Round|Lab Grown|IGI

1.28ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG811647116

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647116

Diamond specifications and retailer prices

From $407 USD
As of November 4, 2026
Save $199 USD (33%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,120 USD at MOH London · As of October 19, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811647116 or 811647116. Listed at 20 retailers as of October 30, 2026, with a 49% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647116
Dimensions7.02 × 6.98 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.02 mm6.98 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647116
Side View
Table 58.0%Crown 34.3°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

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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 4
Current: $1,120 USD|Low: $192 USD|High: $1,126 USD|Avg: $531 USD|+3.6%
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
October 30, 2026
Retailer 3$192 USD
Retailer 7$238 USD
Retailer 15$238 USD
Retailer 9$407 USD
Retailer 10$409 USD
Retailer 6$417 USD
Retailer 2$432 USD
Retailer 13$434 USD
Retailer 14$515 USD
Retailer 12$581 USD
Retailer 16$606 USD
Retailer 11$686 USD
Retailer 8$720 USD
Retailer 4$766 USD
Retailer 5$820 USD
MOH London$1,120 USD

36 data points across 16 retailers

20 retailers$407 USD to $606 USD

Retailer 1
-
$179 USD
Price last confirmed 35 days ago
Retailer 2
-
$192 USD
View
Price last confirmed 7 days ago
Retailer 3
-
$216 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$231 USD
View
Price last confirmed 34 days ago
Retailer 5
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$238 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$238 USD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$407 USD
View
Retailer 8
-
$409 USD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$417 USD
View
A
Retailer 10
-
$432 USD
View
A
Retailer 11
-
$434 USD
View
Retailer 12
-
$515 USD
View
Price last confirmed 15 days ago
Retailer 13
-
$581 USD
View
Price last confirmed 9 days ago
B
Retailer 14
-
$606 USD
View
Retailer 15
-
$686 USD
View
Price last confirmed 9 days ago
Retailer 16
-
$720 USD
View
Price last confirmed 7 days ago
Retailer 17
-
$743 USD
View
Price last confirmed 36 days ago
Retailer 18
-
$766 USD
View
Price last confirmed 9 days ago
Retailer 19
-
$820 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG811647116 · Oct 19
$1,120 USD
£882 GBP
View
Price last confirmed 17 days ago
19 more retailers have this diamond
Prices start from $407 USDSave up to $199 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
$407 USD