Round|Lab Grown|IGI

1.24ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG799670980

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799670980

Diamond specifications and retailer prices

From $170 USD
As of November 1, 2026
Save $817 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $987 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.24ct lab-grown round diamond

This 1.24ct 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 LG799670980 or 799670980. Listed at 12 retailers as of November 1, 2026, with prices from $170 to $987, a $817 spread on the same certified stone. MOH London lists it at $987. 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

1.24
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799670980
Dimensions6.82 × 6.78 × 4.28 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
6.82 mm6.78 mm1.24 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG799670980
Side View
Table 54.0%Crown 35.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.9%

Caratlytics Score

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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 1
Current: $987 USD|Low: $107 USD|High: $999 USD|Avg: $401 USD|-1.3%
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
November 4, 2026
Retailer 5$107 USD
Retailer 9$170 USD
Retailer 10$191 USD
Retailer 4$211 USD
Retailer 6$360 USD
Retailer 7$375 USD
Retailer 3$377 USD
Retailer 13$394 USD
Retailer 12$461 USD
Retailer 2$485 USD
Retailer 8$548 USD
Retailer 11$590 USD
MOH London$987 USD

36 data points across 13 retailers

12 retailers$170 USD to $987 USD

A
Cheapest Retailer
-
$170 USD
A
Retailer 2
-
$191 USD
View
Final sale: no returns
Retailer 3
-
$211 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$360 USD
View
A
Retailer 5
-
$375 USD
View
A
Retailer 6
-
$377 USD
View
B+
Retailer 7
-
$394 USD
View
B+
Retailer 8
-
$461 USD
View
B+
Retailer 9
-
$485 USD
View
B
Retailer 10
-
$548 USD
View
B+
Retailer 11
-
$590 USD
View
Most Expensive
B
MOH London
LG799670980 · Nov 2
$987 USD
£777 GBP
View
11 more retailers have this diamond
Prices start from $170 USDSave up to $817 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
1.24ct Round
$170 USD