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Oval|Lab Grown|IGI

1.28ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG735568337

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG735568337

Diamond specifications and retailer prices

From $290 USD
As of October 29, 2026
Save $1,710 USD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,000 USD at Brilliant Earth · As of October 29, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG735568337 or 735568337. Listed at 13 retailers as of October 29, 2026, with prices from $290 to $2,000, a $1,710 spread on the same certified stone. Brilliant Earth lists it at $2,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735568337
Dimensions6.07 × 6.07 × 3.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.07 mm6.07 mm1.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735568337
Side View
Table 60.0%Crown 35.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.3%

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: Oct 29
Current: $2,000 USD|Low: $255 USD|High: $3,100 USD|Avg: $866 USD|-35.5%
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
Retailer 17
Retailer 18
October 30, 2026
Retailer 12$290 USD
Retailer 2$299 USD
Retailer 15$398 USD
Retailer 5$462 USD
Retailer 17$485 USD
Retailer 11$526 USD
Retailer 14$601 USD
Retailer 4$613 USD
Retailer 10$625 USD
Retailer 3$688 USD
Retailer 6$828 USD
Retailer 18$860 USD
Retailer 8$960 USD
Retailer 7$1,097 USD
Retailer 13$1,138 USD
Retailer 16$1,282 USD
Retailer 9$1,790 USD
Brilliant Earth$2,000 USD

5 data points across 18 retailers

13 retailers$290 USD to $2,000 USD

A
Cheapest Retailer
-
$290 USD
Final sale: no returns
A
Retailer 2
-
$299 USD
£236 GBP
View
A
Retailer 3
-
$398 USD
View
A
Retailer 4
-
$485 USD
ZAR 7,835 ZAR
View
A
Retailer 5
-
$526 USD
£414 GBP
View
A
Retailer 6
-
$601 USD
View
A
Retailer 7
-
$613 USD
View
B+
Retailer 8
-
$688 USD
A$1,059 AUD
View
B+
Retailer 9
-
$860 USD
View
B+
Retailer 10
-
$960 USD
View
B
Retailer 11
-
$1,138 USD
£896 GBP
View
B
Retailer 12
-
$1,282 USD
View
Most Expensive
B
Brilliant Earth
17527358A · Oct 29
$2,000 USD
View
12 more retailers have this diamond
Prices start from $290 USDSave up to $1,710 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
$290 USD