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Heart|Natural|GIA

1.50ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6551557845

Certificate GIA 6551557845

Diamond specifications and retailer prices

From $6,833 NZD
As of November 6, 2026
Save $2,510 NZD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $9,343 NZD at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded I 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 6551557845. Listed at 8 retailers as of November 6, 2026, with prices from $6,833 to $9,343, a $2,510 spread on the same certified stone. GemTrove lists it at $9,343. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551557845
Dimensions6.85 × 8.05 × 4.78 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.85 mm8.05 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551557845
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.5%

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: $6,922 NZD|Low: $6,231 NZD|High: $9,151 NZD|Avg: $7,552 NZD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$6,833 NZD
Retailer 1$6,922 NZD
Retailer 3$7,008 NZD
Retailer 7$7,131 NZD
Retailer 2$7,281 NZD
Retailer 6$7,295 NZD
Retailer 5$8,114 NZD

42 data points across 7 retailers

8 retailers$6,833 NZD to $9,343 NZD

A
Cheapest Retailer
-
$6,833 NZD
A
Retailer 2
-
$6,922 NZD
View
A
Retailer 3
-
$7,008 NZD
View
Final sale: no returns
A
Retailer 4
-
$7,131 NZD
View
A
Retailer 5
-
$7,281 NZD
View
A
Retailer 6
-
$7,295 NZD
View
B+
Retailer 7
-
$8,114 NZD
View
Most Expensive
B+
GemTrove
GT-N-01269805-98 · Nov 6
$9,343 NZD
A$7,968 AUD
View
7 more retailers have this diamond
Prices start from $6,833 NZDSave up to $2,510 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
1.50ct Heart
$6,833 NZD