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Round|Lab Grown|IGI

1.26ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG683543026

Shape and cutting style on the report: Round brilliant

Certificate IGI LG683543026

Diamond specifications and retailer prices

From $287 AUD
As of November 5, 2026
Save $1,422 AUD (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,709 AUD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG683543026 or 683543026. Listed at 22 retailers as of November 4, 2026, with prices from $287 to $1,709, a $1,422 spread on the same certified stone. Reve Diamonds lists it at $1,709. 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

1.26
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683543026
Dimensions6.95 × 6.89 × 4.27 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
6.95 mm6.89 mm1.26 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683543026
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 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 5
Current: $644 AUD|Low: $284 AUD|High: $1,709 AUD|Avg: $757 AUD|+4.4%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Reve Diamonds
November 6, 2026
Retailer 7$287 AUD
Retailer 15$320 AUD
Retailer 16$333 AUD
Retailer 3$356 AUD
Retailer 4$356 AUD
Retailer 17$586 AUD
Retailer 5$619 AUD
Retailer 1$644 AUD
Retailer 9$650 AUD
Retailer 13$677 AUD
Retailer 10$689 AUD
Retailer 2$709 AUD
Retailer 14$750 AUD
Retailer 8$1,144 AUD
Retailer 12$1,149 AUD
Retailer 6$1,220 AUD
Retailer 11$1,660 AUD
Reve Diamonds$1,709 AUD

33 data points across 18 retailers

22 retailers$287 AUD to $1,709 AUD

A
Cheapest Retailer
-
$287 AUD
A
Retailer 2
-
$320 AUD
View
Final sale: no returns
A
Retailer 3
-
$333 AUD
View
A
Retailer 4
-
$356 AUD
View
Retailer 5
-
$356 AUD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$586 AUD
View
B+
Retailer 7
-
$619 AUD
View
B+
Retailer 8
-
$644 AUD
View
B+
Retailer 9
-
$650 AUD
View
B+
Retailer 10
-
$677 AUD
View
B+
Retailer 11
-
$689 AUD
View
B+
Retailer 12
-
$709 AUD
View
B+
Retailer 13
-
$750 AUD
View
B+
Retailer 14
-
$886 AUD
View
B+
Retailer 15
-
$886 AUD
View
B+
Retailer 16
-
$976 AUD
View
Retailer 17
-
$1,134 AUD
View
Price last confirmed 46 days ago
B
Retailer 18
-
$1,144 AUD
View
B
Retailer 19
-
$1,149 AUD
View
B
Retailer 20
-
$1,220 AUD
View
B
Retailer 21
-
$1,660 AUD
View
Most Expensive
B
Reve Diamonds
AAF9B4E32 · Nov 4
$1,709 AUD
$1,197 USD
View
21 more retailers have this diamond
Prices start from $287 AUDSave up to $1,422 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
1.26ct Round
$287 AUD