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Radiant|Lab Grown|IGI

1.23ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG623483179

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG623483179

Diamond specifications and retailer prices

From €211 EUR
$237 USD
As of October 31, 2026
Save €1,010 EUR (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,221 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.23ct lab-grown radiant diamond

This 1.23ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG623483179 or 623483179. Listed at 16 retailers as of October 31, 2026, with prices from €211 to €1,221, a €1,010 spread on the same certified stone. Taylor and Hart lists it at €1,221. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623483179
Dimensions7.54 × 5.37 × 3.51 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.54 mm5.37 mm1.23 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623483179
Side View
Table 62.0%Crown 43°Girdle: Slightly ThickPavilion 33.8°Culet: NoneDepth 65.4%

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: Oct 31
Current: €427 EUR|Low: €151 EUR|High: €1,221 EUR|Avg: €601 EUR|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 31, 2026
Retailer 10€211 EUR
Retailer 9€402 EUR
Retailer 5€402 EUR
Retailer 11€407 EUR
Retailer 1€427 EUR
Retailer 4€433 EUR
Retailer 3€546 EUR
Retailer 6€573 EUR
Retailer 8€755 EUR
Retailer 7€940 EUR
Retailer 2€949 EUR
Taylor and Hart€1,221 EUR

39 data points across 12 retailers

16 retailers€211 EUR to €1,221 EUR

Retailer 1
-
€189 EUR
$212 USD
Price last confirmed 25 days ago
A
Retailer 2
-
€211 EUR
$237 USD
View
Final sale: no returns
Retailer 3
-
€219 EUR
$246 USD
View
Price last confirmed 36 days ago
Retailer 4
-
€234 EUR
$263 USD
View
Price last confirmed 30 days ago
A
Retailer 5
-
€402 EUR
$451 USD
View
A
Retailer 6
-
€402 EUR
ZAR 7,291 ZAR
View
A
Retailer 7
-
€407 EUR
$457 USD
View
A
Retailer 8
-
€427 EUR
View
A
Retailer 9
-
€433 EUR
£382 GBP
View
B+
Retailer 10
-
€573 EUR
A$988 AUD
View
B+
Retailer 11
-
€703 EUR
£621 GBP
View
Retailer 12
-
€753 EUR
$845 USD
View
Price last confirmed 33 days ago
B
Retailer 13
-
€755 EUR
$847 USD
View
B
Retailer 14
-
€940 EUR
£830 GBP
View
B
Retailer 15
-
€949 EUR
SGD 1,438 SGD
View
Most Expensive
B
Taylor and Hart
J5465LD · Oct 31
€1,221 EUR
$1,370 USD
View
15 more retailers have this diamond
Prices start from €211 EURSave up to €1,010 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 Radiant
€211 EUR