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Heart|Lab Grown|GIA

3.21ct G SI1 Heart Lab Grown Diamond

EX • G/SI1 • GIA 1459199399

Certificate GIA 1459199399

Diamond specifications and retailer prices

From $1,493 AUD
As of November 6, 2026
Save $5,621 AUD (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,605 AUD at Mervis Diamond Importers · As of November 6, 2026
View at Mervis Diamond Importers

About this 3.21ct lab-grown heart diamond

This 3.21ct lab-grown heart sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1459199399. Listed at 20 retailers as of November 6, 2026, with a 376% 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

3.21
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 1459199399
Dimensions9.39 × 8.14 × 5.51 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Feather
Top View
9.39 mm8.14 mm3.21 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1459199399
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

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 6
Current: $12,605 AUD|Low: $1,457 AUD|High: $12,605 AUD|Avg: $3,946 AUD|+139.1%
Mervis Diamond Importers
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
Retailer 18
Retailer 19
November 6, 2026
Retailer 2$1,493 AUD
Retailer 5$1,650 AUD
Retailer 17$1,703 AUD
Retailer 3$1,719 AUD
Retailer 16$2,208 AUD
Retailer 6$2,387 AUD
Retailer 14$2,441 AUD
Retailer 12$2,525 AUD
Retailer 7$2,803 AUD
Retailer 4$4,069 AUD
Retailer 18$4,194 AUD
Retailer 10$4,343 AUD
Retailer 8$4,344 AUD
Retailer 13$4,931 AUD
Retailer 15$5,637 AUD
Retailer 11$5,934 AUD
Retailer 19$7,114 AUD
Retailer 9$10,261 AUD
Mervis Diamond Importers$12,605 AUD

31 data points across 19 retailers

20 retailers$1,493 AUD to $7,114 AUD

Retailer 1
-
$1,473 AUD
Price last confirmed 25 days ago
A
Retailer 2
-
$1,493 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,650 AUD
View
A
Retailer 4
-
$1,703 AUD
View
A
Retailer 5
-
$1,719 AUD
View
Retailer 6
-
$2,208 AUD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
$2,387 AUD
View
B+
Retailer 8
-
$2,441 AUD
View
B+
Retailer 9
-
$2,525 AUD
View
B+
Retailer 10
-
$2,803 AUD
View
B
Retailer 11
-
$4,069 AUD
View
B
Retailer 12
-
$4,194 AUD
View
B
Retailer 13
-
$4,343 AUD
View
B
Retailer 14
-
$4,344 AUD
View
B
Retailer 15
-
$4,931 AUD
View
B
Retailer 16
-
$5,637 AUD
View
B
Retailer 17
-
$5,934 AUD
View
B
Retailer 18
-
$7,114 AUD
View
Retailer 19
-
$10,261 AUD
View
Price under review
Most Expensive
Mervis Diamond Importers
1958943385 · Nov 6
$12,605 AUD
$8,661 USD
View
Price under review
19 more retailers have this diamond
Prices start from $1,493 AUDSave up to $5,621 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
3.21ct Heart
$1,493 AUD