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Heart|Natural|IGI

1.21ct I VS1 Heart Natural Diamond

VG • I/VS1 • IGI 683516178

Shape and cutting style on the report: Heart brilliant

Certificate IGI 683516178

Diamond specifications and retailer prices

From $2,372 USD
As of November 3, 2026
Save $1,373 USD (37%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,316 USD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 683516178. Listed at 13 retailers as of November 3, 2026, with a 58% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39°
OriginNatural
Grading LabIGI
CertificateIGI 683516178
Dimensions6.61 × 7.23 × 4.27 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Top View
6.61 mm7.23 mm1.21 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 683516178
Side View
Table 57.0%Crown 37.1°Girdle: STK-THKPavilion 39°Culet: NoneDepth 59.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $3,463 USD|Low: $2,368 USD|High: $5,165 USD|Avg: $3,337 USD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$2,372 USD
Retailer 7$2,816 USD
Retailer 3$2,911 USD
Retailer 9$3,051 USD
Retailer 8$3,169 USD
Retailer 1$3,463 USD
Retailer 5$3,682 USD
Retailer 2$3,745 USD
Retailer 6$5,130 USD

41 data points across 9 retailers

13 retailers$2,372 USD to $3,745 USD

A
Cheapest Retailer
-
$2,372 USD
Retailer 2
-
$2,732 USD
View
Price last confirmed 15 days ago
Retailer 3
-
$2,735 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$2,911 USD
View
Retailer 5
-
$3,051 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$3,051 USD
View
Price last confirmed 22 days ago
Retailer 7
-
$3,169 USD
View
Price last confirmed 16 days ago
B
Retailer 8
-
$3,463 USD
View
Retailer 9
-
$3,521 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$3,682 USD
View
Price last confirmed 16 days ago
B
Retailer 11
-
$3,745 USD
View
Retailer 12
-
$5,130 USD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
d1d1bda8-cf11-41e9-b759-90db111bdf7c · Oct 21
$5,316 USD
View
Price last confirmed 16 days ago
12 more retailers have this diamond
Prices start from $2,372 USDSave up to $1,373 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
1.21ct Heart
$2,372 USD