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Round|Lab Grown|IGI

1.20ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG487108268

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487108268

Diamond specifications and retailer prices

From $1,127 AUD
As of November 5, 2026
Save $3,771 AUD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,898 AUD at MOH London · As of November 3, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487108268 or 487108268. Listed at 12 retailers as of November 3, 2026, with prices from $1,127 to $4,898, a $3,771 spread on the same certified stone. MOH London lists it at $4,898. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487108268
Dimensions6.78 × 6.75 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.78 mm6.75 mm1.20 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487108268
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,898 AUD|Low: $1,081 AUD|High: $4,956 AUD|Avg: $2,091 AUD
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 6, 2026
Retailer 7$1,127 AUD
Retailer 13$1,226 AUD
Retailer 12$1,261 AUD
Retailer 8$1,271 AUD
Retailer 9$1,307 AUD
Retailer 11$1,307 AUD
Retailer 4$1,557 AUD
Retailer 5$2,028 AUD
Retailer 10$2,110 AUD
Retailer 2$2,164 AUD
Retailer 6$3,107 AUD
Retailer 3$3,674 AUD
MOH London$4,898 AUD

43 data points across 13 retailers

12 retailers$1,127 AUD to $4,898 AUD

A
Cheapest Retailer
-
$1,127 AUD
A
Retailer 2
-
$1,226 AUD
View
A
Retailer 3
-
$1,261 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,271 AUD
View
A
Retailer 5
-
$1,307 AUD
View
Retailer 6
-
$1,307 AUD
View
Price last confirmed 25 days ago
A
Retailer 7
-
$1,557 AUD
View
B+
Retailer 8
-
$2,110 AUD
View
B+
Retailer 9
-
$2,164 AUD
View
B
Retailer 10
-
$3,107 AUD
View
B
Retailer 11
-
$3,674 AUD
View
Most Expensive
B
MOH London
LG487108268 · Nov 3
$4,898 AUD
£2,700 GBP
View
11 more retailers have this diamond
Prices start from $1,127 AUDSave up to $3,771 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
1.20ct Round
$1,127 AUD