CaratHunter
Plans
Asscher|Lab Grown|IGI

3.51ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG640447575

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG640447575

Diamond specifications and retailer prices

From $639 AUD
As of November 4, 2026
Save $2,114 AUD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,814 AUD at Rare Carat · As of September 28, 2026
View at Rare Carat

About this 3.51ct lab-grown asscher diamond

This 3.51ct lab-grown asscher 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 LG640447575 or 640447575. Listed at 16 retailers as of November 5, 2026, with a 331% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640447575
Dimensions8.44 × 8.22 × 5.27 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.44 mm8.22 mm3.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640447575
Side View
Table 63.0%Crown 36.1°Girdle: MediumPavilion 33.1°Culet: NoneDepth 64.1%

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 4
Current: $4,814 AUD|Low: $639 AUD|High: $4,814 AUD|Avg: $1,715 AUD
Rare Carat
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
November 6, 2026
Retailer 7$639 AUD
Retailer 11$639 AUD
Retailer 9$707 AUD
Retailer 14$707 AUD
Retailer 5$914 AUD
Retailer 3$950 AUD
Retailer 13$1,114 AUD
Retailer 2$1,149 AUD
Retailer 15$1,167 AUD
Retailer 12$1,981 AUD
Retailer 10$2,271 AUD
Retailer 6$2,323 AUD
Retailer 4$2,611 AUD
Retailer 8$2,753 AUD
Rare Carat$4,814 AUD

46 data points across 15 retailers

16 retailers$639 AUD to $2,753 AUD

A
Cheapest Retailer
-
$639 AUD
Final sale: no returns
A
Retailer 2
-
$639 AUD
View
Retailer 3
-
$707 AUD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$707 AUD
View
A
Retailer 5
-
$914 AUD
View
B+
Retailer 6
-
$950 AUD
View
Retailer 7
-
$1,114 AUD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$1,149 AUD
View
A
Retailer 9
-
$1,167 AUD
View
B+
Retailer 10
-
$1,981 AUD
View
B+
Retailer 11
-
$2,248 AUD
View
B+
Retailer 12
-
$2,271 AUD
View
B+
Retailer 13
-
$2,323 AUD
View
B+
Retailer 14
-
$2,611 AUD
View
B+
Retailer 15
-
$2,753 AUD
View
Most Expensive
Rare Carat
ST-26414_l_640447575 · Sep 28
$4,814 AUD
$3,370 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from $639 AUDSave up to $2,114 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
3.51ct Asscher
$639 AUD