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Round|Lab Grown|IGI

1.28ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG816613634

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816613634

Diamond specifications and retailer prices

From $192 USD
As of November 5, 2026
Save $923 USD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,115 USD at MOH London · As of November 2, 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 LG816613634 or 816613634. Listed at 20 retailers as of November 2, 2026, with prices from $192 to $1,115, a $923 spread on the same certified stone. MOH London lists it at $1,115. 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 angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816613634
Dimensions7.02 × 6.98 × 4.22 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 LG816613634
Side View
Table 60.0%Crown 35.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.3%

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 5
Current: $1,115 USD|Low: $192 USD|High: $1,126 USD|Avg: $519 USD|+1.9%
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
November 5, 2026
Retailer 3$192 USD
Retailer 7$238 USD
Retailer 16$238 USD
Retailer 13$407 USD
Retailer 12$411 USD
Retailer 15$413 USD
Retailer 6$417 USD
Retailer 2$428 USD
Retailer 14$434 USD
Retailer 9$495 USD
Retailer 11$581 USD
Retailer 8$720 USD
Retailer 4$766 USD
Retailer 10$769 USD
Retailer 5$820 USD
MOH London$1,115 USD

38 data points across 16 retailers

20 retailers$192 USD to $1,115 USD

Retailer 1
-
$179 USD
Price last confirmed 35 days ago
A
Retailer 2
-
$192 USD
View
Retailer 3
-
$216 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$231 USD
View
Price last confirmed 34 days ago
Retailer 5
-
$238 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$238 USD
View
A
Retailer 7
-
$407 USD
View
A
Retailer 8
-
$411 USD
View
A
Retailer 9
-
$417 USD
View
A
Retailer 10
-
$428 USD
View
A
Retailer 11
-
$434 USD
View
B+
Retailer 12
-
$495 USD
View
B+
Retailer 13
-
$581 USD
View
B
Retailer 14
-
$613 USD
View
B
Retailer 15
-
$720 USD
View
Retailer 16
-
$743 USD
View
Price last confirmed 36 days ago
B
Retailer 17
-
$766 USD
View
B
Retailer 18
-
$769 USD
View
B
Retailer 19
-
$820 USD
View
Most Expensive
B
MOH London
LG816613634 · Nov 2
$1,115 USD
£878 GBP
View
19 more retailers have this diamond
Prices start from $192 USDSave up to $923 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
$192 USD