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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7442234987

Certificate GIA 7442234987

Diamond specifications and retailer prices

From $3,732 NZD
As of November 6, 2026
Save $1,349 NZD (27%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,278 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded J 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 7442234987. Listed at 11 retailers as of November 6, 2026, with a 36% 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

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7442234987
Dimensions6.25 × 5.75 × 3.96 mm
L/W Ratio1.09
Top View
6.25 mm5.75 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7442234987
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,278 NZD|Low: $3,108 NZD|High: $7,326 NZD|Avg: $4,792 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$3,777 NZD
Retailer 7$4,008 NZD
Retailer 5$4,138 NZD
Retailer 8$4,140 NZD
Retailer 4$5,042 NZD
Retailer 3$5,082 NZD
Retailer 6$5,087 NZD
MOH London$7,278 NZD

45 data points across 8 retailers

11 retailers$3,732 NZD to $5,082 NZD

B+
Cheapest Retailer
-
$3,732 NZD
B+
Retailer 2
-
$3,777 NZD
View
Final sale: no returns
B+
Retailer 3
-
$4,008 NZD
View
B+
Retailer 4
-
$4,138 NZD
View
B
Retailer 5
-
$4,140 NZD
View
B
Retailer 6
-
$4,169 NZD
View
B
Retailer 7
-
$4,382 NZD
View
B
Retailer 8
-
$5,042 NZD
View
B
Retailer 9
-
$5,082 NZD
View
Retailer 10
-
$5,087 NZD
View
Price last confirmed 31 days ago
Most Expensive
MOH London
CFEA340F3 · Oct 29
$7,278 NZD
£3,177 GBP
View
Price last confirmed 9 days ago
10 more retailers have this diamond
Prices start from $3,732 NZDSave up to $1,349 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.

B+
1.20ct Heart
$3,732 NZD