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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 $1,851 NZD
As of November 6, 2026
Save $6,967 NZD (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $15,624 NZD 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: $15,624 NZD|Low: $1,806 NZD|High: $15,624 NZD|Avg: $4,891 NZD|+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$1,851 NZD
Retailer 5$2,046 NZD
Retailer 17$2,111 NZD
Retailer 3$2,130 NZD
Retailer 16$2,737 NZD
Retailer 6$2,958 NZD
Retailer 14$3,025 NZD
Retailer 12$3,130 NZD
Retailer 7$3,474 NZD
Retailer 4$5,044 NZD
Retailer 18$5,199 NZD
Retailer 10$5,383 NZD
Retailer 8$5,385 NZD
Retailer 13$6,112 NZD
Retailer 15$6,987 NZD
Retailer 11$7,355 NZD
Retailer 19$8,817 NZD
Retailer 9$12,717 NZD
Mervis Diamond Importers$15,624 NZD

31 data points across 19 retailers

20 retailers$1,851 NZD to $8,817 NZD

Retailer 1
-
$1,826 NZD
Price last confirmed 25 days ago
A
Retailer 2
-
$1,851 NZD
View
Final sale: no returns
A
Retailer 3
-
$2,046 NZD
View
A
Retailer 4
-
$2,111 NZD
View
A
Retailer 5
-
$2,130 NZD
View
Retailer 6
-
$2,737 NZD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
$2,958 NZD
View
B+
Retailer 8
-
$3,025 NZD
View
B+
Retailer 9
-
$3,130 NZD
View
B+
Retailer 10
-
$3,474 NZD
View
B
Retailer 11
-
$5,044 NZD
View
B
Retailer 12
-
$5,199 NZD
View
B
Retailer 13
-
$5,383 NZD
View
B
Retailer 14
-
$5,385 NZD
View
B
Retailer 15
-
$6,112 NZD
View
B
Retailer 16
-
$6,987 NZD
View
B
Retailer 17
-
$7,355 NZD
View
B
Retailer 18
-
$8,817 NZD
View
Retailer 19
-
$12,717 NZD
View
Price under review
Most Expensive
Mervis Diamond Importers
1958943385 · Nov 6
$15,624 NZD
$8,661 USD
View
Price under review
19 more retailers have this diamond
Prices start from $1,851 NZDSave up to $6,967 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
3.21ct Heart
$1,851 NZD