CaratHunter
Plans
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 $1,026 USD
As of November 6, 2026
Save $3,862 USD (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,661 USD 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
Color
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: $8,661 USD|Low: $1,001 USD|High: $8,661 USD|Avg: $2,711 USD|+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$1,026 USD
Retailer 5$1,134 USD
Retailer 17$1,170 USD
Retailer 3$1,181 USD
Retailer 16$1,517 USD
Retailer 6$1,640 USD
Retailer 14$1,677 USD
Retailer 12$1,735 USD
Retailer 7$1,926 USD
Retailer 4$2,796 USD
Retailer 18$2,882 USD
Retailer 10$2,984 USD
Retailer 8$2,985 USD
Retailer 13$3,388 USD
Retailer 15$3,873 USD
Retailer 11$4,077 USD
Retailer 19$4,888 USD
Retailer 9$7,050 USD
Mervis Diamond Importers$8,661 USD

31 data points across 19 retailers

20 retailers$1,026 USD to $4,888 USD

Retailer 1
-
$1,012 USD
Price last confirmed 25 days ago
A
Retailer 2
-
$1,026 USD
View
Final sale: no returns
A
Retailer 3
-
$1,134 USD
View
A
Retailer 4
-
$1,170 USD
View
A
Retailer 5
-
$1,181 USD
View
Retailer 6
-
$1,517 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
$1,640 USD
View
B+
Retailer 8
-
$1,677 USD
View
B+
Retailer 9
-
$1,735 USD
View
B+
Retailer 10
-
$1,926 USD
View
B
Retailer 11
-
$2,796 USD
View
B
Retailer 12
-
$2,882 USD
View
B
Retailer 13
-
$2,984 USD
View
B
Retailer 14
-
$2,985 USD
View
B
Retailer 15
-
$3,388 USD
View
B
Retailer 16
-
$3,873 USD
View
B
Retailer 17
-
$4,077 USD
View
B
Retailer 18
-
$4,888 USD
View
Retailer 19
-
$7,050 USD
View
Price under review
Most Expensive
Mervis Diamond Importers
1958943385 · Nov 6
$8,661 USD
View
Price under review
19 more retailers have this diamond
Prices start from $1,026 USDSave up to $3,862 USD

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
$1,026 USD