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Heart|Natural|GIA

0.64ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 2536877635

Certificate GIA 2536877635

Diamond specifications and retailer prices

From $741 NZD
$417 USD
As of November 2, 2026
Save $231 NZD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $972 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.64ct natural heart diamond

This 0.64ct natural heart sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2536877635. Listed at 4 retailers as of October 31, 2026, with prices from $741 to $972, a $231 spread on the same certified stone. Blue Nile lists it at $972. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.64
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2536877635
Dimensions5.16 × 6.10 × 3.39 mm
L/W Ratio1.18
Top View
5.16 mm6.10 mm0.64 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2536877635
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: 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: Nov 2
Current: $972 NZD|Low: $693 NZD|High: $1,141 NZD|Avg: $886 NZD|-14.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 3$741 NZD
Retailer 4$802 NZD
Retailer 2$925 NZD
Blue Nile$972 NZD

40 data points across 4 retailers

4 retailers$741 NZD to $972 NZD

B+
Cheapest Retailer
-
$741 NZD
$417 USD
Final sale: no returns
A
Retailer 2
-
$802 NZD
SGD 610 SGD
View
B+
Retailer 3
-
$925 NZD
£410 GBP
View
Most Expensive
B+
Blue Nile
27287989 · Oct 31
$972 NZD
$547 USD
View
3 more retailers have this diamond
Prices start from $741 NZDSave up to $231 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
0.64ct Heart
$741 NZD