Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 1523096178

Certificate GIA 1523096178

Diamond specifications and retailer prices

From $2,852 USD
As of November 2, 2026
11 retailers carry this diamond
Most expensive: $5,468 USD at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded I 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 1523096178. Listed at 11 retailers as of November 2, 2026. 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

1.20
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.37°
Pavilion angle38.71°
OriginNatural
Grading LabGIA
CertificateGIA 1523096178
Dimensions6.41 × 7.21 × 4.31 mm
L/W Ratio1.12
Culet sizeNone
Top View
6.41 mm7.21 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523096178
Side View
Table 59.0%Crown 38.37°Girdle: STK-VTKPavilion 38.71°Culet: NoneDepth 59.7%

Caratlytics Score

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B
Good
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Price History

Last verified: Nov 2
Current: $5,468 USD|Low: $1,823 USD|High: $5,468 USD|Avg: $3,104 USD
NZ Jewellers
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
October 26, 2026
Retailer 8$2,188 USD
Retailer 14$2,333 USD
Retailer 3$2,592 USD
Retailer 13$2,592 USD
Retailer 10$2,608 USD
Retailer 2$2,746 USD
Retailer 4$2,750 USD
Retailer 11$2,750 USD
Retailer 5$2,840 USD
Retailer 12$2,852 USD
Retailer 6$3,467 USD
Retailer 9$3,801 USD
Retailer 7$4,588 USD
NZ Jewellers$5,468 USD

29 data points across 14 retailers

11 retailers

Retailer 1
-
$2,333 USD
Price last confirmed 10 days ago
Retailer 2
-
$2,592 USD
View
Price last confirmed 15 days ago
Retailer 3
-
$2,608 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$2,746 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$2,750 USD
View
Price last confirmed 10 days ago
Retailer 6
-
$2,750 USD
View
Price last confirmed 10 days ago
Retailer 7
-
$2,840 USD
View
Price last confirmed 10 days ago
B
Retailer 8
-
$2,852 USD
View
Retailer 9
-
$3,801 USD
View
Price last confirmed 13 days ago
Retailer 10
-
$4,588 USD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
5f5739b3-e1c1-4141-afed-a6e930b66354 · Oct 24
$5,468 USD
View
Price last confirmed 12 days ago
10 more retailers have this diamond
Prices start from $2,852 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.

B
1.20ct Heart
$2,852 USD