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Round|Lab Grown|IGI

1.20ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG760544137

Shape and cutting style on the report: Round brilliant

Certificate IGI LG760544137

Diamond specifications and retailer prices

From $165 USD
As of October 29, 2026
Save $795 USD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $960 USD at MOH London · As of October 29, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG760544137 or 760544137. Listed at 16 retailers as of October 29, 2026, with prices from $165 to $960, a $795 spread on the same certified stone. MOH London lists it at $960. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG760544137
Dimensions6.72 × 6.67 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.72 mm6.67 mm1.20 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG760544137
Side View
Table 60.0%Crown 36.3°Girdle: MED-STKPavilion 41°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: $960 USD|Low: $157 USD|High: $983 USD|Avg: $390 USD|-2.3%
MOH London
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
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Retailer 16
October 30, 2026
Retailer 13$165 USD
Retailer 14$185 USD
Retailer 4$191 USD
Retailer 7$204 USD
Retailer 15$204 USD
Retailer 10$353 USD
Retailer 9$361 USD
Retailer 5$368 USD
Retailer 6$371 USD
Retailer 2$405 USD
Retailer 16$454 USD
Retailer 11$470 USD
Retailer 12$524 USD
Retailer 8$570 USD
Retailer 3$657 USD
MOH London$960 USD

34 data points across 16 retailers

16 retailers$165 USD to $960 USD

A
Cheapest Retailer
-
$165 USD
A
Retailer 2
-
$185 USD
View
Final sale: no returns
A
Retailer 3
-
$191 USD
View
A
Retailer 4
-
$204 USD
View
A
Retailer 5
-
$204 USD
View
A
Retailer 6
-
$353 USD
€336 EUR
View
A
Retailer 7
-
$361 USD
£284 GBP
View
A
Retailer 8
-
$368 USD
View
A
Retailer 9
-
$371 USD
View
A
Retailer 10
-
$405 USD
£319 GBP
View
B+
Retailer 11
-
$454 USD
View
Retailer 12
-
$470 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$524 USD
View
B+
Retailer 14
-
$570 USD
View
B
Retailer 15
-
$657 USD
View
Most Expensive
B
MOH London
LG760544137 · Oct 29
$960 USD
£756 GBP
View
15 more retailers have this diamond
Prices start from $165 USDSave up to $795 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
$165 USD