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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 $345 NZD
As of November 6, 2026
Save $1,745 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,090 NZD 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 $345 to $2,090, a $1,745 spread on the same certified stone. Reve Diamonds lists it at $2,090. 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: $772 NZD|Low: $342 NZD|High: $2,152 NZD|Avg: $1,023 NZD|+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$345 NZD
Retailer 5$386 NZD
Retailer 13$400 NZD
Retailer 7$429 NZD
Retailer 16$429 NZD
Retailer 2$745 NZD
Retailer 1$772 NZD
Retailer 8$795 NZD
Retailer 12$817 NZD
Retailer 15$865 NZD
Retailer 14$1,130 NZD
Retailer 3$1,377 NZD
Retailer 9$1,380 NZD
Retailer 11$1,405 NZD
Retailer 6$1,471 NZD
Retailer 10$2,001 NZD
Reve Diamonds$2,090 NZD

45 data points across 17 retailers

19 retailers$345 NZD to $2,090 NZD

A
Cheapest Retailer
-
$345 NZD
A
Retailer 2
-
$386 NZD
View
Final sale: no returns
A
Retailer 3
-
$400 NZD
View
Retailer 4
-
$420 NZD
View
Price last confirmed 45 days ago
A
Retailer 5
-
$429 NZD
View
Retailer 6
-
$429 NZD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$745 NZD
View
B+
Retailer 8
-
$772 NZD
View
B+
Retailer 9
-
$795 NZD
View
Retailer 10
-
$817 NZD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$865 NZD
View
Retailer 12
-
$1,130 NZD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$1,167 NZD
View
B
Retailer 14
-
$1,377 NZD
View
B
Retailer 15
-
$1,380 NZD
View
B
Retailer 16
-
$1,405 NZD
View
B
Retailer 17
-
$1,471 NZD
View
B
Retailer 18
-
$2,001 NZD
View
Most Expensive
B
Reve Diamonds
A3692AA53 · Nov 6
$2,090 NZD
$1,175 USD
View
18 more retailers have this diamond
Prices start from $345 NZDSave up to $1,745 NZD

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
$345 NZD