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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 3415985694

Certificate GIA 3415985694

Diamond specifications and retailer prices

From $7,973 NZD
As of November 4, 2026
Save $4,337 NZD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,025 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 G 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 3415985694. Listed at 19 retailers as of November 4, 2026, with a 54% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3415985694
Dimensions5.88 × 5.67 × 4.12 mm
L/W Ratio1.04
Top View
5.88 mm5.67 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3415985694
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 72.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $16,025 NZD|Low: $8,036 NZD|High: $16,263 NZD|Avg: $10,828 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 8$8,036 NZD
Retailer 11$8,219 NZD
Retailer 12$8,435 NZD
Retailer 4$8,585 NZD
Retailer 10$9,140 NZD
Retailer 2$9,718 NZD
Retailer 5$9,788 NZD
Retailer 3$10,104 NZD
Retailer 6$11,354 NZD
Retailer 7$12,310 NZD
Retailer 9$14,536 NZD
MOH London$16,025 NZD

36 data points across 12 retailers

19 retailers$7,973 NZD to $12,310 NZD

B
Cheapest Retailer
-
$7,973 NZD
B
Retailer 2
-
$8,036 NZD
View
B
Retailer 3
-
$8,219 NZD
View
B
Retailer 4
-
$8,435 NZD
View
Final sale: no returns
B
Retailer 5
-
$8,585 NZD
View
B
Retailer 6
-
$8,596 NZD
View
B
Retailer 7
-
$9,052 NZD
View
Retailer 8
-
$9,140 NZD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$9,718 NZD
View
B
Retailer 10
-
$9,788 NZD
View
B
Retailer 11
-
$9,849 NZD
View
B
Retailer 12
-
$9,849 NZD
View
Retailer 13
-
$10,104 NZD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$10,174 NZD
View
Retailer 15
-
$11,132 NZD
View
Price last confirmed 23 days ago
B
Retailer 16
-
$11,354 NZD
View
B
Retailer 17
-
$12,310 NZD
View
Retailer 18
-
$14,536 NZD
View
Price last confirmed 10 days ago
Most Expensive
MOH London
8BE0C30AB · Nov 4
$16,025 NZD
£6,995 GBP
View
Price under review
18 more retailers have this diamond
Prices start from $7,973 NZDSave up to $4,337 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
$7,973 NZD