on the same certified stone. Reve Diamonds lists it at €997. 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

1.23
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799634541
Dimensions6.86 × 6.84 × 4.26 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
6.86 mm6.84 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799634541
Side View
Table 56.0%Crown 35.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.2%

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 5
Current: €383 EUR|Low: €151 EUR|High: €923 EUR|Avg: €410 EUR|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10€158 EUR
Retailer 8€176 EUR
Retailer 3€195 EUR
Retailer 11€263 EUR
Retailer 5€346 EUR
Retailer 4€361 EUR
Retailer 1€383 EUR
Retailer 6€432 EUR
Retailer 7€663 EUR
Retailer 2€668 EUR
Retailer 9€916 EUR

40 data points across 11 retailers

20 retailers€158 EUR to €997 EUR

A
Cheapest Retailer
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€158 EUR
A
Retailer 2
-
€176 EUR
View
Final sale: no returns
A
Retailer 3
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€183 EUR
View
A
Retailer 4
-
€195 EUR
View
Retailer 5
-
€195 EUR
View
Price last confirmed 12 days ago
A
Retailer 6
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€217 EUR
View
B+
Retailer 7
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€263 EUR
View
A
Retailer 8
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€346 EUR
View
B+
Retailer 9
-
€348 EUR
View
B+
Retailer 10
-
€361 EUR
View
B+
Retailer 11
-
€383 EUR
View
B+
Retailer 12
-
€432 EUR
View
B+
Retailer 13
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€496 EUR
View
B
Retailer 14
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€627 EUR
View
B
Retailer 15
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€636 EUR
View
B
Retailer 16
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€663 EUR
View
B
Retailer 17
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€668 EUR
View
B
Retailer 18
-
€675 EUR
View
Retailer 19
-
€916 EUR
View
Price last confirmed 8 days ago
Most Expensive
B
Reve Diamonds
831BFC78D · Nov 6
€997 EUR
$1,119 USD
View
19 more retailers have this diamond
Prices start from €158 EURSave up to €839 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
1.23ct Round
€158 EUR