CaratHunter
Plans
Round|Lab Grown|IGI

3.05ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG815653250

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815653250

Diamond specifications and retailer prices

From $648 NZD
As of November 5, 2026
Save $3,978 NZD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,625 NZD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.05ct lab-grown round diamond

This 3.05ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG815653250 or 815653250. Listed at 20 retailers as of November 5, 2026, with prices from $648 to $4,625, a $3,978 spread on the same certified stone. Brilliant Earth lists it at $4,625. 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

3.05
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815653250
Dimensions9.43 × 9.37 × 5.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.43 mm9.37 mm3.05 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815653250
Side View
Table 61.0%Crown 32.8°Girdle: THN-MEDPavilion 41.6°Culet: NoneDepth 60.5%

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: $4,625 NZD|Low: $623 NZD|High: $4,625 NZD|Avg: $1,809 NZD
Brilliant Earth
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
November 5, 2026
Retailer 15$648 NZD
Retailer 8$751 NZD
Retailer 4$802 NZD
Retailer 16$802 NZD
Retailer 10$1,067 NZD
Retailer 14$1,082 NZD
Retailer 11$1,263 NZD
Retailer 7$1,364 NZD
Retailer 9$1,430 NZD
Retailer 12$1,886 NZD
Retailer 6$1,941 NZD
Retailer 3$2,581 NZD
Retailer 5$2,606 NZD
Retailer 2$3,127 NZD
Retailer 13$3,593 NZD
Brilliant Earth$4,625 NZD

43 data points across 16 retailers

20 retailers$648 NZD to $4,625 NZD

A
Cheapest Retailer
-
$648 NZD
A
Retailer 2
-
$724 NZD
View
Final sale: no returns
A
Retailer 3
-
$751 NZD
View
Retailer 4
-
$802 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$802 NZD
View
A
Retailer 6
-
$911 NZD
View
A
Retailer 7
-
$1,067 NZD
View
B+
Retailer 8
-
$1,082 NZD
View
A
Retailer 9
-
$1,263 NZD
View
A
Retailer 10
-
$1,364 NZD
View
A
Retailer 11
-
$1,430 NZD
View
B+
Retailer 12
-
$1,886 NZD
View
B+
Retailer 13
-
$1,941 NZD
View
B+
Retailer 14
-
$2,581 NZD
View
B+
Retailer 15
-
$2,606 NZD
View
B+
Retailer 16
-
$2,652 NZD
View
B
Retailer 17
-
$3,054 NZD
View
B
Retailer 18
-
$3,127 NZD
View
Retailer 19
-
$3,593 NZD
View
Price last confirmed 19 days ago
Most Expensive
B
Brilliant Earth
20763709A · Nov 5
$4,625 NZD
$2,600 USD
View
19 more retailers have this diamond
Prices start from $648 NZDSave up to $3,978 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
3.05ct Round
$648 NZD