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Round|Lab Grown|IGI

1.15ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG757504778

Shape and cutting style on the report: Round brilliant

Certificate IGI LG757504778

Diamond specifications and retailer prices

From $369 USD
As of November 6, 2026
Save $619 USD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $988 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.15ct lab-grown round diamond

This 1.15ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG757504778 or 757504778. Listed at 7 retailers as of November 2, 2026, with prices from $369 to $988, a $619 spread on the same certified stone. MOH London lists it at $988. 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

1.15
Carat
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757504778
Dimensions6.74 × 6.72 × 4.16 mm
L/W Ratio1.00
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
6.74 mm6.72 mm1.15 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757504778
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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: Nov 6
Current: $988 USD|Low: $348 USD|High: $989 USD|Avg: $488 USD|+1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$360 USD
Retailer 2$369 USD
Retailer 6$377 USD
Retailer 4$430 USD
Retailer 3$440 USD
Retailer 5$458 USD
MOH London$988 USD

44 data points across 7 retailers

7 retailers$369 USD to $988 USD

Retailer 1
-
$360 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$369 USD
View
A
Retailer 3
-
$377 USD
View
B+
Retailer 4
-
$430 USD
View
B+
Retailer 5
-
$440 USD
View
B+
Retailer 6
-
$458 USD
View
Most Expensive
B
MOH London
LG757504778 · Nov 2
$988 USD
£778 GBP
View
6 more retailers have this diamond
Prices start from $369 USDSave up to $619 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
1.15ct Round
$369 USD