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Round|Lab Grown|IGI

1.23ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG741564265

Shape and cutting style on the report: Round brilliant

Certificate IGI LG741564265

Diamond specifications and retailer prices

From $152 USD
As of November 1, 2026
Save $731 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $883 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct 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 LG741564265 or 741564265. Listed at 12 retailers as of November 1, 2026, with prices from $152 to $883, a $731 spread on the same certified stone. MOH London lists it at $883. 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

1.23
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741564265
Dimensions6.88 × 6.80 × 4.19 mm
L/W Ratio1.01
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
6.88 mm6.80 mm1.23 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741564265
Side View
Table 62.0%Crown 37.8°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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 1
Current: $883 USD|Low: $152 USD|High: $939 USD|Avg: $427 USD|-6.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$152 USD
Retailer 10$170 USD
Retailer 4$195 USD
Retailer 7$328 USD
Retailer 2$341 USD
Retailer 3$346 USD
Retailer 12$376 USD
Retailer 11$441 USD
Retailer 5$445 USD
Retailer 6$506 USD
Retailer 8$550 USD
MOH London$883 USD

37 data points across 12 retailers

12 retailers$152 USD to $883 USD

A
Cheapest Retailer
-
$152 USD
A
Retailer 2
-
$170 USD
View
Final sale: no returns
Retailer 3
-
$195 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$328 USD
View
B+
Retailer 5
-
$341 USD
View
B+
Retailer 6
-
$346 USD
View
A
Retailer 7
-
$376 USD
View
B+
Retailer 8
-
$441 USD
View
B+
Retailer 9
-
$445 USD
View
B
Retailer 10
-
$506 USD
View
B
Retailer 11
-
$550 USD
View
Most Expensive
B
MOH London
LG741564265 · Nov 1
$883 USD
£695 GBP
View
11 more retailers have this diamond
Prices start from $152 USDSave up to $731 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
1.23ct Round
$152 USD