Round|Lab Grown|IGI

1.28ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800680138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800680138

Diamond specifications and retailer prices

From $461 USD
HK$3,600 HKD
As of October 28, 2026
Save $1,369 USD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,830 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800680138 or 800680138. Listed at 12 retailers as of October 28, 2026, with prices from $461 to $1,830, a $1,369 spread on the same certified stone. Brilliant Earth lists it at $1,830. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800680138
Dimensions7.09 × 7.06 × 4.20 mm
L/W Ratio1.00
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
7.09 mm7.06 mm1.28 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800680138
Side View
Table 57.0%Crown 33°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,830 USD|Low: $461 USD|High: $1,880 USD|Avg: $999 USD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 7$461 USD
Retailer 12$562 USD
Retailer 8$646 USD
Retailer 5$651 USD
Retailer 2$705 USD
Retailer 4$746 USD
Retailer 10$747 USD
Retailer 9$901 USD
Retailer 11$1,323 USD
Retailer 3$1,511 USD
Retailer 6$1,601 USD
Brilliant Earth$1,830 USD

43 data points across 12 retailers

12 retailers$461 USD to $1,830 USD

A
Cheapest Retailer
-
$461 USD
HK$3,600 HKD
A
Retailer 2
-
$562 USD
View
A
Retailer 3
-
$646 USD
View
A
Retailer 4
-
$651 USD
€620 EUR
View
A
Retailer 5
-
$705 USD
£555 GBP
View
A
Retailer 6
-
$746 USD
A$1,148 AUD
View
A
Retailer 7
-
$747 USD
View
B+
Retailer 8
-
$901 USD
View
B+
Retailer 9
-
$1,323 USD
View
B
Retailer 10
-
$1,511 USD
View
B+
Retailer 11
-
$1,601 USD
£1,261 GBP
View
Most Expensive
B
Brilliant Earth
21143557A · Oct 29
$1,830 USD
View
11 more retailers have this diamond
Prices start from $461 USDSave up to $1,369 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
$461 USD