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Round|Lab Grown|IGI

1.25ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG784643984

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784643984

Diamond specifications and retailer prices

From $244 AUD
As of November 1, 2026
Save $1,176 AUD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,421 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG784643984 or 784643984. Listed at 11 retailers as of November 1, 2026, with prices from $244 to $1,421, a $1,176 spread on the same certified stone. MOH London lists it at $1,421. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.25
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784643984
Dimensions6.84 × 6.76 × 4.27 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
6.84 mm6.76 mm1.25 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG784643984
Side View
Table 59.0%Crown 38.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.7%

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: $1,421 AUD|Low: $147 AUD|High: $1,437 AUD|Avg: $553 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 4$147 AUD
Retailer 8$244 AUD
Retailer 9$274 AUD
Retailer 3$304 AUD
Retailer 5$517 AUD
Retailer 6$540 AUD
Retailer 12$541 AUD
Retailer 11$571 AUD
Retailer 10$661 AUD
Retailer 2$693 AUD
Retailer 7$790 AUD
MOH London$1,421 AUD

34 data points across 12 retailers

11 retailers$244 AUD to $1,421 AUD

A
Cheapest Retailer
-
$244 AUD
A
Retailer 2
-
$274 AUD
View
Final sale: no returns
Retailer 3
-
$304 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$517 AUD
View
B+
Retailer 5
-
$540 AUD
View
B+
Retailer 6
-
$541 AUD
View
B+
Retailer 7
-
$571 AUD
View
B+
Retailer 8
-
$661 AUD
View
B+
Retailer 9
-
$693 AUD
View
B
Retailer 10
-
$790 AUD
View
Most Expensive
B
MOH London
LG784643984 · Nov 2
$1,421 AUD
£783 GBP
View
10 more retailers have this diamond
Prices start from $244 AUDSave up to $1,176 AUD

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
1.25ct Round
$244 AUD