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Round|Lab Grown|IGI

1.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG837615667

Shape and cutting style on the report: Round brilliant

Certificate IGI LG837615667

Diamond specifications and retailer prices

From $234 USD
As of October 29, 2026
Save $1,246 USD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,480 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG837615667 or 837615667. Listed at 20 retailers as of October 29, 2026, with prices from $234 to $1,480, a $1,246 spread on the same certified stone. Brilliant Earth lists it at $1,480. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837615667
Dimensions6.92 × 6.87 × 4.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
6.92 mm6.87 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837615667
Side View
Table 60.0%Crown 33.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 59.8%

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: $1,480 USD|Low: $234 USD|High: $1,480 USD|Avg: $648 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 10$234 USD
Retailer 14$265 USD
Retailer 20$274 USD
Retailer 7$290 USD
Retailer 15$293 USD
Retailer 17$402 USD
Retailer 3$462 USD
Retailer 2$492 USD
Retailer 5$499 USD
Retailer 8$530 USD
Retailer 16$548 USD
Retailer 12$695 USD
Retailer 6$709 USD
Retailer 18$733 USD
Retailer 19$942 USD
Retailer 13$994 USD
Retailer 4$1,170 USD
Retailer 9$1,303 USD
Retailer 11$1,335 USD
Brilliant Earth$1,480 USD

22 data points across 20 retailers

20 retailers$234 USD to $1,480 USD

A+
Cheapest Retailer
-
$234 USD
A
Retailer 2
-
$265 USD
View
Final sale: no returns
A
Retailer 3
-
$274 USD
View
A
Retailer 4
-
$290 USD
View
A
Retailer 5
-
$293 USD
View
A
Retailer 6
-
$402 USD
View
A
Retailer 7
-
$462 USD
£364 GBP
View
A
Retailer 8
-
$492 USD
€469 EUR
View
A
Retailer 9
-
$499 USD
ZAR 8,059 ZAR
View
A
Retailer 10
-
$530 USD
View
A
Retailer 11
-
$548 USD
£431 GBP
View
B+
Retailer 12
-
$695 USD
View
B+
Retailer 13
-
$709 USD
A$1,090 AUD
View
B+
Retailer 14
-
$733 USD
View
B+
Retailer 15
-
$942 USD
View
B+
Retailer 16
-
$994 USD
View
B+
Retailer 17
-
$1,170 USD
£921 GBP
View
B+
Retailer 18
-
$1,303 USD
View
Retailer 19
-
$1,335 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21690652A · Oct 30
$1,480 USD
View
19 more retailers have this diamond
Prices start from $234 USDSave up to $1,246 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+
1.20ct Round
$234 USD