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Heart|Natural|GIA

1.28ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1459480283

Certificate GIA 1459480283

Diamond specifications and retailer prices

From $10,098 NZD
As of November 4, 2026
Save $8,436 NZD (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $18,534 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.28ct natural heart diamond

This 1.28ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1459480283. Listed at 10 retailers as of November 4, 2026, with prices from $10,098 to $18,534, a $8,436 spread on the same certified stone. MOH London lists it at $18,534. 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

1.28
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1459480283
Dimensions7.08 × 6.17 × 4.06 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
7.08 mm6.17 mm1.28 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1459480283
Side View
Table 68.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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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: $18,534 NZD|Low: $9,703 NZD|High: $18,809 NZD|Avg: $14,014 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 6$11,644 NZD
Retailer 5$12,243 NZD
Retailer 2$13,049 NZD
Retailer 3$13,702 NZD
Retailer 4$15,391 NZD
MOH London$18,534 NZD

43 data points across 6 retailers

10 retailers$10,098 NZD to $18,534 NZD

B
Cheapest Retailer
-
$10,098 NZD
B
Retailer 2
-
$11,000 NZD
View
B
Retailer 3
-
$11,644 NZD
View
Final sale: no returns
B
Retailer 4
-
$11,680 NZD
View
Retailer 5
-
$12,243 NZD
View
Price last confirmed 16 days ago
B
Retailer 6
-
$12,903 NZD
View
B
Retailer 7
-
$13,049 NZD
View
B
Retailer 8
-
$13,702 NZD
View
B
Retailer 9
-
$15,391 NZD
View
Most Expensive
B
MOH London
60CB03D78 · Nov 4
$18,534 NZD
£8,090 GBP
View
9 more retailers have this diamond
Prices start from $10,098 NZDSave up to $8,436 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
1.28ct Heart
$10,098 NZD