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Round|Lab Grown|IGI

1.28ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG825665171

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825665171

Diamond specifications and retailer prices

From $270 USD
As of October 29, 2026
Save $1,560 USD (85%) vs most expensive(unlock to see where)
19 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 LG825665171 or 825665171. Listed at 19 retailers as of October 29, 2026, with prices from $270 to $1,830, a $1,560 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 angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825665171
Dimensions6.94 × 6.92 × 4.32 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
6.94 mm6.92 mm1.28 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825665171
Side View
Table 56.0%Crown 35.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A+
Exceptional
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: $1,830 USD|Low: $303 USD|High: $1,830 USD|Avg: $848 USD
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
October 29, 2026
Retailer 6$303 USD
Retailer 3$313 USD
Retailer 11$495 USD
Retailer 9$551 USD
Retailer 4$555 USD
Retailer 10$576 USD
Retailer 2$585 USD
Retailer 5$729 USD
Retailer 15$1,029 USD
Retailer 14$1,076 USD
Retailer 7$1,128 USD
Retailer 13$1,181 USD
Retailer 8$1,350 USD
Retailer 12$1,595 USD
Brilliant Earth$1,830 USD

39 data points across 15 retailers

19 retailers$270 USD to $1,830 USD

A+
Cheapest Retailer
-
$270 USD
A
Retailer 2
-
$303 USD
View
Final sale: no returns
A
Retailer 3
-
$313 USD
View
A
Retailer 4
-
$335 USD
View
A
Retailer 5
-
$335 USD
View
A
Retailer 6
-
$495 USD
View
A
Retailer 7
-
$551 USD
€525 EUR
View
A
Retailer 8
-
$555 USD
View
A
Retailer 9
-
$576 USD
ZAR 9,301 ZAR
View
A
Retailer 10
-
$585 USD
£461 GBP
View
A
Retailer 11
-
$729 USD
View
B+
Retailer 12
-
$1,029 USD
View
B+
Retailer 13
-
$1,076 USD
SGD 1,454 SGD
View
B+
Retailer 14
-
$1,077 USD
View
B+
Retailer 15
-
$1,128 USD
View
B+
Retailer 16
-
$1,181 USD
View
B+
Retailer 17
-
$1,350 USD
£1,063 GBP
View
B+
Retailer 18
-
$1,595 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21433907A · Oct 29
$1,830 USD
View
18 more retailers have this diamond
Prices start from $270 USDSave up to $1,560 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
$270 USD