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Heart|Natural|GIA

1.60ct G SI1 Heart Natural Diamond

ID • G/SI1 • GIA 19

Certificate GIA 19

Diamond specifications and retailer prices

From $16,600 NZD
$9,340 USD
As of November 2, 2026
Save $4,344 NZD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $20,944 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.6ct natural heart diamond

This 1.6ct natural heart sits in the one-and-a-half to two 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. Listed at 3 retailers as of October 31, 2026, with prices from $16,600 to $20,944, a $4,344 spread on the same certified stone. Blue Nile lists it at $20,944. 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

1.60
Carat
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 19
Dimensions7.43 × 8.18 × 4.58 mm
L/W Ratio1.10
Top View
7.43 mm8.18 mm1.60 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 19
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 56.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $20,944 NZD|Low: $16,403 NZD|High: $20,944 NZD|Avg: $18,151 NZD
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2$16,600 NZD
Retailer 3$18,017 NZD
Blue Nile$20,944 NZD

4 data points across 3 retailers

3 retailers$16,600 NZD to $20,944 NZD

B
Cheapest Retailer
-
$16,600 NZD
$9,340 USD
B
Retailer 2
-
$18,017 NZD
$10,137 USD
View
Most Expensive
B
Blue Nile
16551253 · Oct 31
$20,944 NZD
$11,784 USD
View
2 more retailers have this diamond
Prices start from $16,600 NZDSave up to $4,344 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
1.60ct Heart
$16,600 NZD