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Heart|Natural|GIA

1.20ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1232951516

Certificate GIA 1232951516

Diamond specifications and retailer prices

From $3,361 NZD
As of November 6, 2026
Save $2,028 NZD (38%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,388 NZD at MOH London · As of November 2, 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 I 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 1232951516. Listed at 6 retailers as of November 2, 2026, with prices from $3,361 to $5,388, a $2,028 spread on the same certified stone. MOH London lists it at $5,388. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.61°
OriginNatural
Grading LabGIA
CertificateGIA 1232951516
Dimensions6.71 × 7.36 × 4.02 mm
L/W Ratio1.10
Top View
6.71 mm7.36 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232951516
Side View
Table 57.0%Crown 37.61°Girdle: STK-THKPavilionCulet: NoneDepth 54.6%

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: $5,388 NZD|Low: $3,319 NZD|High: $6,426 NZD|Avg: $4,279 NZD|-15.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$3,361 NZD
Retailer 4$3,384 NZD
Retailer 3$3,411 NZD
Retailer 6$3,680 NZD
Retailer 2$4,176 NZD
MOH London$5,388 NZD

45 data points across 6 retailers

6 retailers$3,361 NZD to $5,388 NZD

A
Cheapest Retailer
-
$3,361 NZD
A
Retailer 2
-
$3,384 NZD
View
A
Retailer 3
-
$3,411 NZD
View
Retailer 4
-
$3,680 NZD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$4,176 NZD
View
Most Expensive
B+
MOH London
3375B755D · Nov 2
$5,388 NZD
£2,352 GBP
View
5 more retailers have this diamond
Prices start from $3,361 NZDSave up to $2,028 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.

A
1.20ct Heart
$3,361 NZD