CaratHunter
Plans
Marquise|Lab Grown|IGI

1.23ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG845651268

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845651268

Diamond specifications and retailer prices

From $290 USD
£228 GBP
As of November 2, 2026
Save $550 USD (65%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $840 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.23ct lab-grown marquise diamond

This 1.23ct lab-grown marquise 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 LG845651268 or 845651268. Listed at 9 retailers as of November 2, 2026, with prices from $290 to $840, a $550 spread on the same certified stone. Brilliant Earth lists it at $840. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845651268
Dimensions10.64 × 5.61 × 3.59 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.64 mm5.61 mm1.23 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845651268
Side View
Table 61.0%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $840 USD|Low: $290 USD|High: $840 USD|Avg: $593 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 6$290 USD
Retailer 7$419 USD
Retailer 9$422 USD
Retailer 2$443 USD
Retailer 4$451 USD
Retailer 5$592 USD
Retailer 3$782 USD
Retailer 8$833 USD
Brilliant Earth$840 USD

4 data points across 9 retailers

9 retailers$290 USD to $840 USD

A
Cheapest Retailer
-
$290 USD
£228 GBP
A
Retailer 2
-
$419 USD
ZAR 6,763 ZAR
View
A
Retailer 3
-
$422 USD
View
A
Retailer 4
-
$443 USD
£349 GBP
View
A
Retailer 5
-
$451 USD
View
B+
Retailer 6
-
$592 USD
A$910 AUD
View
B+
Retailer 7
-
$782 USD
View
B
Retailer 8
-
$833 USD
View
Most Expensive
B
Brilliant Earth
22394845A · Nov 2
$840 USD
View
8 more retailers have this diamond
Prices start from $290 USDSave up to $550 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 Marquise
$290 USD