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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 2235360307

Certificate GIA 2235360307

Diamond specifications and retailer prices

From $4,685 NZD
As of November 4, 2026
Save $5,496 NZD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,181 NZD at MOH London · As of November 4, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235360307. Listed at 12 retailers as of November 4, 2026, with prices from $4,685 to $10,181, a $5,496 spread on the same certified stone. MOH London lists it at $10,181. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235360307
Dimensions6.34 × 7.33 × 4.38 mm
L/W Ratio1.16
Culet sizeNone
Top View
6.34 mm7.33 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235360307
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.8%

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 4
Current: $10,181 NZD|Low: $4,685 NZD|High: $10,332 NZD|Avg: $6,417 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$4,685 NZD
Retailer 5$4,784 NZD
Retailer 8$5,650 NZD
Retailer 4$5,958 NZD
Retailer 2$6,229 NZD
Retailer 3$6,315 NZD
Retailer 7$6,573 NZD
MOH London$10,181 NZD

41 data points across 8 retailers

12 retailers$4,685 NZD to $10,181 NZD

B+
Cheapest Retailer
-
$4,685 NZD
B+
Retailer 2
-
$4,784 NZD
View
B+
Retailer 3
-
$4,890 NZD
View
B
Retailer 4
-
$5,650 NZD
View
B
Retailer 5
-
$5,958 NZD
View
B
Retailer 6
-
$6,007 NZD
View
B
Retailer 7
-
$6,229 NZD
View
B
Retailer 8
-
$6,278 NZD
View
B
Retailer 9
-
$6,278 NZD
View
B
Retailer 10
-
$6,315 NZD
View
B
Retailer 11
-
$6,494 NZD
View
Most Expensive
B
MOH London
FA2C9309B · Nov 4
$10,181 NZD
£4,444 GBP
View
11 more retailers have this diamond
Prices start from $4,685 NZDSave up to $5,496 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
$4,685 NZD