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Princess|Lab Grown|IGI

1.21ct D SI1 Princess Lab Grown Diamond

EX • D/SI1 • IGI LG726537000

Shape and cutting style on the report: Princess cut

Certificate IGI LG726537000

Diamond specifications and retailer prices

From $277 AUD
As of November 6, 2026
Save $1,401 AUD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,678 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.21ct lab-grown princess diamond

This 1.21ct lab-grown princess 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 LG726537000 or 726537000. Listed at 19 retailers as of November 6, 2026, with prices from $277 to $1,678, a $1,401 spread on the same certified stone. Reve Diamonds lists it at $1,678. 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

1.21
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726537000
Dimensions5.76 × 5.74 × 4.25 mm
L/W Ratio1.00
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
5.76 mm5.74 mm1.21 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726537000
Side View
Table 69.0%Crown 46.5°Girdle: MediumPavilion 39.8°Culet: NoneDepth 74.0%

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: $620 AUD|Low: $274 AUD|High: $1,728 AUD|Avg: $822 AUD|+4.6%
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
Reve Diamonds
November 6, 2026
Retailer 4$277 AUD
Retailer 5$310 AUD
Retailer 13$321 AUD
Retailer 7$344 AUD
Retailer 16$344 AUD
Retailer 2$599 AUD
Retailer 1$620 AUD
Retailer 8$639 AUD
Retailer 12$656 AUD
Retailer 15$694 AUD
Retailer 14$907 AUD
Retailer 3$1,106 AUD
Retailer 9$1,109 AUD
Retailer 11$1,129 AUD
Retailer 6$1,181 AUD
Retailer 10$1,607 AUD
Reve Diamonds$1,678 AUD

45 data points across 17 retailers

19 retailers$277 AUD to $1,678 AUD

A
Cheapest Retailer
-
$277 AUD
A
Retailer 2
-
$310 AUD
View
Final sale: no returns
A
Retailer 3
-
$321 AUD
View
Retailer 4
-
$337 AUD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$344 AUD
View
Retailer 6
-
$344 AUD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$599 AUD
View
B+
Retailer 8
-
$620 AUD
View
B+
Retailer 9
-
$639 AUD
View
Retailer 10
-
$656 AUD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$694 AUD
View
Retailer 12
-
$907 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$937 AUD
View
B
Retailer 14
-
$1,106 AUD
View
B
Retailer 15
-
$1,109 AUD
View
B
Retailer 16
-
$1,129 AUD
View
B
Retailer 17
-
$1,181 AUD
View
B
Retailer 18
-
$1,607 AUD
View
Most Expensive
B
Reve Diamonds
A3692AA53 · Nov 6
$1,678 AUD
$1,175 USD
View
18 more retailers have this diamond
Prices start from $277 AUDSave up to $1,401 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
1.21ct Princess
$277 AUD