Round|Lab Grown|IGI

1.28ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG850688192

Shape and cutting style on the report: Round brilliant

Certificate IGI LG850688192

Diamond specifications and retailer prices

From $268 USD
As of November 1, 2026
Save $1,062 USD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,330 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG850688192 or 850688192. Listed at 18 retailers as of November 1, 2026, with prices from $268 to $1,330, a $1,062 spread on the same certified stone. MOH London lists it at $1,330. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850688192
Dimensions6.96 × 6.99 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.96 mm6.99 mm1.28 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850688192
Side View
Table 58.0%Crown 35.4°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 60.9%

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: $1,330 USD|Low: $268 USD|High: $1,337 USD|Avg: $721 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 4$268 USD
Retailer 16$310 USD
Retailer 13$332 USD
Retailer 7$371 USD
Retailer 9$448 USD
Retailer 3$490 USD
Retailer 11$536 USD
Retailer 5$537 USD
Retailer 6$585 USD
Retailer 12$629 USD
Retailer 17$713 USD
Retailer 15$1,020 USD
Retailer 14$1,067 USD
Retailer 10$1,087 USD
Retailer 8$1,118 USD
Retailer 2$1,195 USD
Retailer 18$1,195 USD
MOH London$1,330 USD

5 data points across 18 retailers

18 retailers$268 USD to $1,330 USD

A
Cheapest Retailer
-
$268 USD
A
Retailer 2
-
$310 USD
View
A
Retailer 3
-
$332 USD
View
A
Retailer 4
-
$371 USD
HK$2,900 HKD
View
A
Retailer 5
-
$448 USD
View
A
Retailer 6
-
$490 USD
View
A
Retailer 7
-
$536 USD
£422 GBP
View
A
Retailer 8
-
$537 USD
€511 EUR
View
A
Retailer 9
-
$585 USD
View
A
Retailer 10
-
$629 USD
£496 GBP
View
B+
Retailer 11
-
$713 USD
View
B
Retailer 12
-
$1,020 USD
View
B
Retailer 13
-
$1,067 USD
View
B
Retailer 14
-
$1,087 USD
SGD 1,469 SGD
View
B
Retailer 15
-
$1,118 USD
View
B
Retailer 16
-
$1,195 USD
View
B
Retailer 17
-
$1,195 USD
View
Most Expensive
B
MOH London
LG850688192 · Nov 1
$1,330 USD
£1,047 GBP
View
17 more retailers have this diamond
Prices start from $268 USDSave up to $1,062 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
1.28ct Round
$268 USD