Round|Lab Grown|IGI

1.26ct D IF Round Lab Grown Diamond

EX • D/IF • IGI LG818663684

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818663684

Diamond specifications and retailer prices

From $368 USD
As of November 5, 2026
Save $1,592 USD (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,320 USD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818663684 or 818663684. Listed at 23 retailers as of November 5, 2026, with a 433% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.26
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663684
Dimensions6.90 × 6.87 × 4.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.90 mm6.87 mm1.26 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663684
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Nov 5
Current: $1,960 USD|Low: $353 USD|High: $2,130 USD|Avg: $928 USD|-8.0%
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
November 6, 2026
Retailer 5$368 USD
Retailer 6$412 USD
Retailer 8$456 USD
Retailer 9$456 USD
Retailer 3$605 USD
Retailer 15$610 USD
Retailer 13$702 USD
Retailer 4$726 USD
Retailer 16$746 USD
Retailer 14$785 USD
Retailer 2$812 USD
Retailer 17$1,068 USD
Retailer 11$1,112 USD
Retailer 12$1,265 USD
Retailer 7$1,728 USD
Retailer 10$1,775 USD
Brilliant Earth$1,960 USD

40 data points across 17 retailers

23 retailers$368 USD to $1,960 USD

A
Cheapest Retailer
-
$368 USD
A
Retailer 2
-
$412 USD
View
Final sale: no returns
A
Retailer 3
-
$426 USD
View
A
Retailer 4
-
$456 USD
View
Retailer 5
-
$456 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$605 USD
View
A
Retailer 7
-
$610 USD
View
A
Retailer 8
-
$702 USD
View
A
Retailer 9
-
$746 USD
View
A
Retailer 10
-
$785 USD
View
B+
Retailer 11
-
$802 USD
View
A
Retailer 12
-
$812 USD
View
B+
Retailer 13
-
$986 USD
View
B+
Retailer 14
-
$1,068 USD
View
B+
Retailer 15
-
$1,112 USD
View
B+
Retailer 16
-
$1,265 USD
View
B
Retailer 17
-
$1,465 USD
View
B
Retailer 18
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$1,504 USD
View
B
Retailer 19
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$1,655 USD
View
B
Retailer 20
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$1,728 USD
View
B
Retailer 21
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$1,775 USD
View
B
Retailer 22
-
$1,960 USD
View
Most Expensive
Brilliant Earth
21035033A · Sep 28
$2,320 USD
View
Price last confirmed 38 days ago
22 more retailers have this diamond
Prices start from $368 USDSave up to $1,592 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
1.26ct Round
$368 USD