Oval|Lab Grown|IGI

1.28ct F IF Oval Lab Grown Diamond

EX • F/IF • IGI LG812620275

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG812620275

Diamond specifications and retailer prices

From $256 USD
As of November 1, 2026
Save $1,594 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,850 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval 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 LG812620275 or 812620275. Listed at 22 retailers as of November 1, 2026, with prices from $256 to $1,850, a $1,594 spread on the same certified stone. Brilliant Earth lists it at $1,850. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620275
Dimensions8.89 × 6.12 × 3.77 mm
L/W Ratio1.45
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.89 mm6.12 mm1.28 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620275
Side View
Table 62.0%Crown 35.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,850 USD|Low: $256 USD|High: $1,900 USD|Avg: $797 USD|-2.6%
Brilliant Earth
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 2, 2026
Retailer 4$256 USD
Retailer 6$285 USD
Retailer 16$402 USD
Retailer 10$475 USD
Retailer 9$492 USD
Retailer 2$533 USD
Retailer 3$603 USD
Retailer 5$619 USD
Retailer 12$695 USD
Retailer 11$740 USD
Retailer 15$885 USD
Retailer 7$968 USD
Retailer 13$1,143 USD
Retailer 8$1,288 USD
Retailer 14$1,310 USD
Brilliant Earth$1,850 USD

35 data points across 16 retailers

22 retailers$256 USD to $1,850 USD

Retailer 1
-
$230 USD
Price last confirmed 40 days ago
Retailer 2
-
$230 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$256 USD
View
Final sale: no returns
Retailer 4
-
$266 USD
View
Price last confirmed 38 days ago
Retailer 5
-
$281 USD
View
Price last confirmed 38 days ago
Retailer 6
-
$285 USD
View
Price last confirmed 21 days ago
Retailer 7
-
$285 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$402 USD
View
A
Retailer 9
-
$475 USD
€452 EUR
View
A
Retailer 10
-
$492 USD
ZAR 7,943 ZAR
View
A
Retailer 11
-
$533 USD
£419 GBP
View
A
Retailer 12
-
$603 USD
View
A
Retailer 13
-
$619 USD
View
A
Retailer 14
-
$695 USD
A$1,069 AUD
View
A
Retailer 15
-
$740 USD
View
B+
Retailer 16
-
$885 USD
View
Retailer 17
-
$915 USD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
$968 USD
View
B+
Retailer 19
-
$1,143 USD
£900 GBP
View
B+
Retailer 20
-
$1,288 USD
View
Retailer 21
-
$1,310 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20677511A · Nov 2
$1,850 USD
View
21 more retailers have this diamond
Prices start from $256 USDSave up to $1,594 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 Oval
$256 USD