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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 5553605892

Certificate GIA 5553605892

Diamond specifications and retailer prices

From $7,596 NZD
$4,274 USD
As of October 31, 2026
Save $1,445 NZD (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $9,041 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two 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 5553605892. Listed at 7 retailers as of October 31, 2026, with prices from $7,596 to $9,041, a $1,445 spread on the same certified stone. Blue Nile lists it at $9,041. 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

1.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553605892
Dimensions6.82 × 8.12 × 4.51 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
6.82 mm8.12 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553605892
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 55.6%

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: Oct 31
Current: $9,041 NZD|Low: $6,933 NZD|High: $10,431 NZD|Avg: $8,474 NZD|-13.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5$7,596 NZD
Retailer 3$7,777 NZD
Retailer 4$7,856 NZD
Retailer 7$8,000 NZD
Retailer 2$8,106 NZD
Retailer 6$8,216 NZD
Blue Nile$9,041 NZD

42 data points across 7 retailers

7 retailers$7,596 NZD to $9,041 NZD

A
Cheapest Retailer
-
$7,596 NZD
$4,274 USD
A
Retailer 2
-
$7,777 NZD
₹416,746 INR
View
A
Retailer 3
-
$7,856 NZD
$4,420 USD
View
Final sale: no returns
A
Retailer 4
-
$8,000 NZD
MYR 18,336 MYR
View
A
Retailer 5
-
$8,106 NZD
£3,591 GBP
View
A
Retailer 6
-
$8,216 NZD
SGD 6,247 SGD
View
Most Expensive
A
Blue Nile
29530598 · Oct 31
$9,041 NZD
$5,087 USD
View
6 more retailers have this diamond
Prices start from $7,596 NZDSave up to $1,445 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
1.51ct Heart
$7,596 NZD