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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG817672940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817672940

Diamond specifications and retailer prices

From $209 USD
As of October 29, 2026
Save $1,801 USD (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,010 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817672940 or 817672940. Listed at 16 retailers as of October 29, 2026, with prices from $209 to $2,010, a $1,801 spread on the same certified stone. Do Amore Diamonds lists it at $2,010. 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 angle34.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817672940
Dimensions6.86 × 6.95 × 4.35 mm
L/W Ratio1.01
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
6.86 mm6.95 mm1.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817672940
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 41.3°Culet: NoneDepth 62.8%

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: $2,010 USD|Low: $209 USD|High: $2,010 USD|Avg: $746 USD
Do Amore Diamonds
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
October 29, 2026
Retailer 15$209 USD
Retailer 13$234 USD
Retailer 14$243 USD
Retailer 6$323 USD
Retailer 7$361 USD
Retailer 9$465 USD
Retailer 2$475 USD
Retailer 5$505 USD
Retailer 12$699 USD
Retailer 8$803 USD
Retailer 16$837 USD
Retailer 11$920 USD
Retailer 3$1,149 USD
Retailer 10$1,180 USD
Retailer 4$1,620 USD
Do Amore Diamonds$2,010 USD

6 data points across 16 retailers

16 retailers$209 USD to $2,010 USD

A
Cheapest Retailer
-
$209 USD
A
Retailer 2
-
$234 USD
View
Final sale: no returns
A
Retailer 3
-
$243 USD
View
A
Retailer 4
-
$323 USD
View
B+
Retailer 5
-
$361 USD
View
A
Retailer 6
-
$465 USD
£366 GBP
View
A
Retailer 7
-
$475 USD
€452 EUR
View
A
Retailer 8
-
$505 USD
View
A
Retailer 9
-
$699 USD
A$1,075 AUD
View
B+
Retailer 10
-
$803 USD
View
B+
Retailer 11
-
$837 USD
View
B+
Retailer 12
-
$920 USD
View
B+
Retailer 13
-
$1,149 USD
£905 GBP
View
B+
Retailer 14
-
$1,180 USD
View
B
Retailer 15
-
$1,620 USD
View
Most Expensive
B
Do Amore Diamonds
27-873C8725E · Oct 29
$2,010 USD
View
15 more retailers have this diamond
Prices start from $209 USDSave up to $1,801 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
$209 USD